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.

AEA Technology has hitched its wagon to the climate change star, focusing on government and private sector efforts to combat global warming, develop low-carbon processes, and monitor carbon and emissions trading. AEA Technology offers consulting, program management, and emergency response services for commercial, government, and industrial customers. Other areas of expertise include agriculture, health, business innovation, and transport. It is a major provider of advisory services to the UK government on climate change issues and technologies.

Southern California Edison (SCE) distributes electricity to a population of more than 13 million people in central, coastal, and Southern California (excluding Los Angeles and some other cities in the regions). The utility's system consists of about 12,000 circuit miles of transmission lines and more than 113,500 circuit miles of distribution lines. SCE also has 5,500 MW of net generating capacity from interests in nuclear, hydroelectric, and fossil-fueled power plants; it sold most of its fossil-fueled facilities in response to the state's deregulation legislation. The utility sells excess power to wholesale customers. SCE is a subsidiary of Edison International.

Calvalley Petroleum searches below the plateau for fuel for its customers. The company focuses on exploring for and producing oil and natural gas at Block 9 in the Republic of Yemen. The company, which has about 16 working wells (more than 50 have been drilled), produces some 5,000 barrels of oil each day. Its subsidiary Calvalley Petroleum (Cyprus) Ltd. is the operator of the property, which includes about 552,000 acres of land in the Sayun-Masila basin. Calvalley Petroleum has a net proved plus probable reserves of 7.8 billion barrels of oil equivalent.

Corning Natural Gas Corporation distributes natural gas through its own distribution and transmission network to residential, commercial, industrial, and municipal customers in the Corning, New York area, as well as to two other gas utilities that service the Elmira and Bath, New York areas. As of September 30, 2009, it served approximately 14,500 customers through 400 miles of pipeline in the Corning and Hammondsport, New York areas. Corning Natural Gas Corporation company was founded in 1904 and is headquartered in Corning, New York.

The Chugoku Electric Power Co. makes western Japan shine. The company generates, transmits, and distributes electricity to more than 5.2 million customers in the Chugoku region of western Japan. Approximately 89% of its customers are residential, and commercial and industrial customers account for the rest. The company's 110 power plants generate about 11,800 MW; traditional thermal plants generate about 65% of its power. Chugoku Electric intends to increase its use of nuclear power and is also researching alternative energy sources. In response to Japan's electricity market liberalization, the group is entering new business markets, including consulting, construction, fuel supply, and telecommunications.

San Antonio Water System provides water and wastewater services to 344,200 customers, or about 1 million people, in the San Antonio metropolitan area (including most of the city of San Antonio, several suburban municipalities, and adjacent parts of Bexar County). The utility is owned by the City of San Antonio. SAWS was formed in 1992 through a merger of three entities: the City Water Board, the City Wastewater Department, and the Alamo Water Conservation and Reuse District.

F.B. Leopold wants to give you a nice, lean glass of water. The company develops and manufactures water and wastewater clarification, purification, and sludge collection equipment and backwash recovery systems. Customers include companies in the water and wastewater treatment industries. Its wastewater treatment systems include tertiary filtration, denitrification, clarification, and sludge collection systems. Founded in 1924, F.B. Leopold has been a part of ITT's Water & Wastewater Treament division since 2006.

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.

A2A S.p.A. municipal multi-utility supplies electricity, natural gas, and water and wastewater services to customers, mostly in the province of Milan. A2A's units operate power-generation plants with some 3,700 MW of capacity),. The company distributes electricity and natural gas to regulated customers, and wholesale electricity and gas to buyers. It also owns a fiber-optic network that covers the city. A2A is also a leading environmental service company, treating some 2.9 million tonnes of waste material.

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