ISA Energia files R$650m share offer, licenses Rio line
ISA Energia has launched a R$650 million share offer to fund an asset swap rather than its newly licensed R$2.7 billion transmission line, highlighting the distinct funding mechanisms underpinning Brazil's grid expansion.
ISA Energia Brasil has filed for a R$650 million primary share issue while simultaneously securing a preliminary environmental licence for its R$2.7 billion Projeto Itatiaia transmission corridor. The dual moves advance the company's position in Brazil’s power grid build-out, though the equity proceeds are earmarked for balance-sheet restructuring rather than direct construction costs.
The offering will fund a negotiated asset swap with Axia Energia. ISA intends to acquire full ownership of IE Madeira while divesting its 49% stake in IE Garanhuns, with any remaining capital accelerating upgrades across its existing network. This transaction simplifies the company's holding structure, leaving the Itatiaia line to rely on standard project-finance mechanisms typical of regulated Brazilian concessions.
BTG Pactual is leading the sale of 22.2 million preferred shares at a reference price of R$29.25 each, with Bank of America, Bradesco BBI and Itaú BBA acting as co-coordinators. The deal is restricted to professional investors managing more than R$10 million and includes an upsize option that could push total proceeds to R$1.3 billion. An Extraordinary General Meeting is set for 24 July to raise the authorised capital limit, while controlling shareholder ISA Capital S.A. plans to subscribe for up to its 35.81% stake ahead of the 23 July pricing.
Itatiaia advances grid capacity
Projeto Itatiaia will transport renewable energy from Minas Gerais to the Rio de Janeiro metropolitan area, a major load centre dependent on long-distance power supply. The preliminary licence confirms environmental viability for the line, which is classified as priority infrastructure under Brazil’s Novo PAC programme. ANEEL requires the corridor to be operational by March 2029, with construction expected to create over 4,000 jobs.
The licence builds on ISA’s operational momentum in the country, where it has secured 19 transmission lots since 2016 representing R$15.8 billion in recognised investments. The company recently energised its R$3.85 billion Piraquê project 16 months ahead of schedule. As these assets come online, ISA projects its allowed annual revenue will increase by roughly R$2.1 billion in the 2025/2026 cycle.
ISA’s capital raise coincides with a broader wave of power-sector equity issuance in Brazil during the second half of 2026. It follows Engie Brasil Energia’s larger R$8.36 billion follow-on, underscoring how Colombian-controlled ISA continues to treat Brazil as a primary growth market for infrastructure deployment.
