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.

Steril-Aire lets you breathe easy. The company's products use ultraviolet "C" wavelength (UVC) energy to destroy molds and infectious diseases in HVAC systems. Steril-Aire makes and markets a wide range of UVC devices and accessories for commercial, residential, school, food processing, health care, and industrial applications. The company has an extensive portfolio of patents covering many aspects of UVC germicidal technology. Some products are designed for outdoor installation, and are water resistant. All others are designed for 99% relative humidity and function properly under those conditions.

Canadian Utilities is the strong arm of diversified energy company ATCO and accounts for most of its sales. Canadian Utilities' regulated utilities operations are ATCO Gas, which distributes natural gas to more than 1 million customers in almost 300 communities in Alberta, and ATCO Electric, which provides electricity to about 207,000 customers. ATCO Pipelines provides natural gas transportation services to producers, major industrial users and gas distribution companies in Alberta. Canadian Utilities' Energy unit (including ATCO Power, ATCO Midstream and ATCO Energy Solutions) manages power generation and pipeline activities. The Technologies segment provide business systems solution through ARCO I-Tek.

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.

Exelon Corporation company distributes electricity to 5.4 million customers in northern Illinois (including Chicago) and southeastern Pennsylvania (including Philadelphia) through subsidiaries Commonwealth Edison (ComEd) and PECO Energy. PECO also distributes natural gas to 485,000 customers. Subsidiary Exelon Generation holds the company's power plants, whose production capacity is just about 25,000 MW. About two-thirds of Generation's power is nuclear. Exelon Power Team is a top wholesale energy marketer, and Exelon Energy markets retail power and offers other energy-related services.

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.

Red El�ctrica de Espa�a (REE) owns and operates most of the country's power transmission grid. REE's system includes more than 34,300 kilometers of high-voltage transmission lines and more than 3,100 substation circuit bays. T-Online acquired REE's 10,000-kilometer fiber-optic network, which runs alongside the utility's power lines and is used to offer broadband telecom services, in 2005. However, REE's sister company Red El�ctrica Internacional, is contrtacted to continue maintenance of this network until 2016.

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.

Dairyland Power Cooperative provides its customers with lots of juice in the land of lactose. The firm provides electricity generation (about 1,420 MW of generating capacity) and transmission services for 25 member distribution cooperatives and 16 municipal utilities in five states (including Wisconsin). The member cooperatives and municipal utilities in turn distribute electricity to almost 252,900 consumers. Dairyland Power generates more than 1,100 MW of capacity from its coal-fired power plants; it also operates 3,150 miles of transmission lines and 280 substations.

Western Area Power Administration is one of four power marketing agencies of the US Department of Energy, the enterprise operates 57 hydroelectric power plants and one fossil-fueled power generation facility with a combined generating capacity of 10,395 MW. It also manages and maintains more than 17,000 miles of transmission lines. Western Area Power Administration sells wholesale power to investor-owned, government-owned, and cooperative utilities, power marketers, federal agencies, native American tribes and other electricity users in 15 western states over a 1.3-million-sq.-mi. service area.

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