Cemig Files 6-K: GSF Credit Auction Win & Shareholder Letter

Ticker: CIG-C · Form: 6-K · Filed: Oct 27, 2025 · CIK: 1157557

Energy CO Of Minas Gerais 6-K Filing Summary
FieldDetail
CompanyEnergy CO Of Minas Gerais (CIG-C)
Form Type6-K
Filed DateOct 27, 2025
Risk Levelmedium
Pages14
Reading Time17 min
Key Dollar Amounts$200 million
Sentimentneutral

Sentiment: neutral

Topics: foreign-issuer, regulatory-filing, auction, concessions

TL;DR

Cemig's 6-K drops: won GSF credit auction for concessions, got shareholder letter, and released earnings. Big stuff for Brazil's power sector.

AI Summary

Energy Company of Minas Gerais (Cemig) filed a 6-K report on October 27, 2025, for the period ending December 31, 2025. The filing includes material facts from August 1, 2025, detailing Cemig's win in a CCEE auction for GSF credits related to concession extensions, and an official letter received from its controlling shareholder. An earnings release is also included.

Why It Matters

This filing provides updates on Cemig's strategic initiatives, including securing GSF credits for concession extensions, which could impact future revenue and operational stability.

Risk Assessment

Risk Level: medium — The filing contains information about auction wins and shareholder communications, which can influence investor sentiment and the company's strategic direction.

Key Players & Entities

FAQ

What specific GSF credits did Cemig win in the CCEE auction?

The filing references a Material Fact dated August 1, 2025, stating Cemig won a CCEE auction for GSF credits for concession extensions, but specific details on the credits are not provided in this summary.

What was the content of the official letter from the controlling shareholder?

The filing lists an 'Official Letter Received from the Controlling Shareholder' dated August 1, 2025, as an item, but its specific content is not detailed in the provided text.

What is the primary business of Energy Company of Minas Gerais?

The company is in the 'ELECTRIC SERVICES' sector, with SIC code 4911.

When is the fiscal year end for Energy Company of Minas Gerais?

The fiscal year end is December 31.

What form is this SEC filing?

This is a Form 6-K, a report of foreign private issuer.

Filing Stats: 4,208 words · 17 min read · ~14 pages · Grade level 8.7 · Accepted 2025-10-27 11:48:09

Key Financial Figures

Filing Documents

Forward-Looking Statements

Forward-Looking Statements This report contains statements about expected future events and financial results that are forward-looking and subject to risks and uncertainties. Actual results could differ materially from those predicted in such forward-looking statements. Factors which may cause actual results to differ materially from those discussed herein include those risk factors set forth in our most recent Annual Report on Form 20-F filed with the Securities and Exchange Commission. CEMIG undertakes no obligation to revise these forward-looking statements to reflect events or circumstances after the date hereof, and claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG By: /s/ Andrea Marques de Almeida . Name: Andrea Marques de Almeida Title: Vice President of Finance and Investor Relations Date: October 27, 2025 1. Material Fact dated August 1, 2025 – Cemig wins CCEE auction for GSF credits for concession extensions COMPANHIA ENERGÉTICA DE MINAS GERAIS - CEMIG PUBLICLY-HELD COMPANY CORPORATE TAXPAYER’S ID (CNPJ): 17.155.730/0001-64 COMPANY REGISTRY (NIRE): 31300040127 CEMIG GERAÇÃO E TRANSMISSÃO S.A. PUBLICLY-HELD COMPANY CORPORATE TAXPAYER’S ID (CNPJ): 06.981.176/0001-58 Company Registry (NIRE): 31300020550 MATERIAL FACT Cemig wins CCEE auction for GSF credits for concession extensions COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG (“CEMIG” or “Company”), a publicly-held company with shares traded on the stock exchanges of São Paulo and New York, and CEMIG GERAÇÃO E TRANSMISSÃO S.A. (“ Cemig GT ”), a publicly-held company and the wholly-owned subsidiary of CEMIG, hereby inform its shareholders and the market in general, under CVM Resolution 44/2021, that Cemig GT, Cemig PCH S.A., and the Queimado Consortium have won the auction of Generation Scaling Factor (“GSF”) credits for concession extensions, held today by the Electric Energy Trading Chamber (“CCEE”). As a result, the concessions for the Queimado (7 years), Pai Joaquim (7 years), and Irapé (3 years) hydroelectric power plants will be extended, with a total disbursement of approximately R$200 million. CEMIG reaffirms its commitment to keeping shareholders and the market in general informed about this matter, following the rules issued by the CVM and the leg

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