FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 2020

TRANSPORTADORA DE GAS DEL SUR S.A.

FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 2020

INDEX

01. ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS FOR THE NINE-MONTH PERIOD ENDED SEPTEMBER 30, 2020

02. CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS Statements of comprehensive income

Statements of financial position Statements of changes in equity Statements of cash flows

Notes to the condensed interim consolidated financial statements

03. INDEPENDENT AUDITORS´LIMITED REVIEW REPORT

Information required under sect. No. 1 of Chapter III - Title IV of the National Securities Commission Standards:

Exhibit A. Property, Plant and Equipment

Note 13 (interim consolidated financial statements)

Exhibit B. Intangible Assets

Not applicable.

Exhibit C. Investment in other companies

Note 10 (interim consolidated financial statements)

Exhibit D. Other Investments

Note 9.m (interim consolidated financial statements)

Exhibit E. Allowances

Note 9.b (interim consolidated financial statements)

Exhibit F. Cost of Sales

Note 9.i (interim consolidated financial statements)

Exhibit G. Assets and Liabilities in foreign

Note 18 (interim consolidated financial statements)

currency

Note 9.j (interim consolidated financial statements)

Exhibit H. Information required under

section 64, subsection i. B) of Law N 19,550

(Expenses Exhibit)

TRANSPORTADORA DE GAS DEL SUR S.A.

ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS FOR THE NINE-MONTH PERIOD ENDED SEPTEMBER 30, 2020 (1)

The following discussion of the financial condition and results of operations of the Company should be read in conjunction with the Company's consolidated financial statements as of September 30, 2020 and December 31, 2019, and for the nine-month periods ended September 30, 2020 and 2019. These condensed interim consolidated financial statements have been prepared in accordance with and complied with IAS 34 issued by the International Accounting Standards Board ("IASB") adopted by the Comisión Nacional de Valores ("CNV") through the provisions of Title IV, Chapter I, Section I, Article 1 - B.1 of the Rules of the CNV ("New Text 2013" or "NT 2013").

The condensed interim consolidated financial statements of the Company for the nine-month periods ended September 30, 2020, 2019 and 2018 have been subject to a limited review performed jointly by Price Waterhouse & Co. S.R.L. ("Price") and Pistrelli, Henry Martin and Asociados S.R.L.

Effects of inflation

On December 3, 2018, Law No. 27,468 was enacted, sanctioned on November 15, 2018 by the National Argentine Congress. Among other measures, this law abolishes Presidential Decree No. 1,269/02 -amended by Presidential Decree No. 664/2003 - through which the controlling entities (among them the CNV) had been instructed not to accept inflation adjusted financial statements. On December 28, 2018, the CNV issued Resolution No. 777/2018, by virtue of which it instructs companies that offer their shares to the public to apply the financial statements restatement method to a stable currency in line with the provisions of IAS 29 "Financial Reporting in Hyperinflationary Economies".

In accordance with such standards, the restatement of financial statements was restarted as from July 1, 2018. In line with the restatement method, non-currency assets and liabilities are restated by an overall price index issued by the Argentine Federation of Professional Councils in Economic Sciences ("Argentine Federation") since their acquisition date or last inflation adjustment (March 1, 2003).

Likewise, comparative information included in the financial statements has also been restated, but this fact has not modified the decisions based on the financial information corresponding to those fiscal years.

For further information, see "Note 4. Significant Accounting Policies - d) Restatement to constant currency - Comparative Information" to the consolidated financial statements as of December 31, 2019.

  1. Not covered by Auditor's Report on Review of Interim Financial Information, except for items 4, 5, 6 and
    8.

1

1. Results of operations

The following table presents a summary of the consolidated results of operations for the nine- month periods ended September 30, 2020 ("9M2020") and September 30, 2019 ("9M2019"):

2020

2019

Variation

(in millions of pesos)

%

Revenues

38,379

43,874

(5,495)

(13%)

Gas Transportation

16,541

21,430

(4,889)

(23%)

Natural Gas Liquids ("Liquids") production and

commercialization

18,678

19,939

(1,261)

(6%)

Other services(1)

3,160

2,505

655

26%

Cost of sales

(18,930)

(21,449)

2,519

(12%)

Operating costs

(15,057)

(18,242)

3,185

(17%)

Depreciation

(3,873)

(3,207)

(666)

21%

Gross profit

19,449

22,425

(2,976)

(13%)

Administrative and selling expenses

(3,395)

(3,912)

517

(13%)

Other operating results

68

(134)

202

(151%)

Operating profit

16,122

18,379

(2,257)

(12%)

Net financial results

(6,744)

(4,213)

(2,531)

60%

Share of profit / (loss) from associates

17

(21)

38

n/a

Income tax expense

(3,230)

(3,766)

536

(14%)

Total comprehensive income

6,165

10,379

(4,214)

(41%)

(1) Includes net revenues from Telecomunications and Midstream services.

Activities of the Company in 9M2020 and 9M2019

Revenues

Revenues for 9M2020 decreased by Ps. 5,495 million from the same period last year. This decrease is mainly due to the decrease in revenues of the Liquids Production and Commercialization business segment.

Natural Gas Transportation

During 9M2020 revenues from the Natural Gas Transportation business segment accounted for 43% of TGS' total net revenues (49% for 9M2019). 79% of the total revenues corresponded to firm contracted capacity services (82% for 9M2019).

Revenues from the Natural Gas Transportation segment during 9M2020 reached Ps. 16,541 million (Ps. 21,430 million in 9M2019). The decrease of Ps. 4,889 million is mainly due to the fact that the tariff rate increase granted by ENARGAS in April 2019 failed to offset the impact of inflation for the period between 9M2019 and 9M2020 on TGS' rates. This effect was partially offset by higher natural gas deliveries under interruptible and exchange and displacement contracts.

Liquids Production and Commercialization

During 9M2020, the Liquids Production and Commercialization business segment represented 49% of TGS´ total revenues (45% for 9M2019).

Revenues derived from the Liquid Production and Commercialization segment amounted to Ps. 18,678 million in 9M2020 (Ps 1,261 million lower than those recorded in 9M2019). This decrease is due to fall in prices due to the effect of COVID-19. This effect was partially offset by higher volumes sold and the effect of the increase in the exchange rate on revenues denominated in US dollars.

Total volumes dispatched, in total terms, increased by 149,688 short tons (19%) compared to 9M2019.

2

9M2020

9M2019

Variation

Local market

(in short tons)

%

Ethane

284,576

208,771

75,805

36%

Propane

190,938

192,506

(1,567)

(1%)

Butane

159,114

123,656

35,458

29%

Subtotal local market

634,628

524,933

109,695

21%

Foreign market

Propane

142,298

106,974

35,324

33%

Butane

66,741

75,387

(8,646)

(11%)

Natural Gasoline

106,594

93,280

13,314

14%

Subtotal foreign market

315,633

275,641

39,991

15%

Total

950,261

800,574

149,687

19%

The increase in the volumes dispatched is mainly due to the increase in deliveries of ethane after PBB Polisur SRL, the only customer to whom this product is commercialized, suffered in July 2019 technical problems in its facilities that prevented the normal supply of ethane Likewise, there was an increase in the volumes exported and in the butane sold in the local market assigned to the supply plans established by the Argentine Government.

The agreement regarding the commercialization of natural gasoline was successfully renewed. This agreement with Petrobras Global Trading B.V. will be extended for the period February 1, 2020 to January 31, 2021, and allows the Company to obtain improvements in the price.

Within the framework of the Households with Bottles Program by which butane is supplied to the local market, on October 19, 2020, the Secretary of Energy issued Resolution 30/2020 providing the increase of its price to Ps. 10,885 (10% increase over the current price as of September 30, 2020).

Other Services

Revenues derived from the Other Services segment increased Ps. 655 million in 9M2020 compared to the same period of 2019. This increase is due to higher revenues corresponding to transportation and conditioning services for natural gas in Vaca Muerta and the effect of the increase in the exchange rate on revenues denominated in US dollars. These effects were partially offset by lower construction services of the joint venture for the construction of a natural gas pipeline in the Province of Santa Fe ("UT SACDE - TGS") and natural gas compression and treatment services rendered.

Cost of sales and administrative and selling expenses

Cost of sales, administrative and selling expenses corresponding to 9M2020 decreased by Ps. 3,037 million, 12% compared to 9M2019. This variation is mainly due to the decrease in: (i) the cost of the natural gas processed in Cerri Complex (decrease in the price and quantities of natural gas purchased as Replacement of the Thermal Plant Reduction ("RTP"), (ii) in turnover tax and tax on exports, (iii) maintenance expenses and third party services and (iv) in labor costs. These effects were partially offset mainly by higher depreciations (due to the start-up of assets related to the provision of services in Vaca Muerta) and higher provisions for doubtful accounts.

Presidential Decree No. 488/2020 regulated the applicable tax rate on exports of certain oil and gas products, including those products that we export, establishing a range between 0% and 8% depending on the "ICE Brent first line" barrel price. If the mentioned price is below US$ 45 the rate will be zero. On the other hand, if the price is equal to or higher than US$ 60, an 8% rate will be paid, which will be variable if the price is between US$ 45 and US$ 60. Since this decree came into effect on May 19, 2020, the applicable export tax rate has been 0%.

The following table shows the main components of operating costs, administrative and commercialization expenses and comparisons for 9M2020 and 9M2019:

3

2020

2019

Variation

Concept

MM of $

% / Total

MM of $

% / Total

MM of $

% / Total

Natural Gas Purchase

8,984

41%

11,131

43%

(2,147)

(19%)

Labor costs

3,015

14%

3,390

13%

(375)

(11%)

Taxes, fees and contributions

2,181

10%

2,790

11%

(609)

(22%)

Repair and maintenance

1,197

5%

1,855

7%

(658)

(35%)

Other fees and third party services

1,993

9%

2,135

8%

(142)

(7%)

Depreciations

4,100

18%

3,348

13%

752

22%

Doubtful accounts

185

1%

-

0%

185

100%

Other charges

669

3%

712

3%

(43)

(6%)

Total

22,324

25,361

(3,037)

Other operating results

The other operating results recorded a positive variation of Ps. 202 million mainly as a result of the recognition of the collections received for insurance recovery and lower charges for provision for contingencies.

Net financial results

In 9M2020, the financial results showed a negative variation of Ps. 2,531 million with respect to 9M2019. The breakdown of net financial results is as follows:

9M2020

9M2019

(in millions of pesos)

Financial income

Interest income

351

686

Foreign exchange gain

2,850

8,933

Subtotal

3,201

9,619

Financial expenses

Interest expense

(2,252)

(2,298)

Foreign exchange loss

(9,937)

(17,373)

Less: capitalized finance costs

-

610

Subtotal

(12,189)

(19,061)

Other financial expenses

Acquisition of notes results

360

-

Derivative financial instruments result

284

260

Fair value (losses) / gains on financial instruments through profit or

loss

(2,426)

672

Other financial charges

(258)

(395)

Subtotal

(2,040)

537

Net monetary position

4,284

4,692

Total

(6,744)

(4,213)

The nominal exchange rate had a variation of Ps. 16.29 for each US dollar (27%) during 9M2020, as opposed to Ps. 19.89 for each US dollar (53%) during 9M2019.

2. Liquidity

The Company's primary sources and application of funds during 9M2020 and 9M2019 are shown in the table below:

4

2020

2019

Variation

(in millions of pesos)

Cash flows provided by operating activities

20,815

10,806

10,009

Cash flows used in investing activities

(20,447)

(25,183)

4,736

Cash flows used in financial activities

(4,371)

(13,983)

9,612

Net decrease in cash and cash equivalents

(4,003)

(28,360)

24,357

Cash and cash equivalents at the beginning of the year

11,996

31,454

(19,458)

Net monetary position

136

4,962

(4,826)

Foreign exchange gains on Cash and cash equivalents

(1,637)

(5,591)

3,954

Cash and cash equivalents at the end of the period

6,492

2,465

4,027

Net cash flow used in investing activities suffered a positive variation of Ps. 4,736 million mainly due to lower funds for the acquisition of capital goods after the completion of the works related to the midstream business in Vaca Muerta and as a consequence of the impact of COVID-19, partially offset by higher acquisitions of financial assets non considered cash and cash equivalents.

Regarding the net cash flow used in financing activities, it reduced by Ps. 9,612 million as a consequence of the dividend payment made in 9M2019. This effect was partially offset by the increase in: (i) the payments made for the acquisition of treasury shares, (ii) the cancellation of financial debts and (iii) the repurchase of our negotiable obligations.

On the other hand, the net cash flow provided by the operating activities showed an increase of Ps. 10,009 million, mainly derived from lower income tax payments, higher collections received from derivative financial instruments and improvements in the working capital.

3. Third quarter 2020 ("3Q2020") vs Third quarter 2019 ("3Q2019")

The following table presents a summary of the consolidated results of operations for 3Q2020 and 3Q2019:

2020

2019

Variation

(in millions of pesos)

%

Revenues

12,905

12,565

340

3%

Natural Gas transportation

4,994

7,067

(2,073)

(29%)

Liquids production and commercialization

6,821

4,509

2,312

51%

Other services (1)

1,090

989

101

10%

Cost of sales

(6,539)

(6,927)

388

(6%)

Operating costs

(5,203)

(5,805)

602

(10%)

Depreciation

(1,336)

(1,122)

(214)

19%

Gross profit

6,366

5,638

728

13%

Administrative and selling expenses

(892)

(1,157)

265

(23%)

Other expense, net

(24)

(39)

15

(38%)

Operating profit

5,450

4,442

1,008

23%

Share of profit from associates

3

25

(22)

(88%)

Net financial results

(4,232)

(5,085)

853

(17%)

Income tax expense

(830)

676

(1,506)

(223%)

Total comprehensive income

391

58

333

574%

(1) Includes net revenues of Telecommunication and Midstream segments.

