Companhia de Saneamento de Minas Gerais provides water supply (for about 12 million people) and sewage treatment services in more than 600 municipalities in the country's state of Minas Gerais. Founded in 1963, COPASA serves customers such as private companies, government agencies, and individuals. The government of Minas Gerais established the company under the name Companhia Mineira de Água e Esgotos in order to enforce the sanitation policy for the state. COPASA receives payment for its services in the form a tariff, which takes into account customers' consumption ranges, as well as inflation.

Global Environmental Energy Corporation wants to improve China and other countries by turning their unwanted waste into energy. It also searches for oil and gas and has interests in clean coal technology. The company's alternative power generation technology uses waste from industrial, municipal, and agricultural facilities to produce electricity for its clients. Subsidiary Biosphere Development Corp has sold nine Biosphere Process Systems in China and one in Lebanon. Subsidiary Sahara Petroleum Exploration explores for oil in North Africa but has been inactive since 2007.

Renegy Holdings (formerly Catalytica Energy Systems) was formed in the 2007 merger of Catalytica with the renewable energy divisions of NZ Legacy, a land and energy development firm. Among other ventures, Renegy has built a biomass power generation plant near Snowflake, Arizona, that came online in 2008. The company has long-term power purchasing agreements in place with Arizona Public Service and Salt River Project to buy biomass electricity from the Snowflake White Mountain Power plant. To save costs, in 2009 Renegy delisted its stock from the NASDAQ exchange.

Thermal Energy International ledgers are in the black. The company focuses on providing air pollution control, renewable energy, and waste heat recovery and other energy conservation products, primarily under the Flu-Ace and Dry-Rex names. It also offers complementary engineering services. Thermal Energy International is also developing a product that targets ozone generation, THERMALOZOMAX. Customers include auto manufacturers; coal-fired utilities; food makers; hospitals; primary metal, pulp and paper processors; and sewage-treatment facilities.

Southwest Gas Corporation engages in the purchase, distribution, and transportation of natural gas in portions of Arizona, Nevada, and California. As of December 31, 2009, Southwest Gas Corporation purchased and distributed, or transported natural gas to approximately 1,824,000 residential, commercial, and industrial customers. It also operates as an underground piping contractor that provides utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems. Southwest Gas Corporation was founded in 1931 and is headquartered in Las Vegas, Nevada.

Transportadora de Gas Del Sur S.A. engages in the transportation of natural gas, as well as production and commercialization of natural gas liquids primarily in Argentina. It operates approximately 8627 km long pipeline system. Transportadora company transports its natural gas to distribution companies, industries, traders, producers, and power plant operators. The company’s production and commercialization activities are conducted at the Cerri Complex located near Bahia Blanca. Its natural gas liquid products comprise ethane, propane, butane, and natural gasoline. It also provides midstream services, which consist of gas treatment, gas compression, and wellhead gas gathering services; removal services for impurities from the natural gas stream; and pipeline construction, operation, and maintenance services. In addition, the company offers telecommunication services for telephone operators and other corporate users. Its telecommunication network includes a microwave's digital system with synchronous digital hierarchy technology. Transportadora company was founded in 1992 and is based in Buenos Aires, Argentina. Transportadora de Gas Del Sur S.A. is a subsidiary of Compania de Inversiones de Energia S.A.

Korea Electric Power Corporation, an integrated electric utility company, engages in the generation, transmission, and distribution of electricity; and development of electric power resources in the Republic of Korea. As of December 31, 2009, the company’s transmission system consisted of approximately 30,257 circuit kilometers of lines of 765 kilovolts and others, including high voltage direct current lines, as well as 715 substations with an installed transformer capacity of 247,786 megavolt-amperes; and distribution system included approximately 99,630 megavolt-amperes of transformer capacity and approximately 8 million units of support with a total line length of 420,258 circuit kilometers. It provides electricity primarily to industrial, commercial, residential, educational, and agricultural customers. The company was founded in 1961 and is headquartered in Seoul, South Korea.

SCANA is cooking with (natural) gas and electricity all over South and North Carolina, and Georgia. The holding company serves 659,000 electricity customers and more than 1 million gas customers in the neighboring states through utilities South Carolina Electric & Gas (SCE&G), Public Service Company of North Carolina, and SCANA Energy (in Georgia). SCANA has an electric generating capacity of about 4,900 MW, derived from fossil-fueled power plants and hydroelectric and nuclear generation facilities. Unregulated operations include retail and wholesale energy marketing and trading, gas transportation, power plant management, fiber-optic telecommunications services, and appliance and HVAC maintenance.

Origin Energy focuses on integrating businesses within the energy industry, primarily in gas production, power generation, and energy retailing in Australia and New Zealand (through Contact Energy). It also invests in renewable energy technologies. The company is the #2 retailer of natural gas, electricity, and liquefied petroleum gas (LPG) in Australia with some 2 million customers (mostly in Victoria). Origin explores for and produces gas and oil in Australia and New Zealand and supplies markets in Australia, New Zealand, and the Pacific. The company focuses on the Bass and Otway Basins offshore Victoria, the Perth Basin in Western Australia, Queensland's coal seam gas areas, and New Zealand's Taranaki Basin.

Clearford Industries provides water and wastewater management and sewage treatment services throughout North America. For rural areas the company's patented Small Bore Sewer technology obviates the need for a septic tank by using pipes with a narrow diameter -- as opposed to larger ones used in urban systems -- to transport waste from a residence to a wastewater treatment plant. In 2008 the company sold its Brooklin Concrete division, a leading producer of septic tanks in Ontario, to Armtec Limited Partnership.

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