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Material Fact - IB’s stake acquisition

Material Fact - IB’s stake acquisition

Transmissora Aliança de Energia Elétrica S.A. ("Company" or Taesa"), pursuant to Paragraph 4 of Article 157 of Law No. 6,404, and CVM Instruction No. 358/02, as
amended by CVM Instructions No. 369/02, hereby announces to its shareholders, the market in general and other stakeholders, in addition to the provisions of the material
fact disclosed on November 17, 2017, that, after obtaining the consent of the Administrative Council for Economic Defense (CADE) and the National Electric Energy Agency (ANEEL), the acquisition of 24.95% by Taesa and of 50.10% by its affiliate company, Empresa Norte de Transmissão de Energia S.A. ("ENTE"), (together, "Buyers"), of the share capital of IB SPE Transmissora de Energia Elétrica S.A. ("IB") was concluded today (the "Acquisition" or "Transaction").

IB is a special purpose company, which holds the concession for the public energy transmission service for the implementation and exploitation of the Electric Energy Transmission Line, namely:

Taesa paid the amount of R$ 3,514,476.38 (three million, five hundred and fourteen thousand, four hundred and seventy six reais and thirty eight cents) while ENTE paid the amount of R$ 7,057,124.91 (seven million, fifty seven thousand, one hundred twenty four and ninety one cents) referred to the effective payment for the acquired shares including the proven and reasonably incurred costs and expenses directly related to the implementation of the object regarding the concession agreement (proportionately weighted by the stake acquired by Taesa and ENTE in the IB share capital) ("Acquisition Price"). The amounts mentioned above are already adjusted by the variation of the CDI rate calculated between August 30, 2017, and the present date.

With the conclusion of the Transaction, Taesa directly and indirectly owns 49.99% of IB, whose project (Lot M) will connect the Paraguaçú (Lot 3) and Aimorés (Lot 4)
concessions to the National Interconnected System (SIN), reinforcing its growth strategy with attractive returns and its commitment to cash generation, as well as consolidating its strategic positioning as one of the largest energy transmission companies in the country.

Rio de Janeiro, March 26, 2018

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