Renegy Holdings (formerly Catalytica Energy Systems) was formed in the 2007 merger of Catalytica with the renewable energy divisions of NZ Legacy, a land and energy development firm. Among other ventures, Renegy has built a biomass power generation plant near Snowflake, Arizona, that came online in 2008. The company has long-term power purchasing agreements in place with Arizona Public Service and Salt River Project to buy biomass electricity from the Snowflake White Mountain Power plant. To save costs, in 2009 Renegy delisted its stock from the NASDAQ exchange.

Catalytic Combustion Corporation clears the air -- literally and alliteratively. The company makes systems, processes, and products to help customers eliminate volatile organic compounds (VOCs) and other pollutants in order to meet air-quality standards. Catalytic Combustion's catalysts -- substances that accelerate the rate of chemical reactions -- are used in a host of industries and products, ranging from appliances to graphic arts to nuclear power plants. The company makes catalysts from materials such as ceramics, metal foil, and wire mesh. Catalytic Combustion was founded in 1950.

E.ON AG, a power and gas company, engages in the power generation, energy trading, and gas supply businesses. The company generates electricity from coal, natural gas and oil, nuclear, water, wind, solar, and bio energy; and involves in the exploration and production of gas in the North Sea. It also engages in the storage and transportation of gas, including liquefying natural gas; carbon sourcing; and distribution of power and gas. In addition, the company buys and sells primarily electricity, natural gas, oil, coal, biomass, freight, and carbon allowances; and generates and distributes heat. It serves residential, business, industrial, regional and municipal utilities, and local public authorities. As of December 31, 2009, the company had approximately 73 giga watts of installed capacity for power generation; 33,000 kilometers (km) of power transmission networks; a 1 million km power distribution system, as well as approximately 11,600 km of gas transport pipelines, and a 100,000 km gas distribution system. It has operations primarily in Europe, Russia, and North America. The company was founded in 1929 and is headquartered in Dusseldorf, Germany.

Buckeye Power was established by Ohio's rural electric co-ops to produce and transmit electric power for member systems throughout the state. Buckeye Power, which owns two of the three generating units in the at Cardinal Generating Station, contracts with other Ohio electric companies to use their transmission systems to transmit power to its member electric distribution cooperatives.It has cost a few bucks to generate power, but the effort has been well worth it for Buckeye Power, an electricity generation and transmission cooperative that provides electricity to 24 distribution companies in Ohio and one in Michigan. Together they serve more than 390,000 homes and businesses in 77 of Ohio's 88 counties

Puget Energy is one of Washington State's largest utilities. Its electricity supply and transmission business, Puget Sound Energy, provides electricity to more than 1 million customers and natural gas to about 749,000 customers in western Washington. The utility owns fossil-fueled and hydroelectric plants as well as wind farms with a cumulative total of about 5,050 MW of capacity. In 2009, Puget Holdings LLC, a consortium led by Australian bank unit Macquarie Infrastructure Partners, acquired Puget Energy for $7.4 billion. The deal strengthens Puget Energy's access to cash to pay down debt and for future growth.

Pinnacle West Capital is at the peak of the energy pyramid in Arizona. It is the holding company for the state's largest electric utility, Arizona Public Service (APS), which transmits and distributes electricity to 1.1 million residential, commercial, and industrial customers throughout most of the state. The utility also has more than 6,280 MW of generating capacity. Through APS and other subsidiaries, Pinnacle West markets wholesale and retail power in Arizona and the western US. The company also develops and manages real estate and invests in energy ventures.

JEA owns and operates an electric system with three generating plants and a fourth in the planning stages, and all transmission and distribution facilities including approximately 730 miles of transmission lines and 6,000 miles of distribution lines. JEA is also a joint owner with Florida Power & Light Company (FPL) in a third power plant, the St. Johns River Power Park (SJRPP), operated by JEA. SJRPP has a work force of over 350 employees and consists of two 624 net megawatt coal/petroleum coke-fired generating units. In addition, JEA is a joint owner with FPL of Unit 4 at Georgia Power Company’s coal-fired Plant Scherer. JEA owns a 200 net megawatt share of Unit 4. Finally, JEA produces 3.2 megawatts from a methane-fueled generating facility at the Girvin Road Landfill and 9.6 MW from Trail Ridge Landfill. A 12.6 MW solar project is coming online in 2010. JEA’s total generating capacity is approximately 3,050 megawatts.JEA's newest generating facility is Brandy Branch, located in west Jacksonville, home to three 170 megawatt combustion turbine units. These units are capable of operating on both natural gas and diesel fuel. Units1 and 2 went into commercial operation May 31, 2001, followed by Unit 3 on October 12, 2001.

Alpiq (formerly Aare-Tessin Ltd. for Electricity, or Atel) is the largest supplier of electricity in Switzerland. It generates electricity by means of hydro, nuclear, and coal power, then trades and distributes it through its transmission grid across Switzerland and 28 other European countries. Its main markets include Italy, Germany, France, and countries in Central and Eastern Europe. Alpiq has 5,270 MW of generating capacity. The company also provides energy services including engineering, construction, and maintenance. Atel merged with fellow Swiss energy company EOS Holding in 2009 and became Alpiq. EOS owns 31% of the company; French energy giant EDF, 25%.

Brazos Electric is a 3,219 megawatt generation and transmission cooperative whose members' service territory extends across 68 counties from the Texas Panhandle to Houston. Organized in 1941, Brazos Electric was the first cooperative formed in the Lone Star state for the purpose of generating and supplying electrical power. Today, it is the largest generation and transmission cooperative in Texas. Brazos Electric is the wholesale power supplier for its 16 member-owner distribution cooperatives and two municipal systems.

Avista Corporation, an energy company, engages in the generation, transmission, and distribution of energy and energy-related businesses in the United States and Canada. The company operates through two segments, Avista Utilities and Advantage IQ. The Avista Utilities segment engages in the generation, transmission, and distribution of electric energy primarily from hydroelectric and thermal sources. This segment also distributes natural gas to retail customers in parts of eastern Washington, northern Idaho, and parts of northeast and southwest Oregon, as well as engages in wholesale purchase and sale of electricity and natural gas. As of December 31, 2009, it provided retail electric service to approximately 356,000 customers; and retail natural gas service to approximately 316,000 customers. This segment offers electricity and natural gas to residential, commercial, and industrial customers. The Advantage IQ segment provides utility expense management solutions to assess and manage utility costs and usage to multi-site companies in North America. It offers invoice processing, auditing and payment services, energy procurement, reporting, and advanced analysis, as well as provides analytical support, reporting, and consulting services. In addition, Avista’s other investments and operations include sheet metal fabrication of electronic enclosures, parts, and systems for the computer, telecom, renewable energy, and medical industries; real estate investments, primarily commercial office buildings; and investments in venture capital funds and low income housing. The company was founded in 1889 and is headquartered in Spokane, Washington.

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