Profile: Companhia Energetica de Minas Gerais Cemig (CIG)
22 Oct 2014
Companhia Energetica de Minas Gerais (CEMIG), incorporated on May 22, 1952, is a Brazil-based holding company mainly engaged in the generation, transmission and distribution of electricity. In the generation segment, CEMIG operates through hydroelectric plants, thermoelectric plants and wind farms. In the transmission segment, as of December 31, 2008, CEMIG’s transmission network was comprised of 38 substations with a total of 94 transformers and an aggregate transformation capacity of 15,583 Megavolt amperes. In the distribution business, as of December 31, 2008, the Company owned and operated 451,539 kilometers of distribution lines, supplying electricity to approximately 10 million customers. CEMIG is also engaged in the natural gas distribution business in Minas Gerais, through its subsidiary Companhia de Gas de Minas Gerais - GASMIG, as well as in the telecommunications business, through its subsidiary Cemig Telecomunicacoes SA - Cemig Telecom, which provides optical fiber and coaxial cable network.
Power Generation and Trading
As of December 31, 2009, the Company generated electricity at 54 hydroelectric plants, three thermoelectric plants and two wind farms, and had a total installed capacity of 6,624 megawatts. As of December 31, 2009, it owned and operated 3,085 miles of transmission lines and 281,756 miles of distribution lines. It holds concessions to distribute electricity in 96.7% of the territory of Minas Gerais. Eight of CEMIG’s hydroelectric plants accounted for approximately 81% of its installed electric generation capacity during the year ended December 31, 2009. CEMIG operates the Ipatinga thermoelectric plant, through its subsidiary Usina Termica Ipatinga S.A. The plant has an installed capacity of 40 megawatts, generated by two units and that uses blast furnace gas as fuel. The Company operates the Sa Carvalho hydroelectric power plant, located on the Piracicaba River in the municipality of Antonio Dias in the State of Minas Gerais, through its subsidiary Sa Carvalho S.A. The Company’s Rosal hydroelectric plant has an installed capacity of 55 megawatts. The Rosal plant is located on the Itabapoana River, which runs along the border between the states of Espirito Santo and Rio de Janeiro.
Cemig Capim Branco Energia S.A. is engaged in developing the Capim Branco Generating Complex in partnership with Companhia Vale do Rio Doce (CVRD), a mining company, Comercial e Agricola Paineiras, an agricultural company, and Companhia Mineira de Metais (CMM) a metallurgical company. Horizontes Energia S.A. was formed by the Company to generate and trade electricity, through the commercial operation of its hydroelectric plants: the Machado Mineiro Power Plant (located on the Pardo River in the municipality of Ninheira in the State of Minas Gerais with an installed capacity of 1.72 megawatts); the Salto do Paraopeba Power Plant (located on the Paraopeba River in the town of Jeceaba in the State of Minas Gerais with an installed capacity of 2.37 megawatts); the Salto Voltao Power Plant (located on the Chapecozinho River in the town of Xanxere in the State of Santa Catarina with an installed capacity of 8.2 megawatts), and the Salto do Passo Velho Power Plant (located on the Chapecozinho River in the town of Xanxere in the State of Santa Catarina with an installed capacity of 1.8 megawatts), as well as other generating projects.
Usina Termeletrica Barreiro S.A. holds the assets of the Barreiro thermoelectric power plant. The Irape Hydroelectric Power Plant, which has an installed capacity of 360 megawatts, is located on the Jequitinhonha River, in northern Minas Gerais. The Company’s wind farm, Morro do Camelinho is located in Gouveia, a municipality in northern Minas Gerais. It has a total generation capacity of 1 megawatt, powered by four turbines with a capacity of 250 kilowatts each. Central Eolica Praia do Morgado S.A is located in the county of Acarau, in the State of Ceara. Central Eolica Volta do Rio S.A is located in the county of Acarau, in the State of Ceara.
The Company’s transmission business consists of the bulk transfer of electricity from the power plants where it is generated to the distribution system, which carries the electricity to final consumers, and others consumer agents connected directly in the transmission grid. Its transmission system comprises transmission lines and step-down substations with voltages ranging from 230 kilovolt to 500 kilovolt. As of December 31, 2009, the Company’s transmission network in Minas Gerais consisted of 1,352 miles of 500 kilovolt lines, 1,244 miles of 345 kilovolt lines and 485 miles of 230 kilovolt lines, as well as 35 substations with a total of 94 transformers and an aggregate transformation capacity of 15,506 megavolt ampere. The Company transmits the energy that it generates and the energy that it purchases from Itaipu and other sources, as well as the energy for the interconnected power system. On December 31, 2009, the Company also had 13 industrial consumers, to whom it transported 4,103 gigawatt hour directly with high voltage energy, through their connections to its transmission lines. Nine of these industrial consumers accounted for approximately 66.9% of the transported total volume of electricity. The Company also transmits energy to distribution systems, through the south/southeast-linked system of the grid.
Distribution and Purchase of Electric Power
The Company’s distribution operation consists of electricity transfers from distribution substations to final consumers. Its distribution network consists of a network of overhead and underground lines and substations with voltages lower than 230 kilovolts. The Company supplies electricity to industrial consumers at the higher end of the voltage range and residential and commercial consumers at the lower end of the range.
The Company holds approximately 55% of Gasmig and Petrobras, through its subsidiary, Gaspetro-Petrobras Gas S.A., holds 40%. In 2009, Gasmig supplied approximately 1.5 million cubic meters of natural gas per day to 276 consumers, including 175 industrial and commercial clients, 93 retail distribution stations for natural gas vehicles, two thermal power plants and six distributors of compressed natural gas (CNG). Gasmig supplied 0.2 million cubic meters of gas per day to thermal power plants and 1.3 million cubic meters of gas per day to retail consumers. In addition to, Gasmig also supplied eight customers with re-gasified liquefied natural gas (LNG). In 2009, Gasmig distributed approximately 4.1% of all natural gas distributed in Brazil.
The Company’s owns a 99.9% interest in Cemig Telecomunicacoes S.A., which has an optical fiber-based long-distance communications backbone installed along the Company’s power grid using optical ground wire cables. This communications backbone is connected to an access network that is based on hybrid fiber-coaxial cable technology and is deployed along its power grid. The telecommunication services provided by Cemig Telecomunicacoes S.A., through its network are signal transportation and access, both for point-to-point and point-to-multipoint applications, delivered to telecommunications operators and Internet service providers on a channel basis. Cemig Telecomunicacoes S.A. also provides intra-company data transmission services to the Company. CEMIG provides consulting services to governments and public utility companies in the electricity industry. The Company has a 100% interest in Efficientia S.A.
Companhia Energetica de Minas Gerais Cemig
Av Barbacena 1200, SANTO AGOSTIN
BELO HORIZONTE 30190131