During 3Q2020, total income amounted to Ps. 391 million, compared to Ps. 58 million for 3Q2019.

Total revenues increased Ps. 340 million in 3Q2020 compared to 3Q2019.

Revenues from the Natural Gas Transportation segment in 3Q2020 decreased by Ps. 2,073 million, compared to 3Q2019. The negative variation was due to the lack of tariff increase of the applicable tariffs (the last increase was on April 1, 2019) and the negative effect that the variation in the Consumer Price Index had on inflation-adjusted revenues.

Liquids revenues increased by Ps. 2,312 million in 3Q2020, mainly as a result of: (i) the

5

increase in the volume of ethane delivered compared to 3Q2019, after, as mentioned before, PBB was prevented to receive the normal supply of ethane, (ii) the higher volumes exported and (iii) the increase in the foreign exchange rate on sales denominated in US dollars. These were partially offset by the drop in prices.

Total volumes dispatched increased by 73%, or 150,396 short tons, resulting mainly from higher ethane volumes sold and propane and butane exported. The breakdown of volumes dispatched by market and product and revenues by market is included below:

9M2020

9M2019

Variation

Local market

(in short tons)

%

Ethane

111,356

6,996

104,360

1492%

Propane

81,859

84,679

(2,820)

(3%)

Butane

61,149

47,130

14,019

30%

Subtotal local market

254,364

138,805

115,559

83%

Foreign market

Propane

41,456

18,834

22,622

120%

Butane

31,138

20,592

10,546

51%

Natural Gasoline

29,761

28,092

1,669

6%

Subtotal foreign market

102,355

67,518

34,837

52%

Total

356,719

206,323

150,396

73%

The Other Services segment reported an increase of Ps. 101 million, mainly explained by higher natural gas transportation and conditioning services in Vaca Muerta and the increase in the foreign exchange rate on U.S. dollar-denominated revenues. These effects were partially offset by lower natural gas pipeline construction services provided through the TGS - SACDE joint venture and operation and maintenance services provided for natural gas pipelines and compression plants.

Cost of sales and administrative and commercialization expenses for 3Q2020 amounted to Ps. 7,431 million (compared to Ps. 8,084 million in 3Q2019), representing a decrease of Ps. 653 million. This variation is mainly due to the decline in: (i) repair and maintenance expenses of Property, Plant and Equipment, (ii) labor costs, (iii) turnover tax and export taxes and (iv) fees and services to third parties. These effects were partially offset by the increase in the costs of natural gas processed in the Cerri Complex, mainly due to the higher volumes of natural gas purchased.

The following table shows the main components of operating costs, administrative and commercialization expenses and their main variations for 3Q2020 and 3Q2019:

2020

2019

Variation

Concept

MM of $

% / Total

MM of $

% / Total

MM of $

% / Total

Natural Gas Purchase

3,440

47%

3,110

38%

330

11%

Labor costs

981

13%

1,173

15%

(192)

(16%)

Taxes, fees and contributions

618

8%

787

10%

(169)

(21%)

Repair and maintenance

181

2%

792

10%

(611)

(77%)

Other fees and third party services

636

9%

791

10%

(155)

(20%)

Depreciations

1,415

19%

1,172

14%

243

21%

Other charges

160

2%

259

3%

(99)

(38%)

Total

7,431

8,084

(653)

In 3Q2020, financial results were positive by Ps. 853 million compared to 2019. This positive variation is mainly due to the effect of the foreign exchange rate in 3Q2020. This effect was partially offset by the negative impact generated by financial assets and a lower positive effect on a net monetary position.

6

4. Consolidated Financial Position Summary

Summary of the consolidated financial position information as of September 30, 2020, December 31, 2019 and 2018:

09/30/2020

12/31/2019

12/31/2018

(in thousands of Argentine pesos)

Non-current assets

92,631,640

91,714,965

73,281,862

Current assets

27,370,446

25,722,864

43,771,623

Total assets

120,002,086

117,437,829

117,053,485

Shareholders´ equity

62,984,635

59,066,284

58,477,197

Minority interest

30

37

20

Total shareholders equity

62,984,665

59,066,321

58,477,217

Non-current liabilities

49,406,284

48,602,934

45,071,820

Current liabilities

7,611,137

9,768,574

13,504,448

Total liabilities

57,017,421

58,371,508

58,576,268

Total

120,002,086

117,437,829

117,053,485

5. Consolidated Comprehensive Income Summary

Summary of the consolidated comprehensive income information for the 9M2020, 9M2019 and 9M2018:

2020

2019

2018

(in thousands of Argentine pesos)

Operating profit

16,122,735

18,378,625

10,607,215

Net financial results

(6,743,708)

(4,213,471)

(3,211,659)

Share of gain / (loss) from associates

16,515

(21,167)

(3,706)

Net income before income tax

9,395,542

14,143,987

7,391,850

Income tax expense

(3,229,983)

(3,765,308)

(2,590,483)

Total comprehensive income for the period

6,165,559

10,378,679

4,801,367

Total comprehensive income attributable to:

Owners of the Company

6,165,550

10,378,665

4,801,362

Non-controlling interests

9

14

5

Total comprehensive income for the period

6,165,559

10,378,679

4,801,367

6. Consolidated Cash Flow Summary

Summary of the consolidated cash flow information for 9M2020, 9M2019 and 9M2018:

2020

2019

2018

(in thousands of Argentine Pesos)

Cash flows provided by operating activities

20,814,647

10,805,713

5,679,950

Cash flows used in investing activities

(20,447,156)

(25,183,270)

(10,423,778)

Cash flows used in financial activities

(4,371,182)

(13,983,299)

12,452,804

Net decrease in cash and cash equivalents

(4,003,691)

(28,360,856)

7,708,976

Cash and cash equivalents at the beginning of the year

11,995,692

31,453,662

6,848,038

Foreign exchange gains on Cash and cash equivalents

136,394

4,963,611

6,743,839

Loss on the monetary position on Cash and cash equivalents

(1,636,441)

(5,591,183)

(1,814,196)

Cash and cash equivalents at the end of the period

6,491,954

2,465,234

19,486,657

7

7. Statistical Data (Physical units)

Nine-month period ended September 30,

Third quarter ended September 30,

Gas Transportation

2020

2019

2018

2017

2016

2020

2019

2018

2017

2016

Average firm contracted capacity (in

billions of cubic feet per day ("Bcf/d"))

2.92

2.92

2.88

2.78

2.78

2.92

2.92

2.90

2.79

2.77

Average daily deliveries (in Bcf/d)

2.29

2.40

2.57

2.45

2.44

2.59

2.64

2.87

2.66

2.70

NGL production and commercialization

Production

Ethane (in short tones)

284,576

208,771

310,221

225,418

225,886

111,356

6,996

66,905

60,210

77,767

Propane (in short tones)

330,858

296,964

251,097

257,570

253,206

109,052

98,282

75,866

73,633

76,421

Butane (in short tones)

229,833

202,992

182,843

130,429

177,110

73,777

64,844

53,345

19,489

54,839

Natural Gasoline (in short tones)

103,802

97,755

99,240

87,422

77,387

31,388

29,694

25,781

24,915

23,144

• Local market sales (a)

Ethane (in short tones)

284,576

208,771

310,221

225,418

225,886

111,356

6,996

66,905

60,210

77,767

Propane (in short tones)

190,938

192,506

142,858

159,352

152,201

81,859

84,679

56,374

51,841

53,254

Butane (in short tones)

159,114

123,656

135,189

120,039

120,855

61,149

47,130

52,002

57,929

50,693

Exports (a)

Propane (in short tones)

142,299

106,974

106,545

88,848

94,458

41,456

18,834

39,673

5,841

23,298

Butane (in short tones)

66,741

75,387

56,547

55,534

38,268

31,138

20,592

12,812

7,170

-

Natural Gasoline (in short tones)

106,595

93,280

95,354

85,585

71,718

29,761

28,092

26,441

22,678

16,401

(a) Includes natural gas processed on behalf of third parties.

8. Comparative Ratios

09/30/2020

12/31/2019

12/31/2018

Liquidity (Current assets to current liabilities)

3.60

2.63

3.24

Shareholders´ equity to total liabilities

1.10

1.01

1.00

Non-current assets to total assets

0.77

0.78

0.63

9. TGS share market value in Buenos Aires Stock Exchange at closing of last business day (in Argentine Pesos per share)

2020

2019

2018

2017

2016

January

104.30

125.85

90.05

32.40

17.00

February

93.15

114.50

83.50

36.80

21.00

March

72.15

114.10

81.75

43.90

17.30

April

101.80

90.40

78.05

46.30

18.00

May

121.50

116.35

84.30

53.30

18.00

June

114.10

124.50

69.15

56.40

19.90

July

141.35

137.20

90.95

54.00

19.55

August

123.85

94.45

98.40

61.30

18.25

September

116.60

107.10

120.05

72.00

20.80

October

152.95

121.00

103.95

76.00

22.40

November

91.70

117.00

73.85

25.60

December

108.65

111.00

83.00

29.60

10.Outlook

The outbreak and spread of the virus called "Coronavirus" (or "Covid-19") has determined that the current global and macroeconomic context poses a scenario of important challenges in which we will have to develop our businesses. Given the magnitude of the spread of the virus, in March 2020, several governments around the world implemented drastic measures to contain the spread, including, among others, the closure of borders and the prohibition of travel to and from certain parts of the world for a period of time and finally the compulsory isolation of the population along with the cessation of non-essential commercial activities.

This brought about relevant consequences, including a significant economic contraction whose impact and scope are still unknown. Despite the fact that in several countries of the European continent, confinement measures are being taken again, initially for a one-month period, due to the sustained increase in contagions, the main focus of the pandemic is still located in the American continent, where the level of contagion continues elevated.

8

In Argentina, we are currently in a situation of social, preventive and compulsory isolation, established since March 20, 2020 by Presidential Decree No. 297/2020. Although with certain flexibilities, this measure is currently extended until November 8, 2020.

By this reason, at TGS we have complied with all the measures issued by the National Health Authority. Despite the isolation measures and the severe restrictions to movement, we maintain our operations because they are considered essential, preserving the health of all our collaborators. The impact of the COVID-19 brought about a greater deterioration in the main social and macroeconomic variables of Argentina, which led the National Government to adopt a series of measures to meet the needs of the most vulnerable sectors and those with the greatest impact.

The deterioration in the collections of the Natural Gas Transportation segment, the abrupt drop in the international prices of Liquids mentioned above, and the fragility of the energy sector in Argentina mean that we must adopt a series of measures aimed at generating efficient management of the resources.

Firstly, it is important to remember that at TGS we provide an essential service to the country that cannot be interrupted, whose equipment and facilities require the assistance of our maintenance teams, in compliance with protocols regarding transportation and works at the facilities. Even though during the winter demand grew and the transportation system became extremely rigid, we maintained the reliability of our system.

In this framework, we will be attentive to the talks with the national authorities in order to comply with the provisions of the Solidarity Law regarding the concretion of the new RTI process that allows us to receive tariff increases according to the quality of the service we provide. This will imply that we must develop a constructive dialogue with each of the valid interlocutors.

In the Liquids Production and Commercialization segment, the lack of agreement by the member countries of the Organization of Petroleum Exporting Countries ("OPEC") and the non- OPEC producers ("OPEC+") regarding the levels of oil production generated an unusual volatility and uncertainty in the energy market that together with the impact of COVID-19 caused an abrupt fall in the price of the Liquids that we commercialize and caused a framework of uncertainty in the energy development of Argentina as it was previously stated.

In this sense, the strategy will be aimed at optimizing the production mix that allows prioritizing those products and distribution channels that provide higher margins. For this, it will be very important to be efficient in the management of our assets, ensuring a coordinated, safe and efficient operation.

In the Other Services segment, we have to face an even more challenging framework, once the works for the collector natural gas pipeline and conditioning plant in Vaca Muerta are concluded, we will have to continue developing profitable businesses in a context that, as given, will not be favorable.

In financial terms, and given the aforementioned facts, we have made the necessary budgetary adjustments in order to preserve our financial position, make a prudent allocation of our resources, and mitigate the negative impact that the main macroeconomic variables have on our businesses and the delays in granting the tariff increases that affect our financial situation.

The impact of COVID-19 on financial markets has negatively affected the cost of loans, hedging activities and access to capital markets in general, which could limit our ability to obtain coverage or financing in a timely manner and in acceptable terms. Furthermore, the fragile economic environment in Argentina was intensified by the slowdown in economic activity caused by COVID-19 and other internal factors that may lead to an increase in the bad debt rates of our clients and their counterparts. Given our current lack of access to financial markets, we believe that we will have to rely solely on the cash flows generated by our operations to meet our working capital, debt service, and capital expenditures requirements for the foreseeable future.

As regards their daily operations, TGS will remain committed to continuous improvement of each of its processes to optimize the use of the resources and to reduce operating costs. To

9

this end, the Company will carry out actions aimed at the reduction of cost without affecting the reliability and availability of the pipeline system. We will continue with the implementation of various actions, such as the standardization and systematization of risk management in pipelines, compressor stations and processing facilities. Finally, we will deepen training initiatives for the staff for technical and management training resources.

Autonomous City of Buenos Aires, November 6, 2020

Horacio Turri

Chairman of the Board of Directors

10

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

CONDENSED INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME FOR THE THREE AND NINE-MONTH PERIODS ENDED SEPTEMBER 30, 2020 AND 2019

(Stated in thousands of pesos as described in Note 3 except for basic and diluted earnings per share)

For the three-month periods

For the nine-month periods

ended September 30,

ended September 30,

Notes

2020

2019

2020

2019

Revenues

9.h.

