Viridian Group, through its main subsidiary, regulated regional electric company Northern Ireland Electricity (NIE), transmits and distributes power to about 793,000 homes and businesses in Northern Ireland. Its NIE Energy Supply unit is the regulated electricity supplier in Northern Ireland. Viridian is also involved in unregulated businesses, including retail power and natural gas marketing (Energia) and high-voltage electrical infrastructure contracting (Powerteam). It also participates in Ireland's electricity market through its Energia subsidiary, which deals in both retail and wholesale energy. In 2010 Irish power utility ESB Group acquired NIE from Viridian for $1 billion.

Pinnacle West Capital is at the peak of the energy pyramid in Arizona. It is the holding company for the state's largest electric utility, Arizona Public Service (APS), which transmits and distributes electricity to 1.1 million residential, commercial, and industrial customers throughout most of the state. The utility also has more than 6,280 MW of generating capacity. Through APS and other subsidiaries, Pinnacle West markets wholesale and retail power in Arizona and the western US. The company also develops and manages real estate and invests in energy ventures.

These electric cooperatives serve more than 750,000 residents, businesses, industries and farms in a 15,000 sq. ml. service area. It operates four electric power plants and a 1,450-mile trasmission system, and maintains the Tuttle Creek Reservoir in Southwest Indiana. Hoosier Energy is part of the Touchstone Energy network of electric cooperatives.Who's yer daddy? In terms of providing electricity, for many Indianans (and some residents of Illinois) that would be Hoosier Energy Rural Electric Cooperative, which provides wholesale electric power to 18 member distribution cooperatives in 48 central and southern Indiana counties, and 11 counties in southeastern Illinois.

TransCanada Corporation operates as an energy infrastructure company in North America. The company operates in two segments, Pipelines and Energy. The Pipelines segment develops and operates energy infrastructure, including natural gas pipelines, regulated gas storage facilities, and projects related to oil pipelines. As of December 31, 2009, its pipelines network extended approximately 60,000 kilometers tapping into various gas supply basins in North America. The Energy segment engages in the acquisition, development, construction, ownership, and operation of electrical power generation plants; the purchase and marketing of electricity; the provision of electricity account services to energy and industrial customers; and the development, construction, ownership, and operation of non-regulated natural gas storage in Alberta. As of December 31, 2009, its power generation plants had 11,700 megawatts of power generation capacity. TransCanada Corporation was founded in 1951 and is headquartered in Calgary, Canada.

Alkane Energy pursues the arcane task of extracting methane gas from abandoned coal mines in the UK and Germany for the dual purposes of direct supply to industrial clients and for on-site power generation. A renewable energy company, Alkane aims to reduce greenhouse gas emissions, through the capturing of coalbed methane and its conversion to energy. The company designs, builds, and services containerized methane treatment plants and electricity generation facilities that use biogas, landfill gas, sewage gas, and coal mine methane. Alskane operates seven biogas-to-electricity sites in the UK and one in Germany.

Public utility Green Mountain Power (GMP) lights up the hills of Vermont, supplying electricity to 95,000 customers in the state. The utility also markets wholesale electricity in New England. The company operates more than 4,720 miles of transmission and distribution lines and owns a minority stake in high-voltage transmission operator Vermont Electric Power (VELCO). GMP owns about 150 MW of capacity from hydroelectric and fossil-fueled power plants, but it purchases most of its power from other utilities. The company's long-term contracts with Vermont Yankee and Hydro-Quebec provide about 75% of GMP's power supply.

GeoSyntec Consultants provides services such as environmental management, geotechnical engineering, groundwater assessment and remediation, pollution prevention, and surface water management. The company operates from more than 30 offices, primarily in the US but also in Canada, Malaysia, and the UK. Its clients include Aerojet-General, AstraZeneca, Chevron, Delta Air Lines, FMC Corp., Georgia Power, Kimberly-Clark, Lockheed Martin, Pharmacia & Upjohn, and Shell Oil. Expanding its services in the water and natural resources segment, in 2010 Geosyntec acquired Rainwater Recovery, which focuses on rainwater harvesting technology.

Wolverine Power Supply Cooperative makes sure that that voracious consumer of electricity -- the American public -- gets the power its needs. The non-profit company is an electric generation and transmission utility that provides services to five member distribution cooperatives in Michigan. Wolverine Power Supply Cooperative monitors and operates 1,600 miles of bulk transmission lines and owns five power plants that generate 200 megawatts of capacity. It also maintains about 130 distribution substations and 36 transmission stations, as well as purchases power (including windpower energy) from other utilities and marketers to distribute to its customers.

Missouri Gas Energy delivers natural gas in the "Show-Me" state. The utility, an operating unit of national natural gas power player Southern Union, distributes natural gas to more than 500,000 customers in 155 cities and towns located in central and western Missouri. Its territory stretches from St. Joseph in the north to Joplin and neighboring areas in the south, and from the Kansas border east to Ozark (near Springfield). Missouri Gas Energy has facilities in St. Joseph, Lees Summit, Warrensburg, Joplin, Republic, Neosho, and Monett. The Missouri Public Service Commission oversees Missouri Gas Energy's operations.

Westar Energy wished upon a star, and the answer was -- "focus on power utility resources." Westar Energy has a generating capacity of more than 7,100 MW (mostly from fossil-fueled facilities) and serves about 685,000 electricity customers in Kansas through its utility subsidiaries. Westar Energy supplies power to 368,000 retail customers in central and northeast Kansas, and subsidiary Kansas Gas and Electric (KGE) supplies power to 317,000 retail customers in south-central and southeastern Kansas. The company operates 34,200 miles of transmission and distribution lines. It supplies wholesale electric power to more than 30 cities in Kansas and four electric cooperatives that serve rural areas.

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