New Braunfels Utilities is its namesake city's most powerful entity. The utility provides electric, water, and sewage services to New Braunfels, Texas, and nearby communities. Its electric system serves more than 28,200 customers via 700 miles of overhead and underground distribution lines. New Braunfels Utilities' water and sewer systems serve more than 21,600 water and almost 20,000 wastewater customers. The water system operates six groundwater wells over the Edwards Aquifer, as well as an 8 million gallon per day surface water plant on the Guadalupe River. New Braunfels Utilities' three wastewater treatment plants have a total daily capacity of 8.4 million gallons.

GDF SUEZ Energy North America (GDF-SENA) manages GDF Suez Energy International's energy business in Canada, Mexico, and the US. The company develops and operates electricity and cogeneration facilities, markets and sells energy products and services, and imports and distributes natural gas and liquefied natural gas (LNG). It serves both commercial and industrial customers. (GDF-SENA)'s primary unit (GDF SUEZ Energy Generation NA) owns and operates 60 power, cogeneration, steam, and chilled-water facilities, including those in construction, representing a capacity of 7,500 MW of electricity generation, 6 million pounds per hour of steam, and 42,000 tons per hour of chilled water.

Associated Electric Cooperative makes the connection between power and cooperatives. The utility provides transmission and generation services to its six member/owner companies, which in turn provide power supply services to 51 distribution cooperatives in three Midwest states. (The distribution cooperatives have a combined customer count of more than 875,000.) Associated Electric operates 9,520 miles of power transmission lines and has about 5,240 MW of generating capacity from interests in primarily coal- and gas-fired power plants and from wholesale energy transactions with other regional utilities.

Porvair wants to reign in pores. The company makes specialist porous filtration products out of ceramics, plastic, metal, and carbon for a variety of industries, including aerospace, aluminum, high-purity liquids, life sciences, and nuclear maintenance. The company's specialist laboratory filter systems are used by pharmaceutical and drug companies for diagnostic and testing kits, medical devices, and pharmaceutical production. Porvair also makes high performance bi-polar planes for fuel-cell manufacturers. The company operates in both the UK and US.

Energen Corporation, an energy holding company, engages in the acquisition, exploration, development, and production of oil, natural gas, and natural gas liquids in the continental United States. It also involves in the purchase, distribution, and sale of natural gas to residential, commercial, and industrial customers, as well as other end-users of natural gas in central and north Alabama. In addition, the company provides gas transportation services for industrial and commercial customers located on its distribution system. As of December 31, 2009, Energen Corporation had proved oil and gas reserves of 1,547 billion cubic feet equivalent in the San Juan Basin in New Mexico and Colorado, the Permian Basin in west Texas, and the Black Warrior Basin in Alabama. Energen Corporation was founded in 1929 and is headquartered in Birmingham, Alabama.

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.

Yorkshire Water provides water and wastewater services to about 1.9 million households (4.8 million people) and approximately 130,000 business customers. The company operates more than 700 water and sewage treatment works and 120 reservoirs and supplies more than 1.3 billion liters of drinking water per day to homes and businesses in Yorkshire. Yorkshire Water also collects, treats, and disposes of about 1 billion liters of wastewater. The group has given its tap water the trade mark Icytonic, and it is the only water company in the UK to register its core product. Yorkshire Water is the primary subsidiary of Kelda Group.

Middle Tennessee Electric Membership Corporation's service territory is smack dab in the middle of Tennessee. The utility company distributes electricity to about 180,000 residential and business customers (member/owners) in four counties (Cannon, Rutherford, Williamson, and Wilson), via 10,000 miles of power lines connected to about 30 electric distribution substations. Middle Tennessee Electric purchases its power supply from the Tennessee Valley Authority. The corporation is Tennessee's largest electric cooperative and the sixth largest in the US.

IBERDROLA RENOVABLES is the leader of wind power in Iberia and the world. The company is the renewable energy arm of Spanish utility giant IBERDROLA S.A. IBERDROLA RENOVABLES has a presence in more than 20 countries across Europe, North America, South America, and Asia. In early 2010 it had an installed generating capacity of 11,000 MW). The company's flexible arrangements with suppliers, and geographic diversification has enabled it to build a total capacity (including developments in the pipeline) of more than 57,400 MW. Besides wind energy, the company invests in small hydroelectric, solar, tidal, biomass and other green energy 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.

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