Trojan Technologies wants to zap you. The company manufactures ultraviolet (UV) lighting systems for disinfecting wastewater and treating contaminated soil and groundwater. Trojan's wastewater treatment systems are used in about 4,000 municipalities in 50-plus countries. The company's UV light systems work by altering the DNA in microorganisms and are an alternative to traditional chlorine-based disinfection systems. Trojan also makes UV products that cleanse water used in industrial processes such as food production and electronics manufacturing. Other products include residential UV systems for drinking water. Danaher controls Trojan.

Consolidated Water Co. Ltd. and its subsidiaries develop and operate seawater desalination plants and water distribution systems, as well as produce and supply water to customers in the Cayman Islands, the Bahamas, Belize, the British Virgin Islands, and Bermuda. It uses reverse osmosis technology to convert seawater to potable water. The company supplies water to end-users, including residential, commercial, and government customers. As of December 31, 2009, Consolidated Water Co. operated 16 reverse osmosis desalination plants through its subsidiaries and affiliates. It also offers engineering and management services, including designing and constructing desalination plants, and managing and operating desalination plants owned by other companies. The company was founded in 1973 and is based in Grand Cayman, Cayman Islands.

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.

Piedmont Natural Gas Company, Inc., an energy services company, distributes natural gas to residential, commercial, industrial, and power generation customers in portions of North Carolina, South Carolina, and Tennessee. It also operates various energy-related businesses, including unregulated retail natural gas marketing, interstate natural gas storage, and intrastate natural gas transportation. As of October 31, 2009, the company served 952,469 retail customers and 61,000 customers served by municipalities. Piedmont Natural Gas Company, Inc. was founded in 1949 and is headquartered in Charlotte, North Carolina.

Show me the power. Cuivre River Electric Cooperative provides power to four eastern counties in the "Show Me" state: Lincoln, Pike, St. Charles, and Warren. The membership utility, which is one of Missouri's largest cooperatives with more than 58,000 residential, commercial, and industrial customers, gets its wholesale power supply from the Associated Electric Cooperative and the Central Electric Power Cooperative. Cuivre River Propane, jointly owned and operated by Cuivre River Electric Cooperative and MFA Oil Company supplies propane to co-op members from four locations, Bowling Green, Elsberry, Troy, and Wright City.

North Carolina Electric Membership Corporation (NCEMC) generates and transmits electricity to the state's 26 electric cooperatives in 93 of North Carolina's 100 counties. The co-op owns more than 600 MW of generating capacity through four primarily natural gas peak load generators, plus a 62% stake in Catawba Nuclear Station Unit 1, and a 31% stake in the common facilities of the Catawba Nuclear Station in South Carolina. It also buys power from Progress Energy, American Electric Power, and other for-profit utilities. NCEMC's member cooperatives serve more than 950,000 businesses and homes in North Carolina. The wholesale co-op also operates an energy operations center.

Energy Future Holdings (formerly TXU) has seen the future and it works -- powered by electricity. The company is the largest nonregulated retail electric provider in Texas (TXU Energy), with 2.1 million customers, and through its Luminant unit it has a generating capacity of more than 15,510 MW from its interests in nuclear and fossil-fueled power plants in the state. Energy Future Holdings has regulated power transmission and distribution operations through 80%-owned Oncor Electric Delivery. Oncor operates the largest regulated distribution and transmission system in Texas, providing power to more than 3.1 million electric delivery points over more than 117,000 miles of transmission and distribution lines.

Vectren intends to inundate Indiana and Ohio with energy. Through its utility subsidiaries (Indiana Gas Company, Southern Indiana Gas and Electric, and Vectren Energy Delivery of Ohio), the company distributes natural gas to 995,000 business and residential customers in the two states. It also distributes electricity to 141,000 customers and has 1,425 MW of primarily coal-fired generating capacity in Indiana. Vectren's other nonregulated businesses include retail and wholesale energy marketing and management services, coal mining, synthetic fuels production, and utility infrastructure construction.

Wolf Creek Nuclear Operating Corporation (WCNOC) helps to sate the energy hunger of the US public. The nuclear plant operator is in charge of the Wolf Creek Generating Station in Kansas, which houses a four-loop pressurized water reactor that generates about 1,200 MW of electricity (enough to power some 800,000 homes). WCNOC is joint venture between Westar Energy, which owns a 47% stake, Great Plains Energy (which through subsidiary Kansas City Power & Light owns 47%), and Kansas Electric Power Cooperative, 6%. Its job description is to operate, maintain, repair, and eventually decommission the Wolf Creek Generating Station.

United Air Specialists has ESP, and the company knows just when to cause static. The company's industrial air pollution control unit makes electrostatic precipitators (ESP) that electrify airborne particles and remove them from the air. United Air Specialists also makes commercial air-cleaning systems, including kitchen emissions systems. In addition, the company makes electrostatic fluid control and high-precision spraying equipment. The company's products are used in offices, hospitals, bars, schools, and industrial settings. United Air Specialists, founded in 1966, is part of the industrial and environmental filtration business unit of manufacturing group CLARCOR.

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