Portsmouth Water Limited serves an area of the UK extending from South East Hampshire to West Sussex, and from the River Meon to the River Arun. Portsmouth Water supplies about 160 million liters of water per day. Its 301,200 customers include industries, government establishments, and commercial businesses, as well as a residential population of 657,000. The company operates a 3,270-km network of water mains and about 20 treatment works. About 85% of the company's supply comes from groundwater sources.

UIL Holdings, parent of electric utility The United Illuminating Company (UI), hopes its well regulated business will result in regular revenue growth. The public utility distributes electricity to 325,000 customers in southwestern Connecticut. Its service area, largely urban and suburban, includes the principal cities of Bridgeport (population 137,000) and New Haven (population 124,000) and their surrounding areas. UIL Holdings has teamed up with NRG Energy to form GenConn Energy LLC, a joint venture that focuses on developing new power generation facilities in Connecticut. In 2010 the company acquired three gas utilies in New England from IBERDROLA USA for $1.3 billion.

Sometimes the sunshine state just isn't bright enough, and that's when Florida Power (doing business as Florida Power) really shines. The utility transmits and distributes electricity to 1.6 million customers and oversees more than 10,000 MW of generating capacity from interests in 14 nuclear and coal-, oil-, and gas-fired power plants. Additionally, Florida Power purchases about 20% of the energy it provides. The company is interconnected with 22 municipal power systems and with nine rural electric cooperative systems. Florida Power, a subsidiary of holding company Progress Energy, also sells wholesale power to other utilities and marketers.

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.

Union Gas has a habit of bringing natural gas and energy consumers together. The utility, a subsidiary of midstream maven Spectra Energy transmits and distributes natural gas to more than 1.3 million residential and business customers in more than 400 communities throughout most of the Canadian province of Ontario. It also provides gas transportation and storage services for other utilities and businesses in Canada and the US. Union Gas operates 3,000 miles of transmission pipeline, 37,000 miles of distribution main and service pipeline, and 22 underground storage facilities.

The rural distribution cooperative operates nearly 5,300 miles of transmission and distribution lines. Adams-Columbia Electric was formed through the merger of Adams-Marquette Electric Cooperative and Columbus Rural Electric Cooperative in 1987. The utility expanded further through its 1992 acquisition of Waushara Electric Cooperative. The cooperative covers a 2,500 sq. ml. geographic service area.With a name that harkens back to Christopher Columbus and the Founding Fathers, Adams-Columbia Electric Cooperative provides power to more than 36,000 member-owners in 12 counties in central Wisconsin.

EcoWater Systems is in a pristine spot. The company manufactures commercial and residential water treatment systems. It sells its products through a network of more than 1,400 dealers, wholesalers, and private-label retailers. Products include water refiners, conditioners, and purifiers, and innovations such as reverse osmosis drinking water systems. Founded in 1925, EcoWater Systems is a member of Berkshire Hathaway's Marmon Group and maintains its autonomous management. In addition to the US, the company operates in Canada, the UK, Europe, and China.

Falck Group makes its money through windy days, dead plants, and companies looking for a loan. The company maintains bioenergy and wind energy operations through publicly traded subsidiary Actelios. It also offers financial services to partners and suppliers through subsidiary Riesfactoring. Though it operates primarily in Italy, Falck's wind energy business is active in France, Spain, and the UK as well. The company was founded in 1906 by Giorgio Enrico Falck, a third-generation ironworker.

Wisconsin Energy Corporation company's utilities provide electricity to more than 1.1 million customers and natural gas to more than 1 million customers in eastern and northern Wisconsin and Michigan's Upper Peninsula. It also serves 465 steam customers in downtown Milwaukee. Wisconsin Energy has about 5,500 MW of generating capacity, primarily from coal-fired and nuclear-powered plants. The company's primary utility subsidiaries, Wisconsin Gas and Wisconsin Electric, operate together as We Energies. Other operations include real estate development and renewable energy technology.

Community Energy is working to create greener communities in the northeastern and midwestern US. Through supply agreements with alternative energy generation companies and sales agreements with electricity distribution utilities, Community Energy, a unit of industry leader IDERBROLA RENEWABLES, offers green energy solutions to major businesses and governments as well as to more than 110,000 residential and small-business customers. The company is also involved in the development of wind farms and supplies power directly to end-users. Community Energy, which operates under the NewWind Energy brand, purchases power primarily from wind-powered generation facilities; it also markets solar and hydroelectric energy.

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