12,905,214

12,565,140

38,379,227

43,874,371

Cost of sales

9.i

(6,538,951)

(6,926,642)

(18,929,841)

(21,448,808)

Gross profit

6,366,263

5,638,498

19,449,386

22,425,563

Administrative expenses

9.j.

(359,013)

(382,671)

(1,121,037)

(1,146,219)

Selling expenses

9.j.

(531,661)

(775,607)

(2,273,163)

(2,766,633)

Other operating results

9.l.

(23,545)

(38,702)

67,549

(134,086)

Operating profit

5,452,044

4,441,518

16,122,735

18,378,625

Net financial results

Financial income

9.k.

1,117,556

5,469,873

3,201,418

9,619,506

Financial expenses

9.k.

(4,070,044)

(13,441,592)

(12,188,722)

(19,061,086)

Other financial results

9.k.

(2,867,881)

271,107

(2,039,941)

537,856

Gain on net monetary position

9.k.

1,588,520

2,613,364

4,283,537

4,690,253

Total net financial results

(4,231,849)

(5,087,248)

(6,743,708)

(4,213,471)

Share of gain / (loss) from associates

12

2,004

25,160

16,515

(21,167)

Net income before income tax

1,222,199

(620,570)

9,395,542

14,143,987

Income tax

15

(831,201)

676,693

(3,229,983)

(3,765,308)

Net income for the period

390,998

56,123

6,165,559

10,378,679

Other comprehensive results

-

-

-

-

Total comprehensive income for the period

390,998

56,123

6,165,559

10,378,679

Net income and total comprehensive income attributable to:

Owners of the Company

390,997

56,122

6,165,550

10,378,665

Non-controlling interests

1

1

9

14

390,998

56,123

6,165,559

10,378,679

Total comprehensive income per share attributable to

owners of the Company:

Weighted average of outstanding ordinary shares*

759,616,486

770,407,256

765,727,993

783,583,777

Basic and diluted earnings per share

0.51

0.07

8.05

13.25

*The weighted average of the number of shares considers the effect of the weighted average of the changes originated in the transactions with treasury shares made during the year.

The accompanying notes are an integral part of these consolidated financial statements.

Horacio Turri

Chairman of the Board of Directors

1

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

CONDENSED INTERIM CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

AS OF SEPTEMBER 30, 2020 AND DECEMBER 31, 2019 (Stated in thousands of pesos as described in Note 3

ASSETS

Notes

09/30/2020

12/31/2019

Non-current assets

Property, plant and equipment

13

92,472,755

91,581,477

Investments in associates

10

113,138

96,627

Other financial assets at amortized cost

9.m.

17,662

6,637

Deferred tax assets

15

18,861

19,163

Other receivables

9.a.

9,224

11,061

Total non-current assets

92,631,640

91,714,965

Current assets

Other receivables

9.a.

1,808,837

3,560,033

Inventories

338,775

377,909

Trade receivables

9.b.

5,797,881

7,952,444

Contract assets

73,429

217,759

Derivative financial instruments

-

336,614

Other financial assets at amortized cost

9.m.

8,359,183

1,282,413

Other financial assets at fair value through profit or loss

9.n.

4,500,387

-

Cash and cash equivalents

9.c.

6,491,954

11,995,692

Total current assets

27,370,446

25,722,864

Total assets

120,002,086

117,437,829

EQUITY

Common stock

33,612,023

34,825,314

Treasury shares

1,662,994

449,703

Cost of acquisition of treasury shares

(3,144,878)

(897,679)

Additional paid-up capital

(972,549)

(972,549)

Legal reserve

3,148,052

2,361,554

Reserve for capital expenditures, acquisition of treasury

shares and/or dividends

22,513,443

6,573,386

Accumulated retained earnings

6,165,550

16,726,555

Non-controlling interests

30

37

Total equity

62,984,665

59,066,321

LIABILITES

Non-current liabilities

Deferred tax liabilities

15

6,674,198

5,869,493

Contract liabilities

9.d.

3,781,279

3,595,349

Loans

14

38,950,807

39,138,092

Total non-current liabilities

49,406,284

48,602,934

Current liabilities

Provisions

16

775,723

723,680

Contract liabilities

9.d.

288,576

270,006

Other payables

9.e.

317,495

353,364

Taxes payables

9.f.

298,337

433,854

Income tax payable

1,099,515

22,516

Payroll and social security taxes payable

9.o.

692,163

796,560

Loans

14

1,460,681

2,115,433

Trade payables

9.g.

2,678,647

5,053,161

Total current liabilities

7,611,137

9,768,574

Total liabilities

57,017,421

58,371,508

Total equity and liabilities

120,002,086

117,437,829

The accompanying notes are an integral part of these consolidated financial statements.

Horacio Turri

Chairman of the Board of Directors

2

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

CONDENSED INTERIM CONSOLIDATED STATEMENT OF CHANGES IN EQUITY FOR THE NINE-MONTH PERIODS ENDED SEPTEMBER 30, 2020 AND 2019 (Stated in thousands of pesos as described in Note 3)

______________________________________________________________________________________________________________________________________________________________________________

Capital

Retained Earnings

Outstanding shares

Treasury shares

Reserve for

Inflation

Inflation

capital expenditures,

adjustment

adjustment

Acquisition cost

Trading

Future

Future capital

acquisition of

Common

to common

Common

to common

of treasury

premium of

dividends

expenditures

treasury shares

Accumulated

Non-Controlling

stock

stock

stock (1 )

stock(1 )

shares (1 )

treasury shares

Subtotal

Legal reserve

reserve

reserve

and/or dividends

retained earnings

Subtotal

Total

interests

Total

Balances at December 31, 2018

780,894

33,890,256

13,601

590,266

(2,685,118)

-

32,589,899

1,228,719

1,873,874

131,998

-

22,652,707

25,887,298

58,477,197

20

58,477,217

Resolutions of the Ordinary Shareholders´

Meeting held on April 11, 2019

Legal Reserve

-

-

-

-

-

-

-

1,132,835

-

-

-

(1,132,835)

-

-

-

-

Dividends payment

-

-

-

-

-

-

-

-

-

-

-

(11,284,583)

(11,284,583)

(11,284,583)

-

(11,284,583)

Reserve for capital expenditures, acquisition of

treasury shares and/or dividends

-

-

-

-

-

-

-

-

-

-

11,245,125

(11,245,125)

-

-

-

-

Derecognition of reserves

-

-

-

-

-

-

-

-

(1,873,874)

(131,998)

-

2,005,872

-

-

-

-

Dividends payment

-

-

-

-

-

-

-

-

-

-

(390,963)

-

(390,963)

(390,963)

-

(390,963)

Treasury shares purchase

(15,844)

(218,362)

15,844

218,362

(2,284,717)

-

(2,284,717)

-

-

-

-

-

-

(2,284,717)

-

(2,284,717)

Comprehensive income for the nine-month period

-

-

-

-

-

-

-

-

-

-

-

10,378,665

10,378,665

10,378,665

14

10,378,679

Balances at September 30, 2019

765,050

33,671,894

29,445

808,628

(4,969,835)

-

30,305,182

2,361,554

-

-

10,854,162

11,374,701

24,590,417

54,895,599

34

54,895,633

Treasury shares distribution

29,445

1,064,095

(29,445)

(1,064,095)

4,969,835

(972,549)

3,997,286

-

-

-

(3,965,317)

-

(3,965,317)

31,969

-

31,969

-

Dividends payment

-

-

-

-

-

-

-

-

-

-

(315,459)

-

(315,459)

(315,459)

-

(315,459)

Treasury shares purchase

(9,887)

(695,283)

9,887

695,283

(897,679)

-

(897,679)

-

-

-

-

-

-

(897,679)

-

(897,679)

Comprehensive income for the three-month period

-

-

-

-

-

-

-

-

-

-

-

5,351,854

5,351,854

5,351,854

3

5,351,857

Balances at December 31, 2019

784,608

34,040,706

9,887

439,816

(897,679)

(972,549)

33,404,789

2,361,554

-

-

6,573,386

16,726,555

25,661,495

59,066,284

37

59,066,321

Treasury shares purchase

(28,998)

(1,184,293)

28,998

1,184,293

(2,247,199)

-

(2,247,199)

-

-

-

-

-

-

(2,247,199)

-

(2,247,199)

Resolutions of the Ordinary Shareholders´

Meeting held on April 21, 2020

Legal Reserve

-

-

-

-

-

-

-

786,498

-

-

-

(786,498)

-

-

-

-

Reserve for capital expenditures, acquisition of

treasury shares and/or dividends

-

-

-

-

-

-

-

-

-

-

22,513,441

(22,513,441)

-

-

-

-

Derecognition of reserves

-

-

-

-

-

-

-

-

-

-

(6,573,384)

6,573,384

-

-

-

-

Non-Controlling interests dividends payment

-

-

-

-

-

-

-

-

-

-

-

-

-

(16)

(16)

Comprehensive income for the nine-month period

-

-

-

-

-

-

-

-

-

-

-

6,165,550

6,165,550

6,165,550

9

6,165,559

Balances at September 30, 2020

755,610

32,856,413

38,885

1,624,109

(3,144,878)

(972,549)

31,157,590

3,148,052

-

-

22,513,443

6,165,550

31,827,045

62,984,635

30

62,984,665

(1 ) Corresponds to 38,885,213 shares of par value Ps. 1 each, equivalent to 4.89% of the share capital. The acquisition cost of these shares amounted to Ps. 3,144,878. See Note 20.

The accompanying notes are an integral part of these consolidated financial statements.

Horacio Turri

Chairman of the Board of Directors

3

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS FOR THE NINE-MONTH PERIODS ENDED SEPTEMBER 30, 2020 AND 2019 (Stated in thousands of pesos as described in Note 3)

_____________________________________________________________________________________________________

CASH FLOWS PROVIDED BY OPERATING ACTIVITIES

2020

2019

Total comprehensive income for the period

6,165,559

10,378,679

Reconciliation of total comprehensive income to cash flows provided by operating activities:

Depreciation of property, plant and equipment

4,100,265

3,348,444

Derivative financial instrument results

(284,026)

(260,159)

Disposal of property, plant and equipment

20,007

129,216

Share of (gain) / loss from associates

(16,515)

21,167

Increase in provisions

203,770

263,158

Interest expense accrual

2,172,064

1,530,598

Interest loss on other financial assets other than cash and cash equivalents

3,050,702

(82,111)

Income tax

3,229,983

3,765,308

Acquisition of notes result

(360,344)

-

Foreign exchange loss

7,846,257

9,397,585

Allowance for doubtful accounts

184,763

-

Gain on the net monetary position

(4,371,761)

(5,360,116)

Changes in assets and liabilities:

Trade receivables

229,380

(3,274,597)

Other receivables

(305,613)

(2,210,616)

Inventories

(31,135)

(584,925)

Trade payables

(75,286)

(561,237)

Contract assets

103,840

(13,169)

Payroll and social security taxes

43,712

207,260

Tax payables

(44,074)

(303,148)

Other payables

29,836

221,542

Provisions

(446)

(37)

Interest paid

(1,239,871)

(1,218,948)

Derivative financial instruments payment

597,000

-

Income tax paid

(638,368)

(5,244,359)

Contract liabilities

204,948

656,178

Cash flows provided by operating activities

20,814,647

10,805,713

CASH FLOWS USED IN INVESTING ACTIVITIES

Additions to property, plant and equipment

(5,882,086)

(14,556,178)

Financial assets not considered cash equivalents

(14,565,070)

(10,627,092)

Cash flows used in investing activities

(20,447,156)

(25,183,270)

CASH FLOWS USED IN FINANCING ACTIVITIES

Payment of loans

(1,221,825)

(23,035)

Cost of acquisition of treasury shares

(2,247,199)

(2,284,717)

Dividends paid

(19)

(11,675,547)

Cost of acquisition of Notes

(902,139)

-

Cash flows used in financing activities

(4,371,182)

(13,983,299)

NET DECREASE IN CASH AND CASH EQUIVALENTS

(4,003,691)

(28,360,856)

Cash and cash equivalents at the beginning of the year

11,995,692

31,453,662

Foreign exchange gain on Cash and cash equivalents

136,394

4,963,611

Loss on the monetary position on Cash and cash equivalents

(1,636,441)

(5,591,183)

Cash and cash equivalents at the end of the period

6,491,954

2,465,234

The accompanying notes are an integral part of these consolidated financial statements.

For further information, see Note 7.

Horacio Turri

Chairman of the Board of Directors

4

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

1. GENERAL INFORMATION Business Overview

Transportadora de Gas del Sur S.A. ("TGS" or the "Company") is one of the companies created as a result of the privatization of Gas del Estado S.E. ("GdE"). TGS commenced operations on December 29, 1992 and it is mainly engaged in the Transportation of Natural Gas, and Production and Commercialization of natural gas Liquids ("Liquids"). TGS's pipeline system connects major natural gas fields in southern and western Argentina with natural gas distributors and industries in those areas and in the greater Buenos Aires area. The natural gas transportation license to operate this system was exclusively granted to TGS for a period of thirty-five years ("the License"). TGS is entitled to a one-time extension of ten years provided that it has essentially met the obligations imposed by the License and by the Ente Nacional Regulador del Gas (National Gas Regulatory Body or "ENARGAS"). The General Cerri Gas Processing Complex (the "Cerri Complex"), where TGS processes natural gas to obtain liquids, was transferred from GdE along with the gas transmission assets. TGS also provides midstream services, which mainly consist of gas treatment, removal of impurities from the natural gas stream, gas compression, wellhead gas gathering and pipeline construction, operation and maintenance services. In addition, telecommunications services are provided through the subsidiary Telcosur S.A. ("Telcosur"). These services consist of data transmission services through a network of terrestrial and digital radio relay.

