San Diego Gas & Electric (SDG&E) digs doling out energy in sandy Southern California. The company is a regulated utility that serves 1.4 million electricity customers and more than 840,000 natural gas customers in San Diego County and a portion of southern Orange County. The electric utility segment owns about 22,200 miles of power distribution lines, which serve about 25 communities; its 1,870 miles of transmission lines are managed by the California Independent System Operator. SDG&E also has limited power generation operations (it owns or contracts more than 5,500 MW of generating capacity). The gas utility operates almost 170 miles of transmission pipelines and about 8,420 miles of distribution mains.

Nature Group (formerly Nature Technology Solutions) provides wastewater treatment services to the oil, shipping, and offshore industries. Its technologies treat various types of industrial, marine, and oil industry waste streams, including using an environmental-friendly additive that helps remove hydrocarbons in oily wastewater. It helps operate port treatment plants in Gibraltar and Tananger, Norway, and a sewage treatment plant in Gibraltar; it is also involved in decommissioning refineries, installing treatment plants, and treating wastewater on offshore rigs.

Public Utility District No. 2 of Grant County, Washington, probably used up its initial budget before it could hire a team of branding and identity consultants. But a dour name does not stop the power provider (commonly referred to as Grant County PUD) from operating two hydroelectric power plants on the Columbia River (2,000 MW of generating capacity) and distributing electricity to the 40,000 residents of Washington's Grant County. The district, which was formed in 1938 and went into operation in 1942, also sells power to twelve Pacific Northwest utilities and is developing a residential fiber-optic data network.

Calvalley Petroleum searches below the plateau for fuel for its customers. The company focuses on exploring for and producing oil and natural gas at Block 9 in the Republic of Yemen. The company, which has about 16 working wells (more than 50 have been drilled), produces some 5,000 barrels of oil each day. Its subsidiary Calvalley Petroleum (Cyprus) Ltd. is the operator of the property, which includes about 552,000 acres of land in the Sayun-Masila basin. Calvalley Petroleum has a net proved plus probable reserves of 7.8 billion barrels of oil equivalent.

British Columbia Hydro and Power Authority, which operates as BC Hydro, distributes electricity to the 1.8 million residential and business customers. The province-owned utility owns more than 46,500 miles of transmission and distribution lines, and it operates hydroelectric and fossil-fueled power plants about 11,350 MW of generating capacity. Subsidiary Powerex markets and trades energy throughout North America. To increase efficiencies in green power production, in 2010 BC Hydro consolidated its transmission operations with those of the province-owned British Columbia Transmission. A Crown corporation owned by British Columbia, BC Hydro is regulated by British Columbia Utilities Commission.

MidAmerican Energy Holdings reaches farther than its name implies. The company generates, transmits, and distributes electricity and natural gas to 6.9 million customers across the US and the UK, primarily through subsidiaries MidAmerican Energy Company, PacifiCorp, and CE Electric UK. UK regional distribution subsidiaries Northern Electric and Yorkshire Electricity serve about 3.8 million electricity customers. MidAmerican Energy Holdings also has independent power production; real estate (HomeServices of America); and gas exploration, production, and pipeline operations (Kern River Gas Transmission and Northern Natural Gas). Warren Buffett's Berkshire Hathaway controls the company.

National Thermal Power Corporation (NTPC), thankfully generates enough electricity to run a lot of air conditioners. State-run NTPC, which generates almost 29% of India's power supply, has 22 coal and gas-fired power plants and interests in four more through its SAIL Power Supply joint venture. The company's plants (including joint ventures) have a combined capacity of more than 30,240 MW and feed distribution grids throughout India; prices are determined by India's Electricity Act. NTPC also offers global power consulting and engineering and construction services. India's government owns nearly 90% of NTPC.

When the Blue Moon of Kentucky is not enough to light the way, East Kentucky Power Cooperative is there to help. The company generates and transmits electricity to 16 local distribution cooperatives, which in turn provide electricity to 519,000 customers in 87 counties in eastern Kentucky. East Kentucky Power operates more than 2,900 miles of transmission lines, and generates most of its electricity from primarily fossil-fueled power plants with more than 2,500 MW of capacity. The company also operates landfill-gas generation facilities and purchases hydroelectric power from the Southeastern Power Administration.

Coast Electric Power Association when it comes to providing residents in three southern Mississippi counties with electricity. The utility uses a 6,400-mile distribution network to serve its more than 76,000 members (the great majority or which are residential customers) in Hancock, Pearl River, and Harrison counties. Coast offers electronic fund transfer and average monthly payment plans and rebates on energy efficient home improvements. The utility's power is generated by South Mississippi Electric Power, an association of Coast and 10 other cooperatives. It partners with Touchstone Energy Cooperatives.

China Hydroelectric Corporation, through its subsidiaries, engages in the acquisition, ownership, development, and operation of hydroelectric power projects in the People's Republic of China. The company sells electricity to the power grids. It owns 12 operating hydroelectric power projects, as well as has a controlling interest in 1 operating hydroelectric power project in the provinces of Zhejiang, Fujian, Yunnan, and Sichuan. As of December 31, 2009, the company has an installed capacity of 376.6 MW. China Hydroelectric Corporation was founded in 2006 and is headquartered in Beijing, the People's Republic of China.

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