ReliOn relies on its ability to produce hydrogen fuel cells in order to make money. The company claims to be the world's leading developer and marketer of modular, cartridge-based, proton exchange membrane fuel cell technology. ReliOn markets a range of stationary fuel cells for emergency and back up power systems, uninterruptible power supplies, digital power needs and a range of off grid power requirements. The company has sold and installed more than 2 MW of products with private and public entities in the energy, telecommunications, and transportation segments. Investors include Avista, Enterprise Partners Venture Capital, and Wall Street Technology Partners.

Kansas Electric Power Cooperative, Inc. (KEPCo), headquartered at Topeka, Kansas, was incorporated in 1975 as a not-for-profit generation and transmission (G & T) cooperative. It is KEPCo's responsibility to procure an adequate and reliable power supply for its 19 distribution rural electric cooperative Members at a reasonable cost. Through their combined resources, KEPCo Members support a wide range of other services such as rural economic development, marketing and diversification opportunities, power requirement and engineering studies, and rate design, among others.KEPCo is governed by a Board of Trustees representing each of its 19 Members which collectively serve more than 110,000 electric meters in the eastern two-thirds of rural Kansas (see map). The KEPCo Board of Trustees meets regularly to establish policies and act on issues that often include recommendations from working committees of the Board and KEPCo staff.

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.

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.

Environmental Waste Controls (EWC) slows down the fill-up of UK landfills. The company leases and sells waste-compactor equipment and provides maintenance services for the compactors. It also collects, transports, and recycles or disposes of waste for its 400-plus public- and private-sector customers, which include manufacturing and retail companies, food processors, hotels (such as Hilton and Radisson Hotels), railway stations, National Health Service Trusts, and local governments. The company was the subject of a management buyout in 2004. EWC was founded in 1993.

American Electric Power Company, Inc. engages in the generation, transmission, and distribution of electric power. It generates electricity using coal and lignite, natural gas, nuclear, and hydroelectric energy. The company distributes electric power at wholesale to other electric utility companies, rural electric co-operatives, municipalities, and other market participants, as well as to retail customers in its service areas. It also operates nonregulated wind farms and barging operations, as well as provides various energy-related services. The company operates in the states of Arkansas, Indiana, Kentucky, Louisiana, Michigan, Ohio, Oklahoma, Tennessee, Texas, Virginia, and West Virginia. As of December 31, 2008, it owned or leased approximately 37,000 megawatts of power generation capacity. The company was founded in 1906 and is based in Columbus, Ohio.

Graver Technologies makes filtration and separation products to eliminate impurities from water and air. The company's offerings include adsorbents, industrial air and gas filters, ion exchange resins, liquid filter cartridges, and stainless steel filter membranes. Its production locations are in Delaware, New Jersey, and New York. Graver Technologies' products are used primarily in manufacturing processes. The company's customers include operators of power plants and companies in the chemical, food and beverage, and pharmaceutical industries, along with makers of compressors, pumps, and turbines. Graver Technologies is a unit of the diversified Marmon Group of manufacturing companies.

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.

NOVEC is no novice when it comes to electricity distribution. Northern Virginia Electric Cooperative (NOVEC) is a member-owned utility that serves more than 130,000 residential, commercial, industrial, and government customers in northern Virginia. NOVEC receives its power supply primarily from generation and transmission utility Old Dominion Electric Cooperative. The company also markets natural gas and long-distance phone services to retail customers in Virginia and Maryland through its NOVEC Energy Solutions unit. Subsidiary NOVEC Solutions sells energy appliances. NOVEC was formed in 1983 through the merger of Prince William Electric Cooperative and Tri-County Electric Cooperative.

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.

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