LIGHT S.A.

Corporate Taxpayer's ID (CNPJ/MF): 03.378.521/0001-75

Company Registry (NIRE): 33.300.263.16-1

Publicly Held Company

Material Fact

Light S.A. ("Company"), under the terms of Instruction No. 358, dated as of January 3, 2002 of the Brazilian Securities Exchange Commission (Comissão de Valores Mobiliários - "CVM"), as amended, informs its shareholders and the market in general that, as a result of the news published on this date, at 4:11 p.m., by Valor Econômico entitled "Cemig dá partida em processo de follow-on da Light" ("Cemig starts follow-on process"), the Company reiterates the material facts disclosed on August 16, 2018 and September 21, 2018, respectively by Light and Companhia Energética de Minas Gerais - CEMIG ("Cemig"). Beyond that, the Company clarifies there is no definition regarding the execution of any operation until today, and the potential transaction is subject to the Company deliberative organs approvals and the market conditions.

The Company will keep its shareholders and the Market informed in accordance to applicable legislation and regulation.

Rio de Janeiro, October 19th, 2018.

Luis Fernando Paroli Santos CEO, Investor Relations Officer

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Light SA published this content on 19 October 2018 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 20 October 2018 00:07:02 UTC