Subsequently, the corporate purpose of the Company was modified in order to incorporate the development of complementary activities, incidental, linked and / or derived from natural gas transportation, such as the generation and commercialization of electric power and the provision of other services for the hydrocarbon sector in general.

Major Shareholders

TGS's controlling shareholder is Compañía de Inversiones de Energía S.A. ("CIESA"), which holds 51% of the common stock. Local and foreign investors hold the remaining ownership of TGS's common stock. CIESA is under joint control and in equal parts of: (i) Pampa Energía S.A. ("Pampa Energía") with 50%; (ii) Grupo Inversor Petroquímica S.L. (member of the GIP Group, led by the Sielecki family) and PCT L.L.C. with the remaining 50%.

The following table shows the organizational structure, shareholders and related parties of TGS as of September 30, 2020:

5

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

Detailed data reflecting subsidiary control as of September 30, 2020 is as follows:

Company

Incorporation

Closing date

Main activity

country

Telcosur

Argentina

December 31

Telecommunication

Services

CTG

Argentina

December 31

Electrical power

related services

Economic context and Impact of COVID-19 ("COVID") on TGS operations

The Company operates in an economic context whose main variables have recently had a strong volatility as a consequence of political and economic events both domestically and internationally.

As of 2020, the spread of COVID has impacted a large number of countries with a significant level of severity. In March 2020, the World Health Organization (WHO) declared Covid-19 a global pandemic. During this period, countries, organizations, and TGS have taken considerable steps to mitigate the risk to communities, employees, and business operations.

6

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

During this period, the countries implemented a series of drastic measures including, among others, closing borders and mandatory isolation of the population, paralyzing non-essential economic activity and causing a marked global economic recession. This resulted in similar measures being adopted by organizations and TGS to mitigate risk to communities, employees and business operations.

While, between the months of May and August 2020, a gradual process of deconfinement developed in the European continent, as in several countries in Asia and Oceania, the main focus of the pandemic was located in the American continent, where the level of contagions grew steadily. However, since mid-September, the numbers of contagions have increased in the European continent, leading countries to restart with certain measures that imply a retraction of the economy and an increase in volatility as a result of the uncertainty regarding the health situation. Meanwhile, the American continent has maintained a high level of contagions.

In particular, the Argentine Government implemented a series of measures aimed at reducing the circulation of the population, providing for preventive and compulsory social isolation since March 20, 2020, allowing circulation only of those people linked to the provision / production of essential services and products. This isolation will be extendable for the time considered necessary in light of the epidemiological situation. Currently, by means of Presidential Decree No. 814/2020 it is extended until November 8, 2020.

The Argentine economy was in a recessive process and the emergence of the pandemic in March 2020 made this scenario even more complex. In this sense, and as in other countries, the Argentine government has implemented a series of economic measures in order to mitigate the impact on the most vulnerable sectors and to sustain the economy.

The Company's Management has implemented measures with the objective of ensuring the health of its employees, maintaining the continuity of its operations, and preserving its financial situation.

The main macroeconomic issues of our country are:

  • The Emerging Markets Bonds Index or EMBI as of September 30, 2020 amounted to 1,300 points.
  • Accumulated inflation between January 1, 2020 and September 30, 2020 reached 22.3% (Consumer Price Index - "CPI").
  • Between January 1 and September 30, 2020, the Argentine Peso depreciated 27% against the US dollar, according to the exchange rate of the Banco de la Nación Argentina ("BNA"). Likewise, as of September 30, 2020, the gap with respect to the alternative prices of the US dollar that are obtained in the market was close to approximately 91%.
  • The Central Bank of the Argentine Republic ("BCRA" for its acronym in Spanish) tightened exchange restrictions (for more information see "Note 5 - Financial Risk Management"), which also affect the value of foreign currency in existing alternative markets.

Although the activities carried out by the Company are considered essential, the situations described above have had an impact on the different business segments in which it operates.

In the Natural Gas Transportation segment, the Argentine Government through Presidential Decree No. 311/2020 (the "Decree 311") provided for the suspension of public service outages for lack of payment for a period of 180 days, subsequently extended for a similar period, and the implementation of various measures aimed at sustaining the income of those sectors of the economy that suffer the greatest impact. Both the above mentioned and the isolation measures have involved certain delays in the receipt of collections related to this business segment which, although it has improved recently, cannot ensure that this situation is maintained over time. For more information regarding the Company's rate situation, see

7

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

"Note 19 - Regulatory Framework - Regulatory Framework of the Natural Gas Transportation segment."

In the Liquids Production and Commercialization segment, during the first nine months of 2020, and particularly during the third quarter of the year, the international reference prices of the liquids produced and commercialized by the Company were impacted after, added to the negative impact of the development of the COVID on the world-wide supply and demand of products, the member countries of the Organization of the Petroleum Exporting Countries ("OPEC") and the non-OPEC producers ("OPEC+") have not reached an agreement on oil production levels, all of which has generated a scenario of high volatility. Also, in the domestic market, the price of natural gas at wellheads during the third quarter was approximately 40% lower than the same period in 2019. As for natural gas production, in the same period, production recorded a 11% year-on-year fall, due to the effects limitations of preventive and mandatory social isolation on activity, combined with a higher autumn temperature. In this context, the National Government is evaluating the implementation of a new program to promote natural gas production and sustain the industry.

As for the Other Services segment, in the third quarter of 2020 the production and price of natural gas at wellheads in the Neuquina basin maintained the trend described at the national level. This decrease, added to the macroeconomic situation in Argentina, continue to generate uncertainty regarding the development of natural gas in the Vaca Muerta area.

At the date of issuance of these Condensed Interim Consolidated Financial Statements, it is not possible to foresee the impact or the duration of said situation of volatility and uncertainty, nor the effect that the measures adopted and those that may be adopted in the future may have, but they could negatively affect the results, financial situation and cash flows. However, given the Company's financial situation, the above-mentioned events are not currently expected to affect the continuity of the business, and it is therefore estimated that the Company will be able to continue to meet its financial commitments in the near future.

In this regard, the Company evaluated that as of September 30, 2020, there were no indicators of impairment in addition to those identified at March 31, 2020 in accordance with IAS 36, date at which the impairment tests have been performed on the assets included within Property, Plant and Equipment ("PPE"). The disclosures relating to the test performed and its result are included in Note 6 to these Consolidated Condensed Interim Financial Statements.

The Company's Management permanently monitors the evolution of the situations that affect its business, to determine the possible actions to be taken and to identify the possible impacts on its financial situation and the results of its operations. The Company's financial statements must be read considering all these circumstances.

2. CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

TGS presents its condensed interim consolidated financial statements for the nine-month periods ended September 30, 2020 and 2019 in accordance with Title IV, Chapter I, Section I, article 1.b.1 of CNV´s regulations requiring the use of International Accounting Standard 34 ("IAS 34") issued by the International Accounting Standards Board ("IASB") adopted by the CNV through NT 2013 (the "Rules").

In these condensed interim consolidated financial statements, TGS and its consolidated subsidiaries (Telcosur and CTG Energía S.A.U. ("CTG")), are jointly referred to as "TGS" or "the Company".

These interim condensed consolidated financial statements, which were approved and authorized for issuance by the Board of Directors on November 6, 2020, do not include all

8

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

the information and disclosures required for annual financial statements, and should be read in conjunction with TGS' annual financial statements as of December 31, 2019, issued on March 6, 2020.

Derived from the measures taken to ensure the health of its personnel by COVID, the Company has been prevented from transcribing in the rubricated accounting books: (i) the transactions corresponding to the months of January to September 2020 in its Journal Entries book, and (ii) the present condensed interim financial statements in its Inventory and Financial statements book.

3. BASIS OF PRESENTATION

The CNV, in Title IV, Chapter III, Article 1 of the Rules has provided that listed companies must submit their condensed consolidated financial statements by applying Technical Resolution No. 26 (modified by Technical Resolution No. 29) of the Argentine Federation of Professional Councils of Economic Sciences ("FACPCE"), which adopts the International Financial Reporting Standards ("IFRS") issued by the IASB, its amendments and circulars for the adoption of IFRS that the FACPCE dictates in accordance with the provisions of that Technical Resolution.

The Company has prepared these condensed interim consolidated financial statements in accordance with the accounting framework established by the CNV, which is based on the application of IFRS, particularly IAS 34.

The subsidiaries that reflect TGS's corporate group as of September 30, 2020 are Telcosur and CTG.

For consolidation purposes for the nine-month periods ended September 30, 2020 and 2019, Telcosur's financial statements have been used at those dates. The Company controlled CTG Energía S.A.U. does not record operations or significant assets and liabilities as of September 30, 2020 and 2019.

The interim condensed consolidated financial statements for the nine-month periods ended September 30, 2020 and 2019 have not been audited. The Management of the Company estimates that they include all the necessary adjustments to reasonably present the results of each period in accordance with the accounting framework applied. The results of the nine- month periods ended September 30, 2020 and 2019, do not necessarily reflect the proportion of the results of the Company for the full fiscal year.

Functional and presentation currency

The condensed interim consolidated financial statements are stated in thousands of Argentine pesos ("Ps." or "pesos"), the functional currency of the Company and its subsidiaries.

Restatement to current currency

The interim condensed consolidated financial statements as of September 30, 2020, including comparative figures, have been restated to take into account changes in the general purchasing power of the Company's functional currency in accordance with IAS 29 "Financial information in hyperinflationary economies" ("IAS 29") and in General Resolution No. 777/2018 of the CNV, using the BCRA's Market Expectations Survey for the last month of the period, since, at the date of closing the Company's accounting books, the INDEC index was not yet available. As a result, the financial statements are expressed in the unit of measurement current at the end of the reporting period.

9

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

The variation in the consumer price index ("CPI") for the restatement of these interim condensed consolidated financial statements was estimated at 22.8% and 37.26% for the nine-month periods ended September 30, 2020 and 2019, respectively. The variation in the Consumer Price Index as subsequently published by the INDEC for the nine-month period ended September 30, 2020 was 22.3%, not having a material impact on the Company's financial situation and results with respect to the index used.

Comparability of information

The balances as of December 31, 2019 and September 30, 2019 shown for comparative purposes were restated in accordance with IAS 29, as mentioned above. Certain figures have been reclassified for the purposes of their comparative presentation with those of the current period.

4. SIGNIFICANT ACCOUNTING POLICIES

The accounting policies applied to these condensed interim consolidated financial statements are consistent with those used in the financial statements for the last financial year prepared under IFRS, which ended on December 31, 2019, except for what it is mentioned below.

New accounting standards, modifications and interpretations issued by the IASB that have been adopted by the Company

The Company has applied the following regulations and / or modifications for the first time as of January 1, 2020:

Definition of materiality (amendments to IAS 1 and IAS 8)

In October 2018, the IASB included certain modifications to IAS 1 "Presentation of financial statements" and IAS 8 "Accounting policies, changes in accounting estimates and errors" with the aim of clarifying the concept of materiality and aligning this definition to the modifications introduced in the Conceptual Framework.

Additionally, said modifications incorporate new concepts that help both the preparers of financial statements and their users to prepare and interpret the financial information included in them.

It applies prospectively to the years beginning on or after January 1, 2020. The modifications to the materiality concept have not had a significant impact on these Company's condensed interim consolidated financial statements.

New accounting standards, modifications and interpretations issued by the IASB that are not in force

Next, the new IFRS standards or modifications to the IFRS issued that have not yet entered into force, if any, that may affect the Company are analyzed.

Classification of liabilities as current and non-current (amendment to IAS 1)

On January 23, 2020, the IASB issued amendments to paragraphs 69 to 76 of IAS 1 to specify the requirements for the classification of liabilities as current and non-current, which modifies IAS 1 Presentation

As a result of the COVID-19 pandemic, the IASB tentatively decided to publish a draft for discussion proposing to postpone the date of application of the amendment (initially for periods beginning on or after January 1, 2021) for periods beginning on or after of January 1, 2023.

10

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

5. FINANCIAL RISK MANAGEMENT

The Company's activities and the market in which it operates expose it to a series of financial risks: market risk (including foreign exchange risk, interest rate risk, and commodity price risk), credit risk and liquidity risk, that were described in the annual financial statements as of December 31, 2019.

In this sense, the Company operates in an economic context whose main variables have recently had a strong volatility as a consequence of public and economic events in the national and international scope mentioned in Note 1.

As mentioned in Note 1, the main variables of the worldwide and Argentinean economies have also negatively affected the cost of loans, hedging activities, liquidity and access to capital in general. In the local market, particularly, the shares of the main listed companies, sovereign bonds and the Argentine peso experienced a sharp drop in their market value.

In addition, as from April 2020, by issuing Communication "A" 7001, subsequently amended by Communication "A" 7030, 7042, 7052 and 7068, the BCRA established measures that intensify restrictions on the access to the official foreign exchange market ("MULC") including measures related to the operation of public trade assets by the companies.

Additionally, on May 25, 2020, and June 19, 2020, the CNV issued General Resolutions No. 841 and 843, establishing restrictions for the purchase and sale of negotiable securities in U.S. dollars, or their transfer to depositary companies abroad. Subsequently, by means of General Resolution N° 862, the CNV ordered certain flexibilities to the terms of permanence of said securities.

These measures aimed at restricting the MULC in order to contain the demand for dollars imply a request for prior authorization from the BCRA for certain transactions, including the following:

  • Payment of dividends to non-residents;
  • Payment of imports of certain goods abroad or cancellation of debts originated in their importation, except for some exceptions expressly provided for in the applicable regulations;
  • The creation of external assets; and
  • The payment of financial loans to non-residents.

