AES Gener S A : 3Q-2017 RESULTS

​AES GENER 3Q-2017 RESULTS

- AES Gener achieved LTM EBITDA US$769 million in the twelve months ended September 30, 2017.

- Year-to-date EBITDA reached US$562 million, 2% lower compared to the EBITDA recorded in the first nine-months of 2016.

- AES Gener recorded a quarterly EBITDA of US$182 million during the third quarter of 2017, 20% lower compared to the EBITDA recorded in the same period in 2016.

- Year-to-date Net Income Attributable to Parent ('Net Income') reached US$114 million, US$76 million less compared to Net Income of the same period in 2016.

2017 YEAR TO DATE HIGHLIGHTS

- AES Gener S.A. (hereinafter referred to as AES Gener, Gener, or the Company) continues to maintain its lead position as the largest energy producer in Chile during the first nine-months of 2017, 30% of the total generation on the SIC and SING grids.

- The 550 MW Cochrane plant is fully contracted and operational since October 2016, making strong EBITDA contributions in 2017 YTD.

- AES Gener has reached a new agreement with ENEL to ensure revenue contributions in 2018 from Nueva Renca through a profit sharing agreement. Since January 2017, Nueva Renca has been operating a similar agreement with ENEL signed in 2016.

- AES Gener continues to improve its credit profile, through debt prepayments. Since January 2016, the company has prepaid US$127 million and expects to continue reducing debt to improve its credit metrics.

- In April, the Company declared dividends of US$261 million payable in 2017, equal to 100% of Net Income in 2016. US$146 million distributed in May 2017, and US$60 million in September 2017.

- In June the Company launched AES Gener Energía Distribuida a new business line to provide solar-based distributed generation solutions to industrial customers. PV installations have been completed at Viña Miguel Torres and the Ministry of Social Development, with additional projects under development.

- During 2016 and 2017, our equity method investee, Guacolda, signed ~1,200 GWh/y in contracts with industrial offtakers with three to seven-year tenors, increasing the medium-term contracted level of the company.

- AES Gener has consolidated an important part of its 1,256 MW third phase expansion program, with a portfolio of projects of power generation of diverse technology. During 2016, 573 MW of the third-phase projects came online, with the only remaining project, the 531 MW Alto Maipo hydro project, at 57.2% completion as of September 30, 2017.

- Since February 2016, AES Gener has started the commercialization of energy from SING to SADI through its InterAndes transmission line. Approximately 35 GWh were exported in 2017 year-to-date.

- Argentina's Secretariat of Energy issued Resolution 19/2017 in February 2017. The new regulation improved the Energía Base program´s energy and power tariffs, which are now set in US Dollars, and eliminated the retention of payments. For TermoAndes, the power and energy not committed under the Energía Plus contracts will be sold according to this framework.

- For the third year in a row, Gener will form part of the Dow Jones Sustainability Index in Chile.

- The 2014 Chilean tax reform incorporated a new tax on air emissions. In the case of CO2, the tax is US$5 per ton of C02 emitted from stationary sources larger than 50MW. The first payment of this tax will take place in April 2018 on the emissions produced in 2017. Accrual of the green taxes, payable in 2018, began in 2017 and is accounted for on the Other Cost of Sales line of the Income Statement.

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AES GENER

CONFERENCE CALL INVITATION

3Q-2017 EARNINGS

A conference call will be held on:

Thursday, Nov 2, 2017 at 12:00 PM Chile (11:00 am EST).

The Conference Call will be conducted in English and will be hosted by:

Javier Giorgio - Chief Executive Officer

Ricardo Falú - Chief Financial Officer

Following the presentation, you will have the opportunity to participate in a Q&A Session.

To access the live webcast, log on at https://edge.media-server.com/m6/p/fwt37tc8 or call any of the

phone numbers below 5 to 10 minutes before the conference call is scheduled to start:

US Toll (Outside US) 1 [phone]

US Toll Free (US, Canada) 1 [phone]

UK Toll Free 0808 238 9578

Brazil Toll Free 0800 761 0710

Argentina Toll Free 0800 444 0878

Chile Toll Free 123 002 059 10

Confirmation Number 45854428

This webcast will also be available for replay for approximately one year after the call.

In case you need further information, please contact:

Juan-Luis Carrasco, IR Manager at ([phone], Email: [e-mail]

Denisse Labarca, Head of IR at ([phone], Email: [e-mail]

John Wills, IR Analyst, at ([phone], Email: [e-mail]