The state-owned utility has 1,480 MW of generating capacity from hydroelectric and fossil-fueled power plants and operates a 2,000-mile transmission system. Grand River Dam Authority also manages two lakes.It took the dam authority of the State of Oklahoma to create the body that would dam the Grand River. The resulting power provider, the Grand River Dam Authority, is responsible for supplying wholesale electricity to municipal and cooperative utilities and industrial customers in its service territory, which encompasses 24 counties in northeastern Oklahoma.

Ergon (named after the Greek word for work) has it covered. Ergo, Ergon operates in six major business segments: asphalt and emulsions; information technology (embedded computing); oil and gas (exploration and production, retail and wholesale sales); real estate; refining and marketing; and transportation and terminaling. In addition to providing a range of petroleum products and services, the company manufactures and markets computer technology services and sells road maintenance systems, including emulsions and special coatings. Ergon also provides truck, rail, and marine transport services and sells residential and commercial real estate properties.

Seeking fame and fortune in and outside Finland, energy powerhouse Fortum generates electric power across the region. In the Baltic Rim its power plants create electricity (more than 10,980 MW of generation capacity), and heat. Fortum distributes electricity to 1.6 million customers (primarily in Estonia, Finland, Norway, and Sweden). The company also has significant operations in a growth area, Russia, including 2,785 MW of power generation capacity. (Russia accounted for about 9% of Fortum's total revenues in 2009). Fortum has divested its oil and engineering assets in order to focus on its core power and heating businesses.

Clean Energy Fuels Corp., together with its subsidiaries, provides natural gas as an alternative fuel for vehicle fleets in the United States and Canada. It designs, builds, finances, and operates fueling stations; and supplies compressed and liquefied natural gas. Clean Energy Fuels Corp. also produces renewable biomethane, which could be used as vehicle fuel. In addition, it provides natural gas conversions, alternative fuel systems, application engineering, service and warranty support, and research and development for natural gas vehicles. As of December 31, 2009, the company served approximately 390 fleet customers operating 17,790 natural gas vehicles in public transit, refuse hauling, airports, taxis, seaports, and regional trucking markets. It owned and operated 196 natural gas fueling stations in Arizona, California, Colorado, the District of Columbia, Florida, Georgia, Idaho, Maryland, Massachusetts, Nevada, New Jersey, New Mexico, New York, Ohio, Oklahoma, Texas, Virginia, Washington, and Wyoming; and British Columbia and Ontario, Canada. Clean Energy Fuels Corp. was incorporated in 2001 and is headquartered in Seal Beach, California.

Sacramento Municipal Utility District (SMUD) doesn't want its name to be mud. One of the largest locally owned electric utilities in the US, SMUD serves about 592,000 residential and commercial customers in California's Sacramento and Placer counties. The utility generates half of its electricity (its 1,300-MW capacity is derived primarily from hydroelectric and cogeneration power plants) and buys the rest. SMUD also sells power to wholesale customers, and has one of the US's largest solar energy distribution systems. SMUD operates more than 10,200 miles of transmission and distibution lines across its 900-sq.-mi. service area.

Through its regulated utility subsidiaries, Aquarion distributes water to more than 180,000 homes and businesses (or about 580,000 people) in some 39 communities in Connecticut, Massachusetts, and New Hampshire. It is one of the 10 largest investor-owned utilities in the US. The company's Aquarion Services unit provides contract management of municipal water and wastewater systems, along with engineering and management consulting services and consumer water line protection plans. In 2007 UK-based Kelda Group sold control of Aquarion to Australia's Macquarie Bank for $860 million.

Vattenfall, which provides power to 4.7 million retail customers in Belgium, Denmark, Finland, Germany, the Netherlands, Poland, Sweden, the UK. The Nordic region's largest utility group has about 33,000 MW of generating capacity in the region from interests in nuclear, hydroelectric, wind, and fossil-fueled power plants; it also markets wholesale energy and operates district heating facilities. State-owned Vattenfall is focusing on its growing its presence across Europe. In 2009 it acquired Belgium-based Nuon (renamed Business Group Benelux) in a $10.9 billion deal, boosting its position as a major European energy group

Southern Company isn't just whistling Dixie. The holding company is one of the largest electricity distributors in the US. It operates regulated utilities Alabama Power, Georgia Power, Gulf Power, and Mississippi Power, which combined have a generating capacity of more than 42,900 MW and serve more than 4.4 million electricity customers in the southeastern US. The good ol' power company also has energy marketing operations, and it provides energy consulting and management services for businesses and institutions. Through its Southern LINC Wireless unit, it provides wireless communications services in its US utility territory; its Southern Telecom unit offers wholesale fiber-optic services.

Plambeck Neue Energien develops and operates renewable power wind farms in Germany and other European countries. The company has developed 74 wind farms in Germany. Plambeck developed its first wind farm -- Windpark Marschland -- in 1995. The company bought SSP Technology A/S, a maker of light and efficient rotor blades based in Denmark. Plambeck has sold its solar business in order to focus on its wind farm operations. In 2006 the company announced plans to join with Evelop to develop an 80-wind turbine offshore wind farm project, Gode Wind I, in Germany. In 2008 Plambeck established a subsidiary in the US.

Through its subsidiaries, the province-owned company transmits and distributes electricity to 1.3 million residential and commercial customers (including municipal utilities) in Ontario. Its primary utility subsidiaries are Hydro One Networks (transmission and distribution) and Hydro One Brampton Networks (electricity distributor to urban areas). Hydro One Telecom markets the group's fiber-optic capacity (broadband) to businesses, and Hydro One Remote Communities supplies energy to more than 20 remote areas in Ontario.

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