If access to the MULC has been requested, the commitment must be assumed to enter and settle in the exchange market, within five business days of their availability, those funds received abroad originating from the collection of loans granted to third parties, the collection of a term deposit or the sale of any type of asset, when the asset had been acquired, the deposit constituted or the loan granted after May 28, 2020.

Additionally, on September 15, 2020, the BCRA published Communications "A" 7105 and 7106, which establishes, among other measures, that those who register loans with independent parties with capital maturities in foreign currency scheduled between October 15, 2020 and March 31, 2021, must submit to the BCRA a refinancing plan for capital maturities based on the following criteria: (a) that the net amount for which the foreign exchange market will be accessed original terms will not exceed 40% of the principal amount due in the period indicated above, and (b) that the rest of the capital is, at least, refinanced with a new external debt with an average life of 2 years, provided that the new debt is settled in the exchange market.

The aforementioned rule does not have immediate effect on the Company since the amortization of the capital of its notes operates on May 2, 2025, not within the aforementioned period. On the other hand, as of the date of issuance of these interim

11

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

condensed consolidated financial statements, the Company paid the total interest installment corresponding to its financial debt on November 2, 2020.

Additionally, the exchange regime already determined as mandatory the settlement in national currency of the funds obtained as a result of the following operations and concepts, among others:

  • Exports of goods and services;
  • Collections of pre-financing, advances and post-financing of goods export;
  • Exports of services;
  • Disposal of external assets.

These exchange restrictions, or those that may be provided in the future, could affect the Company's ability to access the official exchange market to acquire the necessary foreign exchange to meet its financial obligations. Assets and liabilities in foreign currency as of September 30, 2020 have been valued considering the current prices in the MULC. After September 30, 2020, the Company incurred Ps. 1,861,954 in foreign exchange losses on financial instruments maintained at the end of the period.

Due to the main impacts of the described situation detailed in Note 1 to these condensed interim consolidated financial statements, the Company has implemented a series of measures that will mitigate its impact. In this sense, the Company's Management constantly monitors the evolution of the situations that affect its business, to determine the possible actions to be taken and to identify the possible impacts on its equity and financial position. The Company considers that its current financial situation will allow it to comply, in the short term, with its commitments in foreign currency. The Company's financial statements should be read under the light of these circumstances.

6. CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS

The preparation of the condensed interim consolidated financial statements in accordance with generally accepted accounting principles requires management to make accounting estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as the reported amounts of revenues and expenses during the reporting period. These estimates require management to make difficult, subjective or complex judgments and estimates about matters that are inherently uncertain. Management bases its estimates on various factors, including past trends, expectation of future events regarding the outcome of events and results and other assumptions that it believes are reasonable.

As mentioned in Note 1, as a consequence of the development of COVID, the main macroeconomic and business variables of Argentina suffered a significant deterioration, which meant that the Argentine government must take a series of measures aimed at containing the negative impact. Therefore, given that it is an indicator of impairment of the amounts of Property, Plant and Equipment ("PPE"), as of March 31, 2020, the cash flows used to determine the recoverable value were re-estimated for each of the Cash Generating Units ("CGU") defined by the Company.

The value in use of PPE is sensitive to the significant variation in the assumptions applied, including the determination of future tariffs determined by the Argentine Government in the Natural Gas Transportation segment, and the expectation of business development in the Vaca Muerta area in the Other services segment.

In the Natural Gas Transportation segment, the Company considered a less favorable scenario taking into account the current regulatory framework and the measures taken by the Argentine Government after December 31, 2019. This implies that the current tariff would not be adjusted accordingly with future inflation during 2020.

12

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

In the Liquid Production and Commercialization segment, TGS has considered the current drop in future international liquids prices based on publicly available information.

The estimated recoverable values of PPE items are sensitive to significant variation in the assumptions made. In any case, it is not possible to ensure with certainty that the actual cash flows will be in line with the assumptions applied. Therefore, significant differences may arise in the future in relation to the estimated values in use.

The Company also updated its assessment of impairment indicators in accordance with IAS 36 as of September 30, 2020. The conclusion of that assessment was that no new factors were identified that would adversely affect the assumptions underlying the recoverable value of the assets included in PPE, with respect to the last assessment made, as of March 31, 2020.

According to the analysis mentioned above, the Company did not identify the need to book any impairment of the PPE amounts as of September 30, 2020.

7. SUPPLEMENTAL CASH FLOW INFORMATION

For purposes of the condensed interim consolidated statement of cash flows, the Company considers all highly liquid temporary investments with an original maturity of three months or less at the time of purchase to be cash equivalents. The cash flow statement has been prepared using the indirect method, which requires a series of adjustments to reconcile net income for the period to net cash flows from operating activities.

Non-cash investing and financing activities for the nine-month periods ended September 30,

2020 and 2019 are presented below:

2020

2019

Unpaid acquisition of PPE

246,595

1,892,466

Principal payment of financial lease (1)

138,631

158,823

Capitalization of finance costs

-

610,425

  1. Cancelled through compensation with trade receivables with the creditor. See Note 14.

Note 14 includes a reconciliation between the opening and closing balance of the financial liabilities arising from financing activities.

8. CONSOLIDATED BUSINESS SEGMENT INFORMATION

IFRS 8 "Operating Segments" requires an entity to report financial and descriptive information about its reportable segments, which are operating segments or aggregations of operating segments that meet specified criteria. Operating segments are components of an entity about which separate financial information is available that is evaluated regularly by the chief operating decision maker ("CODM") in deciding how to allocate resources and in assessing performance. The Company's CODM is the Board of Directors.

The Company analyzes its businesses into four segments: (i) Natural Gas Transportation Services, subject to ENARGAS regulations, (ii) Liquids Production and Commercialization, (iii) Other Services including midstream, among others, and (iv) Telecommunications. These last three business segments are not regulated by ENARGAS. Production and Commercialization of Liquids segment is regulated by the SE.

13

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

Detailed information on each business segment for the nine-month periods ended September 30, 2020 and 2019 is disclosed below:

Nine-month period ended September 30, 2020

Production and

Natural Gas

Commercialization

Other

Transportation

of Liquids

Services

Telecommunications

Eliminations

Total

Revenues

16,541,108

18,678,374

2,869,178

290,567

-

38,379,227

Intercompany revenues from sales

549,115

-

-

-

(549,115)

-

Cost of sales

(6,801,284)

(10,973,275)

(1,523,952)

(180,445)

549,115

(18,929,841)

Administrative expenses

(831,211)

(169,955)

(112,791)

(7,080)

-

(1,121,037)

Selling expenses

(1,019,138)

(1,016,869)

(202,415)

(34,741)

-

(2,273,163)

Other operating results

9,273

56,540

393

1,343

-

67,549

Operating profit

8,447,863

6,574,815

1,030,413

69,644

-

16,122,735

Depreciation of property, plant and equipment

(3,022,356)

(256,045)

(821,864)

-

-

(4,100,265)

Nine-month period ended September 30, 2019

Production and

Natural Gas

Commercialization

Other

Transportation

of Liquids

Services

Telecommunications

Eliminations

Total

Revenues

21,429,811

19,938,727

2,240,482

265,351

-

43,874,371

Intercompany revenues from sales

588,367

-

-

-

(588,367)

-

Cost of sales

(7,361,203)

(13,220,119)

(1,327,112)

(128,741)

588,367

(21,448,808)

Administrative expenses

(952,781)

(130,041)

(54,507)

(8,890)

-

(1,146,219)

Selling expenses

(1,258,676)

(1,221,904)

(252,158)

(33,895)

-

(2,766,633)

Other operating results

(145,363)

9,753

451

1,073

-

(134,086)

Operating profit

12,300,155

5,376,416

607,156

94,898

-

18,378,625

Depreciation of property, plant and equipment

(2,738,264)

(222,298)

(387,882)

-

-

(3,348,444)

The breakdown of revenues by market and opportunity for the nine-month periods ended September 30, 2020 and 2019 is as follows:

Nine-month period ended September 30, 2020

Natural Gas

Production and

Other Services

Telecommunications

Total

Commercialization

Transportation

of Liquids

Per destination market

External Market

-

3,760,306

-

-

3,760,306

Local Market

16,541,108

14,918,068

2,869,178

290,567

34,618,921

Total

16,541,108

18,678,374

2,869,178

290,567

38,379,227

Timing of revenue recognition:

Over the time

16,541,108

722,980

2,869,178

290,567

20,423,833

At a point in time

-

17,955,394

-

-

17,955,394

Total

16,541,108

18,678,374

2,869,178

290,567

38,379,227

Nine-month period ended September 30, 2019

Natural Gas

Production and

Commercialization

Other Services

Telecommunications

Total

Transportation

of Liquids

Per destination market

External market

-

7,021,656

-

-

7,021,656

Local market

21,429,811

12,917,071

2,240,482

265,351

36,852,715

Total

21,429,811

19,938,727

2,240,482

265,351

43,874,371

Timing of revenue recognition:

Over the time

21,429,811

1,081,060

2,240,482

265,351

25,016,704

At a point in time

-

18,857,667

-

-

18,857,667

Total

21,429,811

19,938,727

2,240,482

265,351

43,874,371

14

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

9. SUMMARY OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME ITEMS

  1. Other receivables

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Turnover tax credit balance

12,023

-

62,294

-

VAT credit balance

-

-

1,251,286

-

Income tax credit balance (1)

-

-

52,339

-

Other tax receivables

13,637

1,621

1,507

1,721

Prepaid expenses

168,709

-

111,434

-

Advances to suppliers

1,136,869

-

1,451,949

-

Subsidies receivables

239,468

-

176,681

-

Allowance for doubtful accounts

(163,222)

-

-

-

Other Receivables UT

39,203

-

47,919

-

Others

362,150

7,603

404,624

9,340

Total

1,808,837

9,224

3,560,033

11,061

  1. Provision, net of advances paid, withholdings and perceptions.

The movement of the allowance for doubtful accounts is as follows:

Balances as of 12/31/2018

-

Additions

-

Applications

-

Decreases

-

Balances as of 09/30/2019

-

Additions

-

Applications

-

Decreases

-

Balances as of 12/31/2019

-

Inflation adjustment restatement

(24,409)

Additions (1)

187,631

Applications

-

Decreases

-

Balances as of 09/30/2020

163,222

    1. Included in "Selling expenses".
  1. Trade receivables

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Commons

5,596,719

-

7,774,936

-

UT

37,675

-

16,968

-

Natural Gas Transportation

2,727,797

-

4,636,638

-

Production and Commercialization of Liquids

2,281,654

-

2,337,674

-

Other services

549,593

-

783,656

-

Related parties (Note 22)

333,683

-

343,290

-

Natural Gas Transportation

78,148

-

189,187

-

Production and Commercialization of Liquids

131,702

-

66,020

-

Other services

123,833

-

88,083

-

Allowance for doubtful accounts

(132,521)

-

(165,782)

-

Total

5,797,881

-

7,952,444

-

15

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

The movement of the allowance for doubtful accounts is as follows:

For doubtful accounts

Balances as of 12/31/2018

250,424

Inflation adjustment restatement

(68,408)

Additions

-

Applications

-

Decreases

-

Balances as of 09/30/2019

182,016

Inflation adjustment restatement

(19,225)

Additions (1)

2,991

Applications

-

Decreases

-

Balances as of 12/31/2019

165,782

Inflation adjustment restatement

(30,393)

Additions

-

Applications

-

Decreases (1)

(2,868)

Balances as of 09/30/2020

132,521

    1. Included in "Selling expenses".
  1. Cash and cash equivalents

09/30/2020

12/31/2019

Cash and banks

2,155,230

1,379,569

UT Cash and banks

1,907

3,388

Mutual funds in local currency

3,028,392

1,264,827

Mutual funds in foreign currency

1,215,680

-

Interest-bearing accounts

90,745

9,347,908

Total

6,491,954

11,995,692

d) Contract Liabilities

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Natural Gas Transportation

110,751

2,060,443

120,949

2,143,510

Production and Commercialization of Liquids

57,732

375,019

47,155

419,746

Other services

104,546

1,345,817

76,636

1,032,093

UT

15,547

-

25,266

-

Total

288,576

3,781,279

270,006

3,595,349

e) Other payables

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

UT Other liabilities

308,272

-

340,782

-

Provision for compensation for the Board of

Directors and Supervisory Committee

7,429

-

10,439

-

Others

1,794

-

2,143

-

Total

317,495

-

353,364

-

16

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION

(Stated in thousands of pesos as described in Note 3, unless otherwise stated)

_____________________________________________________________________________________________________

f) Taxes payables

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Health and safety tax

15,434

-

15,956

-

Withholdings for income tax made to third parties

135,860

-

181,869

-

Turnover Tax

109,735

-

104,763

-

Tax on exports

-

-

88,443

-

VAT

22,695

-

-

-

UT Others

-

-

419

-

Others

14,613

-

42,404

-

Total

298,337

-

433,854

-

g) Trade payables

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Suppliers

2,421,375

-

4,761,237

-

UT Suppliers

86,847

-

134,973

-

Customers (credit balances)

22,413

-

7,572

-

Related companies (Note 22)

148,012

-

149,379

-

Total

2,678,647

-

5,053,161

-

h) Revenues

For the three-month periods

For the nine-month periods

ended September 30,

ended September 30,

2020

2019

2020

2019

Sales of goods and services

12,730,923

12,506,580

38,158,237

43,671,866

Subsidies

174,291

58,560

220,990

202,505

Total

12,905,214

12,565,140

38,379,227

43,874,371

i)

Cost of sales

For the three-month periods

For the nine-month periods

ended September 30,

ended September 30,

2020

2019

2019

2018

Inventories at the beginning of the year

617,431

869,445

-

377,909

680,808

Purchases

3,162,552

3,320,241

-

8,945,162

11,529,777

Operating costs (Note 9.j.)

