Centrais Eletricas Brasileiras S A : Market Announcement - 08.12.2020 - Eletronuclear

MARKET ANNOUNCEMENT

CENTRAIS ELÉTRICAS BRASILEIRAS S/A

CNPJ: 00.001.180/0001-26 | NIRE: 533.0000085-9

PUBLIC COMPANY

Centrais Elétricas Brasileiras S/A ("Company" or "Eletrobras") (B3: ELET3, ELET5 & ELET6; NYSE:

EBR & EBR.B; LATIBEX: XELT.O & XELT.B) hereby informs its shareholders and the market in general that on June 22, 2020, according to schedule, the stoppage for maintenance and refueling of nuclear fuel was started at the Angra 2 Plant ("Angra 2"), of the subsidiary Eletrobras Termonuclear SA - Eletronuclear S.A. ("Eletronuclear"), with initial expected duration of 22 (twenty two) days. At each refueling, about one third of the reactor's fuel elements are replaced.

During the inspections carried out at this stop, an unexpected surface oxidation was detected in the fuel elements loaded in the last operating cycle in the coating of the tubes containing the enriched uranium tablets, which will require rigorous inspection tests to evaluate this event.

It is worth mentioning that this incident, at none time, compromised the safety and performance of the Angra 2 plant, which has operated continuously for 13 months, having even broken its own production record on June 19, 2020, with the mark of 200 million MWh generated since 2001.

The tests will be carried out by the company responsible for the plant's project, which will depend on the arrival of the necessary equipment and foreign technicians at the nuclear power plant, with a start forecast for the second half of September 2020. The objective is to determine the causes of oxidation and check the feasibility of using these fuel elements for another operational cycle, as planned. All results will be submitted for analysis by the licensing body, the National Nuclear Energy Commission ("CNEN").

In order to make the operation of the Angra 2 Plant feasible in the shortest possible time and following all safety protocols, Eletronuclear is replacing all 52 (fifty-two) fuel elements, which will still be inspected, for the next operation cycle. The replacement of these fuel elements is being done in part by 24 (twenty four) new fuel elements that were already ready for use at the Angra Plant 3 and 28 (twenty eight) used fuel elements that were stored in the fuel pool used (PCU) of Angra 2. This new configuration of refueling the reactor core will allow the operation of the Angra 2 plant for an approximate cycle of 9 (nine) months.

Eletronuclear's financial statements reported on the base date of June 30, 2020 do not contain the effects of these events, since Eletronuclear will still assess the feasibility of the full use of the 52 (fifty-two) fuel elements to be inspected. It was also not possible to measure the impacts of the loss of revenue that Eletronuclear will incur due to the increase in days of unplanned interruption.

The Company informs that Eletronuclear has already obtained CNEN's approval for the loading of the reactor nucleus, which occurred through Official Letter 97/2020-DRS/CNEN of August 5, 2020, and, until the date of approval of the financial statements, awaits the final approval of the Nuclear and Thermohydraulic Project Report (RPNT) for the return of its operation.

Internet:www.eletrobras.com/elb/ri

E-mail:[e-mail]

Address: Rua da Quitanda - 9th floor. 20090-070,Centro. Rio de Janeiro - RJ Phone Number: (21) 2514-6333 /4627

EBR & EBR.B
LISTED	ELET3 &

NYSE

This document may contain estimates and forecasts that are not statements of fact that occurred in the past but reflect our management beliefs and expectations and may constitute future events' forecasts and estimates under Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. The words "believe", "may", "estimate", "continue", "anticipate", "intend", "expect" and related words are intended to identify estimates that necessarily involve risks and uncertainties, known or unknown . Known risks and uncertainties include, but are not limited to: general economic, regulatory, political and commercial conditions in Brazil and abroad, changes in interest rates, inflation and value of the Real, changes in volumes and the pattern of use of electricity by consumer, competitive conditions, our level of indebtedness, the possibility of receiving payments related to our receivables, changes in rainfall and water levels in the reservoirs used to operate our hydroelectric plants, our financing and capital investment plans, existing and future government regulations , and other risks described in our annual report and other documents filed with CVM and SEC. Estimates and forecasts refer only to the date they were expressed and we assume no obligation to update any of these estimates or forecasts due to the occurrence of new information or future events. Future results of the Company's operations and initiatives may differ from current expectations and the investor should not rely solely on the information contained herein. This material contains calculations that may not reflect accurate results due to rounding.

The Company expects to return the Angra 2 plant to the National Interconnected System (SIN) at the beginning of the second half of August 2020.

Rio de Janeiro, August 12, 2020

Elvira Cavalcanti Presta

CFO and Investor Relations Officer

Internet:www.eletrobras.com/elb/ri

E-mail:[e-mail]

Address: Rua da Quitanda - 9th floor. 20090-070,Centro. Rio de Janeiro - RJ Phone Number: (21) 2514-6333 /4627

EBR & EBR.B
LISTED	ELET3 &

NYSE

This document may contain estimates and forecasts that are not statements of fact that occurred in the past but reflect our management beliefs and expectations and may constitute future events' forecasts and estimates under Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. The words "believe", "may", "estimate", "continue", "anticipate", "intend", "expect" and related words are intended to identify estimates that necessarily involve risks and uncertainties, known or unknown . Known risks and uncertainties include, but are not limited to: general economic, regulatory, political and commercial conditions in Brazil and abroad, changes in interest rates, inflation and value of the Real, changes in volumes and the pattern of use of electricity by consumer, competitive conditions, our level of indebtedness, the possibility of receiving payments related to our receivables, changes in rainfall and water levels in the reservoirs used to operate our hydroelectric plants, our financing and capital investment plans, existing and future government regulations , and other risks described in our annual report and other documents filed with CVM and SEC. Estimates and forecasts refer only to the date they were expressed and we assume no obligation to update any of these estimates or forecasts due to the occurrence of new information or future events. Future results of the Company's operations and initiatives may differ from current expectations and the investor should not rely solely on the information contained herein. This material contains calculations that may not reflect accurate results due to rounding.