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Energy Co of Minas Gerais
Companhia Energética de Minas Gerais was constituted in 1952 by then-governor Juscelino Kubitschek to consolidate and expand the state's electrical...
Energy Co of Minas Gerais
Companhia Energética de Minas Gerais was constituted in 1952 by then-governor Juscelino Kubitschek to consolidate and expand the state's electrical infrastructure. It now functions as a publicly traded, mixed-capital corporation with the State of Minas Gerais as its controlling shareholder. The company generates electricity from more than 60 hydroelectric, wind, and solar plants, owns approximately 7,000 kilometers of transmission lines, and distributes power directly to the majority of its home state's territory. CEMIG's generation mix is predominantly hydroelectric, with the São Simão and Emborcação plants among its largest assets. In recent years, the firm has diversified into wind and solar through its CEMIG SIM and CEMIG GT subsidiaries. Its distribution arm, CEMIG D, holds a 30-year concession covering the industrial heartland of Minas Gerais, including the Belo Horizonte metropolitan region. The company also operates in gas distribution through a minority stake in Gasmig. Beyond domestic operations, CEMIG has historically held interests in transmission assets in Chile through its stake in Transchile Charrúa Transmission. CEMIG reported total assets of roughly R$55 billion and a market capitalization near R$30 billion on the Brazilian stock exchange (B3) as of 2024. Its workforce exceeds 4,500 employees. The firm operates through a holding structure with subsidiaries focused on generation, transmission, distribution, and energy trading. In January 2024, CEMIG launched an initiative to accelerate its migration to the free energy market, targeting corporate and industrial clients under new regulatory frameworks. Structurally, CEMIG sits at the intersection of state development policy and publicly listed corporate governance. Its mixed-capital model — a standard for Brazil's large utilities — subjects it to both political electoral cycles and the transparency demands of B3's Novo Mercado listing segment. This dual accountability creates a distinct investment profile compared to wholly private power generators or fully nationalized entities elsewhere in Latin America.
General information
Firm type
Asset Manager
Year founded
1952
AUM
Undisclosed
Location
Region
Latin America
Country
Brazil
City
Belo Horizonte
Corporate office
Belo Horizonte, Minas Gerais, Brazil
Principals
Reynaldo Passanezi Filho
CEO
Sector focus
Frequently asked questions
What is CEMIG's governance structure and who controls investment decisions?
CEMIG is a mixed-capital corporation (sociedade de economia mista) with the State of Minas Gerais holding the majority of voting shares. Strategic investment decisions, including large capital expenditures and M&A, are approved by the Board of Directors and the Executive Board, led by the CEO. The controlling shareholder's fiduciary duties are governed by both Brazilian corporate law and CEMIG's bylaws, with minority shareholders protected under B3's Novo Mercado rules.
How does CEMIG's generation portfolio break down by source?
The generation mix remains overwhelmingly hydroelectric, anchored by large plants such as São Simão, Emborcação, and Nova Ponte. CEMIG has expanded into wind and solar through dedicated subsidiaries — CEMIG SIM handles solar distributed generation, while CEMIG GT focuses on centralized renewables. The company also holds transmission and gas-distribution interests that complement the core power-generation portfolio.
Does CEMIG operate outside of Brazil?
CEMIG has historically held international transmission assets, most notably in Chile through its interest in Transchile Charrúa Transmission. The company has periodically signaled openness to further transmission investments in neighboring Latin American markets, though its core regulated distribution and generation operations remain concentrated in Minas Gerais.
Is CEMIG's revenue model purely regulated, or does it include merchant exposure?
CEMIG's distribution business operates under a regulated concession with tariff adjustments set by ANEEL, Brazil's national electricity regulator. Its generation and trading subsidiaries participate in the free energy market, selling uncontracted capacity to corporate and industrial offtakers. In early 2024, the firm accelerated efforts to capture market share in the expanding free energy segment, which now represents a growing piece of its revenue mix.
How is CEMIG different from other Brazilian utility holding companies?
CEMIG combines a dominant, vertically integrated position across Minas Gerais — Brazil's third-largest state economy — with a publicly listed Novo Mercado governance standard. Most state-controlled peers in Latin America operate with lower free-float requirements and weaker minority protections. The company's legacy hydro portfolio also provides a low-cost generation base that few competitors in Brazil's southeastern grid can match.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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