3,097,743

3,816,714

-

9,945,545

10,317,980

Inventories at the end of the period

(338,775)

(1,079,758)

-

(338,775)

(1,079,757)

Total

6,538,951

6,926,642

18,929,841

21,448,808

17

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

  1. Expenses by nature - Information required under art. 64 paragraph I, clause B) Commercial Companies Law for the nine-month periods ended September 30, 2020 and 2019

2020

2019

Operating expenses

Regulated

Non-regulated

Administrative

Selling

Financial

Accounts

Total

activities

activities

expenses

expenses

expenses

Total

Salaries, wages and other compensations

2,434,182

1,094,939

771,551

430,543

137,149

-

2,844,418

Social security taxes

579,312

243,991

168,574

132,536

34,211

-

546,233

Compensation to Directors and Supervisory Committee

25,914

-

-

25,914

-

-

28,588

Professional services fees

218,337

19,215

10,688

168,762

19,672

-

392,957

Technical operator assistance fees

1,117,965

750,092

367,873

-

-

-

967,020

Materials

272,619

88,435

184,184

-

-

-

354,929

Third parties services

382,716

163,609

163,664

42,573

12,870

-

419,244

Telecommunications and post expenses

27,718

5,623

5,487

14,849

1,759

-

36,693

Rents

18,807

7,422

3,713

7,015

657

-

42,356

Transports and freight

106,504

63,501

41,205

1,798

-

-

108,328

Easements

61,742

53,772

7,970

-

-

-

74,826

Offices supplies

6,011

1,106

939

3,757

209

-

12,526

Travels expenses

49,891

23,424

12,214

12,349

1,904

-

112,673

Insurance

168,150

96,735

60,729

10,673

13

-

95,820

Property, plant and equipment maintenance

1,197,172

1,030,058

145,370

21,744

-

-

1,855,456

Depreciation of property, plant and equipment

4,100,265

2,795,216

1,077,909

227,140

-

(1)

-

3,348,444

(1)

Taxes and contributions

2,180,989

351,744

20,218

837

1,808,190

-

2,789,036

Advertising

70,183

-

-

-

70,183

-

73,090

Doubtful accounts

184,763

-

-

-

184,763

-

-

Banks expenses

15,434

-

-

15,434

-

-

15,022

Interests expense

2,251,918

-

-

-

-

2,251,918

2,298,426

Foreign exchange loss

9,936,804

-

-

-

-

9,936,804

17,373,085

Capitalized finance costs

-

-

-

-

-

-

(610,425)

Costs of services rendered to third parties

78,865

-

78,865

-

-

-

16,404

Other expenses

42,206

12,402

23,108

5,113

1,583

-

96,772

Total 2020

25,528,467

6,801,284

3,144,261

1,121,037

2,273,163

12,188,722

Total 2019

7,361,203

2,956,777

1,146,219

2,766,633

19,061,089

33,291,921

  1. Includes tax on exports for Ps. 369,176 and Ps. 723,781 for the nine-month periods ended September 30, 2020 and 2019.

18

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

  1. Net financial results

For the three-month periods ended

September 30,

20202019

For the nine-month periods ended

September 30,

20202019

Financial income

Interest income

159,319

214,950

351,282

686,140

Foreign exchange gain

958,237

5,254,923

2,850,136

8,933,366

Subtotal

1,117,556

5,469,873

3,201,418

9,619,506

Financial expenses

Interest expense (1)

(762,408)

(828,724)

(2,251,918)

(2,298,426)

Foreign exchange loss

(3,307,636)

(12,832,507)

(9,936,804)

(17,373,085)

less: Capitalized finance costs

-

219,639

-

610,425

Subtotal

(4,070,044)

(13,441,592)

(12,188,722)

(19,061,086)

Other financial results

Notes repurchase results

-

-

360,344

-

Derivative financial instruments results

-

274,893

284,026

260,159

Fair value (losses) / gains on financial

instruments through profit or loss

(2,789,627)

139,853

(2,426,065)

672,344

Others

(78,254)

(143,639)

(258,246)

(394,647)

Subtotal

(2,867,881)

271,107

(2,039,941)

537,856

Gain on net monetary position

1,588,520

2,613,364

4,283,537

4,690,253

Total

(4,231,849)

(5,087,248)

(6,743,708)

(4,213,471)

  1. It includes Ps. 165,931 y Ps. 179,628 of accrued interest corresponding to leasing liabilities, for the nine month periods ended September 30, 2020 and 2019, respectively.
  1. Other operating results, net

For the three-month periods ended

For the nine-month periods

September 30,

ended September 30,

2020

2019

2020

2019

Net increase in provisions (1)

(32,220)

(64,429)

(94,296)

(165,255)

Recovery of insurance

16,737

-

141,945

-

Others

(8,062)

25,727

19,900

31,169

Total

(23,545)

(38,702)

67,549

(134,086)

  1. Including interest and legal expenses.
  1. Other financial assets at amortized cost

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

VRD bonds

3,080

3,834

4,121

6,637

US Treasury bills

8,356,103

-

1,278,292

-

Private debt bonds

-

13,828

-

-

Total

8,359,183

17,662

1,282,413

6,637

  1. Other financial assets at fair value through profit or loss

09/30/2020

31/12/2019

Corriente

No corriente

Corriente

No corriente

Public debt bonds

3,813,749

-

-

-

Public debt bonds in foreign currency

686,638

-

-

-

Total

4,500,387

-

-

-

19

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

  1. Payroll and social security taxes payable

09/30/2020

12/31/2019

Current

Non Current

Current

Non Current

Vacation benefit payable

362,421

-

375,706

-

Annual bonus payable

186,748

-

252,489

-

Social security taxes payable

141,411

-

160,851

-

UT

1,583

-

7,514

-

Total

692,163

-

796,560

-

10. INVESTMENTS IN ASSOCIATES

09/30/2020

12/31/2019

Issuer Information

Description of securities

Last financial statemets issued

Name and issuer

Face

Amount

Cost

Book

Main

Date

Common

Net (loss) / gain

Shareholders'

% of Common

Book

value

value

business

stock

for the period

equity

Stock

value

Transporte y Servicios de Gas

Pipeline

en Uruguay S.A.

Ps. Uru. 1

196,000

224

7,853

maintenance

03.31.2020

28

(477)

16,502

49.00

8,141

Emprendimientos de Gas

Pipeline construction

del Sur S.A. (in liquidation)

$1

116,130

2,488

484

and operation

03.31.2020

237

(61)

990

49.00

513

services

Pipeline construction

Gas Link S.A.

$1

502,962

10,558

104,801

and operation

03.31.2020

1,026

8,221

561,400

49.00

87,973

services

Total

113,138

96,627

20

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

11. JOINT ARRANGEMENTS

The breakdown of the amounts included in the statements of financial position related to the Company's participation in the UT as of September 30, 2020 and December 31, 2019, and its results for the nine-month periods as of September 30, 2020 and 2019 is the following:

09/30/2020

12/31/2019

Consolidated Statements of financial

position

Non current assets

-

-

Current assets

152,214

286,035

Total assets

152,214

286,035

Non current liabilities

-

-

Current liabilities

410,461

508,959

Total liabilities

410,461

508,959

Nine-month periods ended

September 30,

2020

2019

Consolidated Statements of

comprehensive income

Gross loss

(56,970)

(73,997)

Operating loss

(59,209)

(90,494)

Net Financial results

40,764

(43,522)

Comprehensive loss

(18,445)

(134,016)

12. SHARE OF GAIN / (LOSS) FROM ASSOCIATES

For the three-month periods

For the nine-month periods

ended September 30,

ended September 30,

2019

2018

2019

2018

EGS (in liquidation)

(28)

12

(29)

84

TGU

(122)

729

(288)

(909)

Link

2,154

24,419

16,832

(20,342)

Total

2,004

25,160

16,515

(21,167)

21

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

13. PROPERTY, PLANT AND EQUIPMENT

09/30/2020

12/31/2019

Cost

Depreciation

Accumulated at

Accumulated at

Beginning

End of

the beginning

at the end

Net book

Net book

Account

of the year

Additions

Retirements

Transfers

the period

of the year

Retirements

For the period

Rate %

of the period

value

value

Pipelines

77,807,256

-

(31,672)

2,784,592

80,560,176

38,379,049

(19,248)

1,445,469

2.2

39,805,270

40,754,906

39,428,207

Compressor plants

31,598,169

13,376

-

1,964,571

33,576,116

21,153,409

-

1,072,575

3,3 a 25

22,225,984

11,350,132

10,444,760

Other plants

32,538

-

-

-

32,538

10,979

-

828

3.3

11,807

20,731

21,559

Stations of regulation and/or

measurement of pressure

2,664,055

-

(852)

77,012

2,740,215

2,120,302

(852)

55,418

4.0

2,174,868

565,347

543,753

Other technical installations

517,354

-

-

4,805

522,159

445,055

-

8,765

6.7

453,820

68,339

72,299

Subtotal assets related to

natural gas transportation service

112,619,372

13,376

(32,524)

4,830,980

117,431,204

62,108,794

(20,100)

2,583,055

64,671,749

52,759,455

50,510,578

Non-regulated segment Pipelines

12,572,582

129

-

730,735

13,303,446

155,196

-

330,295

2.2

485,491

12,817,955

12,417,386

Non-regulated segment Compressor plants

2,526,025

-

-

18,561

2,544,586

982,885

-

205,257

3,3 a 25

1,188,142

1,356,444

1,543,140

Non-regulated segment Other plants

22,176,273

-

-

735,632

22,911,905

12,639,106

-

417,536

3.3

13,056,642

9,855,263

9,537,167

Non-regulated segment Stations of regulation and/or

measurement of pressure

773,648

-

-

29,461

803,109

53,765

-

22,970

4.0

76,735

726,374

719,883

Non-regulated segment Other technical installations

312,037

-

-

-

312,037

120,868

-

21,069

6.7

141,937

170,100

191,169

Subtotal assets related to Other Services and

Production and Commercialization of Liquids (1)

38,360,565

129

-

1,514,389

39,875,083

13,951,820

-

997,127

14,948,947

24,926,136

24,408,745

Lands

435,029

-

-

-

435,029

-

-

-

-

-

435,029

435,029

Buildings and constructions

4,357,250

-

-

180,091

4,537,341

2,236,518

-

69,511

2.0

2,306,029

2,231,312

2,120,732

Fittings and features in building

324,051

-

-

-

324,051

142,874

-

6,998

4.0

149,872

174,179

181,177

Machinery, equipment and tools

1,357,049

58,988

-

512

1,416,549

799,015

-

90,060

6,7 a 10

889,075

527,474

558,034

Computers and Telecommunication systems

1,117

-

-

-

1,117

1,117

-

-

6,7 a 10

1,117

-

-

Computers and Telecommunication systems

5,949,976

-

-

548,636

6,498,612

4,474,732

-

307,772

6,7 a 20

4,782,504

1,716,108

1,475,244

Vehicles

628,619

7,738

-

-

636,357

416,472

-

44,616

20

461,088

175,269

212,147

Furniture

280,741

89

-

989

281,819

273,377

-

1,126

10

274,503

7,316

7,364

Materials

3,860,065

1,738,508

(7,583)

(1,246,835)

4,344,155

-

-

-

-

-

4,344,155

3,860,065

Line pack

607,512

-

-

47,072

654,584

33,960

-

-

-

33,960

620,624

573,552

Works in progress

7,238,810

3,192,722

-

(5,875,834)

4,555,698

-

-

-

-

-

4,555,698

7,238,810

Total

176,020,156

5,011,550

(40,107)

-

180,991,599

84,438,679

(20,100)

4,100,265

88,518,844

92,472,755

91,581,477

(1) As of September 30, 2020 and December 31, 2019 includes Ps. 1,840,164 and Ps. 2,073,424, respectively corresponding to assets classified as rights of use.

22

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

14. LOANS

Short-term and long-term loans as of September 30, 2020 and December 31, 2019 comprise the following:

09/30/2020

12/31/2019

Current Loans

2018 Notes Interest

1,033,606

413,829

Pre-export finance

-

1,254,608

Leasing (Note 22)

427,075

446,996

Total Current Loans

1,460,681

2,115,433

Non Current Loans

2018 Notes (1)

36,669,544

36,664,614

Leasing (Note 22)

2,281,263

2,473,478

Total Non Current Loans

38,950,807

39,138,092

Total (2)

40,411,488

41,253,525

  1. As of September 30, 2020, it is net of Notes repurchase of Ps 1,339,549.
  2. Net of issuance expenses of Ps. 80,906 and Ps. 120,188 as of September 30, 2020 and December 31, 2019, respectively.

Loans are totally denominated in US dollars.

During the nine-month period ended September 30, 2020, through various transactions, the Company acquired 2018 Notes for a nominal value of US$ 17,584,000, for which an average price of US$ 71.53 was paid for each US$ 100 of nominal value. The result generated, which amounted to Ps. 360,344, was recorded in the item Financial Results of the Statement of Comprehensive Income (see note 9.k.).

The activity of the loans as of September 30, 2020 and 2019 is the following:

2020

Leases

liabilities

Other payables

2019

Beginning balance

2,920,474

38,333,051

38,922,166

Inflation adjustment restatement

(739,130)

(7,573,951)

(12,642,784)

Accrued interest

165,931

1,871,450

2,044,290

Effect of foreign exchange effect

688,738

8,796,779

16,982,143

VAT unpaid installments

10,772

-

31,805

Acquisition of notes result

-

(360,344)

-

Payment of loans(1)

(138,631)

(1,221,825)

(181,858)

Payment of redemption of loans

-

(902,139)

-

Interest paid(2)

(199,816)

(1,239,871)

(1,350,437)

Ending balance

2,708,338

37,703,150

43,805,325

  1. For the nine-month periods ended on September 30, 2020 and 2019, Ps. 138,631 and Ps. 158,823 respectively, were cancelled offsetting debit balances held with the creditor (Pampa Energía).
  2. For the nine-month periods ended on September 30, 2020 and 2019, Ps. 96,565 and Ps. 131,489, respectively, were cancelled offsetting debit balances held with the creditor (Pampa Energía).

23

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

15. INCOME TAX AND DEFERRED TAX

The following table includes the income tax expense charged to the statement of comprehensive income in the nine-month periods ended September 30, 2020 and 2019:

Three-month period ended

Nine-month period ended

September 30,

September 30,

2020

2019

2020

2019

Current income tax

(357,247)

471,236

(2,424,976)

(3,332,800)

Deferred income tax

(473,954)

205,457

(805,007)

(432,508)

Total income tax

(831,201)

676,693

(3,229,983)

(3,765,308)

The composition of the net deferred tax liabilities as of September 30, 2020 and December 31, 2019, is as follows:

Deferred assets / (liabilities)

09/30/2020

12/31/2019

Allowance for doubtful accounts

-

898

Tax credits discounted value loss

-

437

Account receivables discounted value

568

898

Provisions for legal claims and other provisions

201,890

190,221

Financial leases

686,055

737,379

Contract liabilities

596,385

619,227

Other receivables

40,418

-

Loans

(21,401)

(32,265)

Property, plan and equipment

(5,371,152)

(5,342,470)

Cash and cash equivalents

(15,439)

(2,614)

Inventories

(21,469)

(24,734)

Other financial assets at amortized cost

(180,485)

(2,290)

Tax inflation adjustment

(2,570,707)

(1,995,017)

Tax loss carryforward allowance

718,626

-

Provision for tax loss carryforward

(718,626)

-

Total

(6,655,337)

(5,850,330)

As of September 30, 2020, the Company generated a specific tax loss derived from financial results of Ps. 718,626. In order to determine the recoverability of such loss, the Company takes into consideration the reversal of deferred items, its tax planning and projections of specific future taxable income based on its best estimate. Based on these projections and because it is not possible to estimate the generation of future specific financial gains that would allow the absorption of such loss, a provision of Ps. 718,626 has been made as of September 30, 2020.

24

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

16. PROVISIONS

For legal claims and others

Balances as of 12/31/2018

701,394

Inflation adjustment restatement

(216,974)

´(1)

Additions

263,463

Uses

(37)

Decreases

(305)

Balances as of 09/30/2019

747,541

Inflation adjustment restatement

(79,126)

´(3)

Additions

71,251

Uses

(9,287)

´(2)

Decreases

(6,699)

Balances as of 12/31/2019

723,680

Inflation adjustment restatement

(151,281)

Additions

207,223

´(4)

Uses

(446)

Decreases

(3,453)

Balances as of 09/30/2020

775,723

  1. Ps. 165,256 are included in "Other operating results" and Ps. 98,207 in "Financial expenses".
  2. Included in "Other operating results".
  3. Ps. 33,533 are included in "Other operating results" and Ps. 37,718 in "Financial expenses".
  4. Ps. 97.749 are included in "Other operating results"and Ps. 109,474 in "Financial Expenses".

17. FINANCIAL INSTRUMENTS BY CATEGORY AND HIERARCHY

17.1 Financial instrument categories

There have been no significant changes regarding the accounting policies for the categorization of financial instruments to the policies disclosed in the financial statements as of December 31, 2019.

The categories of financial assets and liabilities as of September 30, 2020 and December 31, 2019 are as follows:

25

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

September 30, 2020

Financial assets

Financial assets

at amortized

at fair value

cost

Total

CURRENT ASSETS

Trade receivables

-

5,797,881

5,797,881

Other receivables

-

438,396

438,396

Other financial assets at amortized cost

-

8,359,183

8,359,183

Other financial assets at fair value through profit or

loss

4,500,387

-

4,500,387

Cash and cash equivalents

4,244,072

2,247,882

6,491,954

Total current assets

8,744,459

16,843,342

25,587,801

NON-CURRENT ASSETS

Other receivables

-

7,603

7,603

Other financial assets at amortized cost

-

17,662

17,662

Total non-current assets

-

25,265

25,265

Total assets

8,744,459

16,868,607

25,613,066

Financial

liabilities at fair

Other financial

value

liabilities

Total

CURRENT LIABILITIES

Trade payables

-

2,678,647

2,678,647

Loans

-

1,460,681

1,460,681

Payroll and social security taxes payables

-

608,695

608,695

Other payables

-

317,495

317,495

Total current liabilities

-

5,065,518

5,065,518

NON-CURRENT LIABILITIES

Loans

-

38,950,807

38,950,807

Total non-current liabilities

-

38,950,807

38,950,807

Total liabilities

-

44,016,325

44,016,325

December 31, 2019

Financial assets

Financial assets

at fair value

at amorized cost

Total

CURRENT ASSETS

Trade receivables

-

7,952,444

7,952,444

Other receivables

-

581,304

581,304

Derivative financial instruments

336,614

-

336,614

Other financial assets at amortized cost

-

1,282,413

1,282,413

Cash and cash equivalents

1,264,827

10,730,865

11,995,692

Total current assets

1,601,441

20,547,026

22,148,467

NON-CURRENT ASSETS

Other receivables

-

9,340

9,340

Other financial assets at amortized cost

-

6,637

6,637

Total non-current assets

-

15,977

15,977

Total assets

1,601,441

20,563,003

22,164,444

Financial

liabilities at fair

Other financial

value

liabilities

Total

CURRENT LIABILITIES

Trade payables

-

5,053,161

5,053,161

Loans

-

2,115,433

2,115,433

Payroll and social security taxes payables

-

655,354

655,354

Other payables

-

353,364

353,364

Total current liabilities

-

8,177,312

8,177,312

NON-CURRENT LIABILITIES

Loans

-

39,138,092

39,138,092

Total non-current liabilities

-

39,138,092

39,138,092

Total liabilities

-

47,315,404

47,315,404

26

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

1.2 Fair value measurement hierarchy and estimates

According to IFRS 13, the fair value hierarchy introduces three levels of inputs based on the lowest level of input significant to the overall fair value. These levels are:

  • Level 1: includes financial assets and liabilities whose fair values are estimated using quoted prices (unadjusted) in active markets for identical assets and liabilities. The instruments included in this level primarily include balances in mutual funds and public or private bonds listed on the Bolsas y Mercados Argentinos S.A. ("BYMA").
  • Level 2: includes financial assets and liabilities whose fair value is estimated using different assumptions quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (for example, derived from prices). Within this level, the Company includes those derivate financial instruments for which it was not able to find an active market.
  • Level 3: includes financial instruments for which the assumptions used in estimating fair value are not based on observable market information.

The table below shows different assets at their fair value classified by hierarchy as of September 30, 2020:

Financial assets at fair value

Level 1

Level 2

Level 3

Total

Financial assets at fair value

Cash and cash equivalents

4,244,072

-

-

4,244,072

Other financial assets at fair value through profit or

loss

4,500,387

-

-

4,500,387

Total

8,744,459

-

-

8,744,459

The fair value amount of the financial assets is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

As of September 30, 2020, the carrying amount of certain financial instruments used by the Company including cash, cash equivalents, other investments, receivables, payables and short- term loans are representative of fair value because of the short-term nature of these instruments.

The estimated fair value of Non-current loans is estimated based on quoted market prices. The following table reflects the carrying amount and estimated fair value of the 2018 Notes at September 30, 2020, based on their quoted market price:

Carrying amount

Fair value

2018 Notes

37,703,150

29,995,351

27

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

18. ASSETS AND LIABILITIES IN FOREIGN CURRENCY

Balances in foreign currencies as of September 30, 2020 and December 31, 2019 are detailed below:

09/30/2020

12/31/2019

Foreign currency

Amount

Foreign currency

Amount

and amount

Exchange

in local

and amount

in local

(in thousands)

rate

currency

(in thousands)

currency

CURRENT ASSETS

Cash and cash equivalents

US$

54,600

75.980

(1 )

4,148,508

US$

143,920

10,552,779

Derivative financial instruments

US$

-

75.980

(1 )

-

US$

4,591

336,614

Other financial assets at amortized cost

US$

109,978

75.980

(1 )

8,356,103

US$

17,433

1,278,292

Other financial assets at fair value through profit

(1 )

4,500,387

US$

-

-

or loss

US$

59,231

75.980

Trade receivables

US$

30,743

75.980

(1 )

2,335,853

US$

43,091

3,159,601

Other receivables

US$

2,564

75.980

(1 )

194,813

US$

325

23,830

Total current assets

US$

257,116

19,535,664

US$

209,360

15,351,116

NON CURRENT ASSETS

Other financial assets at amortized cost

US$

182

75.980

(1 )

13,828

US$

-

-

Total non-current assets

US$

182

13,828

US$

-

-

TOTAL ASSETS

US$

257,298

19,549,492

US$

209,360

15,351,116

CURRENT LIABILITIES

Trade payables

US$

21,783

76.180

(2 )

1,659,429

US$

59,595

4,384,381

Loans

US$

19,174

76.180

(2 )

1,460,681

US$

28,754

2,115,433

Contract liabilities

US$

1,322

76.180 (2 )

100,736

US$

990

72,824

Total current liabilities

US$

42,279

3,220,846

US$

89,339

6,572,638

NON CURRENT LIABILITIES

Loans

US$

511,300

76.180

(2 )

38,950,807

US$

531,987

39,138,092

Contract liabilities

US$

17,379

76.180 (2 )

1,323,910

US$

13,692

1,007,329

Total non current liabilities

US$

528,678

76.180 (2 )

40,274,717

US$

545,679

40,145,421

TOTAL LIABILITIES

US$

570,958

43,495,563

US$

635,018

46,718,059

(1 ) Buy exchange rate at the end of fiscal period

(2 ) Sell exchange rate at the end of fiscal period

US$: United States of America dollars

28

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

19. REGULATORY FRAMEWORK

The main regulatory issues are described in Note 17 to the annual consolidated financial statements. The developments for the nine-month period ending 30 September 2020 are described below:

Regulatory framework for the Natural Gas Transportation segment

On June 9, 2020, through Resolution No. 80/2020, ENARGAS created the Coordination and Centralization Commission - Law No. 27,541 and Presidential Decree No. 278/20, which will have the purpose of coordinating the process of integral tariff review provided for in Article 5 of Law No. 27. 541 - Law of Social Solidarity and Production Reactivation within the Framework of the Public Emergency ("Solidarity Law") which, additionally, provided that natural gas transportation and distribution tariffs would remain unadjusted for a maximum period of 180 days as of December 23, 2019 and empowered the Executive Branch to renegotiate them, either within the framework of the RTI in force or by means of an extraordinary review as provided for in the Natural Gas Law.

On June 19, 2020, the Executive Branch issued Presidential Decree No. 543/2020 extending the validity of the aforementioned Article 5 for an additional period of 180 calendar days, until December 16, 2020.

Regulatory framework of the Production and Commercialization of Liquids segment

Domestic market

In accordance with Presidential Decree No. 311 dated March 25, 2020, the maximum reference prices for the commercialization of liquefied petroleum gas (LPG), which the Company commercializes in the domestic market, remain unchanged for a period of 180 calendar days from its issuance.

Foreign market

Presidential Decree No. 488/2020 regulated the applicable tax rate on exports of certain oil and gas products, including those products that we export, establishing a range between 0% and 8% depending on the "ICE Brent first line" barrel price. If the mentioned price is below US$ 45 the rate will be zero. On the other hand, if the price is equal to or higher than US$ 60, an 8% rate will be paid, which will be variable if the price is between US$ 45 and US$

60. Since this decree came into effect on May 19, 2020, the applicable export tax rate has been 0%.

20. COMMON STOCK AND DIVIDENDS

  1. Common stock structure and shares' public offer

As of September 30, 2020, TGS' common stock was as follows:

Amount of common stock, subscribed, issued and authorized for

public offer

Common Shares

Outstanding shares

Treasury Shares

Common Stock

Class

(Face value $ 1, 1

vote)

Class "A"

405,192,594

-

405,192,594

Class "B"

350,417,476

38,885,213

389,302,689

Total

755,610,070

38,885,213

794,495,283

29

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

TGS's shares are traded on the BYMA and under the form of the ADSs (registered with the Securities and Exchange Commission ("SEC") and representing 5 shares each) on the New York Stock Exchange.

  1. Acquisition of treasury shares

On March 6, 2020, the Company's Board of Directors approved the sixth Program for the Acquisition of TGS treasury Shares in the markets where it makes a public offering of its shares (the "Sixth Repurchase Program") for a maximum amount of Ps. 2,500 million (at the time of its creation).

Subsequently, on August 21, 2020, the Board of Directors approved a new Program for the Acquisition of TGS treasury Shares for a maximum amount to be invested in Ps. 3,000 million (at the time of its creation). This program will run until March 22, 2021.

As of September 30, 2020, the Company holds 38,885,213 treasury shares, representing 4.89% of the total share capital. The acquisition cost of the treasury shares in the market amounted to Ps. 3,144,878 and the Additional paid-up capital amounted to Ps. 972,549, which, in accordance with the provisions of Title IV, Chapter III, Article 3.11.c of the Rules, restricts the amount of the realized and liquid gains mentioned above that the Company may distribute.

  1. Restrictions on distribution of retained earnings

Pursuant to the General Companies Act and CNV Rules, we are required to allocate a legal reserve ("Legal Reserve") equal to at least 5% of each year's net income (as long as there are no losses for prior fiscal years pending to be absorbed) until the aggregate amount of such reserve equals 20% of the sum of (i) "common stock nominal value" plus (ii) "inflation adjustment to common stock," as shown in our consolidated statement of changes in equity.

Finally, and as mentioned in subsection b of this note, the amounts subject to distribution are restricted up to the acquisition cost of treasury shares and the paid-up capital.

In accordance with current exchange regulations and in order to have access to the exchange market, for the payment of dividends to non-resident shareholders of Argentina, the Company must require the prior approval of the BCRA. For further information, see Note 5 - "Financial Risk Management".

21. LEGAL CLAIMS AND OTHER MATTERS

The main changes occurring between January 1, 2020 and the date of issuance of these condensed interim consolidated financial statements are as follows. For further information regarding the claims and legal matters of the Company, see Note 20 "Legal Claims and Other Matters" to the consolidated financial statements as of December 31, 2019, issued on March 6, 2020.

Action for annulment of ENARGAS Resolutions No. I-1,982/11 and No. I-1,991/11 (the "Resolutions")

On October 29, 2019, the intervening judge decided, considering what was decided in the judgment and attending to the reasons invoked by TGS, to extend the validity of the precautionary measure issued for six more months of processing in said ordinary process and / or until the sentence passed is firm.

Considering the isolation measures adopted by the Argentine Government by the development of COVID, the judicial terms were suspended from March 20, 2020 until July 21, 2020. Whereas the six-month period should not be counted during the suspended period, the remaining period of 2

30

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

months and 9 days will be reached on September 29, 2020. Before the expiration of this period, the Company requested a further extension of this precautionary measure, which has not yet been granted.

22. BALANCES AND TRANSACTIONS WITH RELATED COMPANIES Key management compensation

The accrued amounts corresponding to the compensation of the members of the Board of Directors, the Statutory Committee and the Executive Committee for the nine-month periods ended September 30, 2020 and 2019 were Ps. 93,888 and Ps. 146,639, respectively.

Balances and transactions with related parties

The detail of significant outstanding balances for transactions entered into by TGS and its related parties as of September 30, 2020 and December 31, 2019 is as follows:

09/30/2020

12/31/2019

Accounts

Accounts

Accounts

Accounts

Company

receivable

payable

receivable

payable

Controlling shareholder:

CIESA

-

-

45

-

Associate which exercises joint control on the

controlling shareholder:

Pampa Energía (1)

320,617

2,844,224

258,121

3,058,141

Associate which exercises significant

influence on the controlling shareholder:

Link

3,549

-

821

-

TGU

-

12,126

-

11,712

Other related companies:

SACDE Sociedad Argentina de Construcción (2)

1,855

-

28,676

-

Pampa Comercializadora S.A.

7,812

-

53,857

-

CT Barragan S.A.

1,674

-

9,988

-

Oleoductos del Valle S.A.

-

-

4,113

-

Central Piedra Buena S.A.

-

-

16,345

-

Transener S.A.

31

-

-

-

Total

335,538

2,856,350

371,966

3,069,853

  1. Accounts payable includes Ps. 2,708,338 and Ps. 2,920,474 corresponding to the financial leasing recorded as "Loans" as of September 30, 2020 and December 31, 2019, respectively.
  2. Corresponds to advance payments delivered to the supplier recorded as "Other receivables".

The detail of significant transactions with related parties for the nine-month periods ended

September 30, 2020 and 2019 is as follows:

Nine-month period ended September 30, 2020:

Financial

Revenues

Costs

results

Natural Gas

Production and

Gas purchase

Compensation

Revenues for

commercialization

for technical

administrative

Interest

Company

Transportation

of liquids

Other services

and others

assistance

services

expense

Controlling shareholder:

CIESA

-

-

-

-

-

99

-

Associate which exercises joint control on the

controlling shareholder:

Pampa Energía

591,791

586,056

402,158

79,279

1,117,965

-

165,931

Associates with significant influence:

Link

-

-

13,222

-

-

-

-

Other related companies:

Oleoductos del Valle S.A.

18,106

-

-

-

-

-

-

Pampa Comercializadora S.A.

82,693

-

-

-

-

-

-

Central Piedra Buena S.A.

1,574

-

-

-

-

-

-

Experta ART

-

-

-

17,045

-

-

-

Total

694,164

586,056

415,380

96,324

1,117,965

99

165,931

31

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

Additionally, during the nine-month period ended September 30, 2020, the Company received from SACDE Sociedad Argentina de Construcción, construction engineering services for Ps. 423,732, which are activated within the balance of PPE.

Nine-month period ended September 30, 2019:

Financial

Revenues

Costs

results

Production and

Compensation

Revenues for

Natural Gas

commercialization

Gas purchase

for technical

administrative

Interest

Company

Transportation

of liquids

Other services

and others

assistance

services

expense

Controlling shareholder:

CIESA

-

-

-

-

-

141

-

Associate which exercises joint control on the

controlling shareholder:

Pampa Energía

760,125

248,746

231,033

695,529

967,020

-

179,628

Associates with significant influence:

Link

-

-

12,867

-

-

-

-

Other related companies:

Oleoductos del Valle S.A.

5,885

-

-

-

-

-

-

Pampa Comercializadora S.A.

63,560

-

-

-

-

-

-

Central Térmica Piedrabuena S.A.

147,683

-

-

-

-

-

-

Experta ART

-

-

-

18,244

-

-

-

Total

977,253

248,746

243,900

713,773

967,020

141

179,628

23. ASSOCIATES AND JOINT AGREEMENT Associates with significant influence

Link:

Link was created in February 2001, with the purpose of the operation of a natural gas transportation system, which links TGS's natural gas transportation system with the Cruz del Sur S.A. pipeline. The connection pipeline extends from Buchanan (Buenos Aires province), located in the high-pressure ring that surrounds the city of Buenos Aires, which is part of TGS's pipeline system, to Punta Lara. TGS's ownership interest in such company is 49% and Dinarel S.A. holds the remaining 51%.

TGU:

TGU is a company incorporated in Uruguay. This company rendered operation and maintenance services to Gasoducto Cruz del Sur S.A. and its contract terminated in 2010. TGS holds 49% of its common stock and Pampa Energía holds the remaining 51%.

EGS (in liquidation):

In September 2003, EGS, a company registered in Argentina, was incorporated. The ownership is distributed between TGS (49%) and TGU (51%).

EGS owned a natural gas pipeline, which connects TGS's main pipeline system in the Province of Santa Cruz with a delivery point on the border with Chile.

In October 2012, ENARGAS issued a resolution which authorizes EGS to transfer the connection pipeline and service offerings in operation to TGS. On November 13, 2013, the sale of all the fixed assets of EGS to TGS for an amount of US$ 350,000 was made, the existing natural gas transportation contracts were transferred and the procedures to dissolve the Company were initiated.

The Board of Directors Meeting held on January 13, 2016, approved to initiate the necessary steps for the dissolution of EGS. The Special Shareholders Meeting held on March 10, 2016 appointed EGS' liquidator.

32

English translation of the original prepared in Spanish for publication in Argentina

TRANSPORTADORA DE GAS DEL SUR S.A.

NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF SSEPTEMBER 30, 2020 AND COMPARATIVE INFORMATION (Stated in thousands of pesos as described in Note 3, unless otherwise stated)

Joint Agreement

UT:

The Board of Directors of TGS approved the agreement to set up the UT together with SACDE. The objective of the UT is the assembly of pipes for the construction of the project of "Expansion of the System of Transportation and Distribution of Natural Gas" in the Province of Santa Fe, called by National Public Bid No. 452-0004-LPU17 by the MINEM (the "Work").

On October 27, 2017, TGS - SACDE UT signed the corresponding work contract with the MINEM.

The validity of the UT will be until it has fulfilled its purpose, once the Work is completed and until the end of the guarantee period, set at 18 months from the provisional reception.

As of September 30, 2020, the Work is being executed.

24. INFORMATION REQUIRED BY ARTICLE 26 OF SECTION VII CHAPTER IV TITLE II OF CNV RULES

In order to comply with General Resolution No. 629/2014 TGS informs that supporting and management documentation related to open tax periods is safeguarded by Iron Mountain Argentina S.A. at its facilities are located at 2482 Amancio Alcorta Avenue in the Autonomous City of Buenos Aires.

As for commercial books and accounting records, they are situated in the headquarters of the Company in areas that ensure its preservation and inalterability.

The Company has available in its headquarters to CNV details of the documentation given in safeguard to third parties.

25. SUBSEQUENT EVENTS

There were no existing significant subsequent events between the closing date of nine-month period ended September 30, 2020 and the date of the approval (issuance) of these condensed interim consolidated financial statements in addition to those disclosed therein.

Horacio Turri

Chairman of the Board of Directors

33

English translation of the original report issued in Spanish for publication in Argentina

REPORT ON REVIEW OF INTERIM FINANCIAL INFORMATION

To the Shareholders, President and Directors of

Transportadora de Gas del Sur S.A.

Legal address: Don Bosco 3672, 5th Floor

Ciudad Autónoma de Buenos Aires

CUIT N° 30-65786206-8

I. Report on the Financial Statements

Introduction

  1. We have reviewed the accompanying condensed interim consolidated financial statements of Transportadora de Gas del Sur S.A., which comprises: (a) the consolidated statement of financial position at September 30, 2020, (b) the consolidated statements of comprehensive income, changes in equity and cash flows for the three and nine-month period then ended, and (c) a summary of significant accounting policies and other explanatory notes.
  2. The balances and other information corresponding to the fiscal year 2019 and to its interim periods are an integral part of the financial statements mentioned above; therefore, they must be considered in connection with these financial statements.

Responsibility of the Board of Directors

3. The Company's Board of Directors is responsible for the preparation and presentation of these condensed interim consolidated financial statements under the International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board ("IASB"), and adopted by the Federación Argentina de Consejos Profesionales de Ciencias Económicas ("FACPCE") as its professional accounting standards and added by the Comisión Nacional de Valores ("CNV") to its regulations; therefore, it is responsible for the preparation and presentation of the condensed interim consolidated financial statements mentioned above in accordance with International Accounting Standard 34 "Interim Financial Reporting" ("IAS 34"). The Company's Board of Directors is also responsible for performing the internal control procedures that they may deem necessary to enable the preparation of the condensed interim consolidated financial statements that are free from material misstatements, either due to errors or irregularities.

Scope of review

4. Our responsibility is to express a conclusion on the accompanying consolidated financial statements based on our review, which was conducted in accordance with International Standard on Review Engagements 2410, 'Review of interim financial information performed by the independent auditor of the entity', as issued by the International Auditing and Assurance Standards Board ("IAASB"), and adopted by the FACPCE as its standard of review in Argentina by Technical Resolution N° 33. Such standard requires auditor to comply with the ethical requirements relevant to the audit of the Company's annual financial statements. A review of interim financial information consists of making inquiries, primarily of persons responsible for financial and accounting matters, and applying analytical and other review procedures. A review is substantially less in scope than an audit conducted in accordance with International Standards

Price Waterhouse & Co. S.R.L.

Firma miembro de PricewaterhouseCoopers Bouchard 557, piso 8º

C1106ABG ‐ Ciudad de Buenos Aires Tel: (54‐11) 4850‐0000

Fax (54‐11) 4850‐1800 www.pwc.com/ar

Pistrelli, Henry Martin y Asociados S.R.L. Miembro de Ernst & Young Global Limited 25 de Mayo 487 - C1002ABI

Buenos Aires ‐ Argentina

Tel.: (54‐11) 4318‐1600

Fax: (54‐11) 4510‐2220 www.ey.com

English translation of the original report issued in Spanish for publication in Argentina

on Auditing and consequently does not enable us to obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express an audit opinion.

Conclusion

5. Based on our review, nothing has come to our attention that causes us to believe that the condensed interim consolidated financial statements mentioned in paragraph 1. are not prepared, in all material respects, in accordance with IAS 34.

II. Report on other legal and regulatory requirements

In compliance with current regulations, we report that:

  1. The condensed interim consolidated financial statements of Transportadora de Gas del Sur S.A. comply, in what is within our competence, with the provisions of the Commercial Companies Law and pertinent resolutions of the CNV, except for their absence of transcription to the "Inventory and Financial Statements" book as mentioned in note 2 to the accompanying condensed consolidated financial statements.
  2. As mentioned in note 2 to the accompanying consolidated financial statements, the condensed interim separate financial statements of Transportadora de Gas del Sur S.A. do not arise from accounting records kept, in their formal aspects, in accordance with current legal regulations.
  3. The information included in points 4, 5, 6 and 8 in the "Analysis of financial conditions and results of operations for the nine--month periods ended September 30,2020, 2019 and 2018", which is presented together with the condensed interim financial statements to comply with CNV regulations, arise from the accompanying condensed interim consolidated financial statements at September 30, 2020 and from the condensed interim consolidated financial statements at September 30, 2019, restated to the currency of purchasing power as of September 30, 2020, which are not included in the accompanying condensed interim consolidated financial statements and on which we have issued an limited review report dated November 7, 2019, to which we refer, which should be read together with this report.
  4. At September 30, 2020 the liabilities accrued in employee and employer contributions to the Argentine Integrated Social Security System according to the Company's accounting records amounted to $44,714,398, none of which was claimable at that date.

City of Buenos Aires, November 6, 2020.

PISTRELLI, HENRY MARTIN Y ASOCIADOS S.R.L

PRICE WATERHOUSE & CO. S.R.L.

(Partner)

(Partner)

Dr. Fernando A. Rodriguez

Ezequiel A. Calciati

2

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TGS - Transportadora de Gas del Sur SA published this content on 24 November 2020 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 24 November 2020 17:40:10 UTC