Edison has grown to become Italy's leading independent power producer, with 12,100 MW of hydroelectric, fossil-fueled, and wind-powered generating capacity. Much of Edison's electricity goes to Italy's largest utility, Enel; Edison also sells power to commercial and industrial businesses. The company has a focus on natural gas exploration, production, and marketing. It also distributes gas directly to 171,900 retail customers. In 2009 Edison reported proved reserves of 35.5 billion cu. meters of natural gas equivalent. The company is controlled by Transalpina di Energia Srl (61%) and Electricite de France (19%).

Nature Group (formerly Nature Technology Solutions) provides wastewater treatment services to the oil, shipping, and offshore industries. Its technologies treat various types of industrial, marine, and oil industry waste streams, including using an environmental-friendly additive that helps remove hydrocarbons in oily wastewater. It helps operate port treatment plants in Gibraltar and Tananger, Norway, and a sewage treatment plant in Gibraltar; it is also involved in decommissioning refineries, installing treatment plants, and treating wastewater on offshore rigs.

ALLETE provides light to the northern climes. Most of its business is classified within its regulated operations, which include electric, gas, and water utilities located in northeastern Minnesota and northwestern Wisconsin. Those operations are conducted through subsidiaries Minnesota Power (about 145,000 customers) and Superior Water, Light and Power (about 35,000 customers for its electric, gas, and water utilities). ALLETE's other segment includes coal mining operations, emerging technologies related to electric utilities, and a real estate business (large land tracts in Florida). Subsidiary BNI Coal operates a mine in North Dakota that supplies, primarily, two generating co-ops, Minnkota Power and Square Butte.

NORESCO provides utility customers in the US with infrastructure development, design/build services, commissioning strategies, financing, and client-centered asset management services. The company develops and implements build/own/operate distributed generation, cogeneration, or combined heat and power projects; arranges, on a consulting basis, commodity electricity or gas supply; and provides firm contracting of energy supply. It also holds interests in independent power plants. Global leader in HVAC products and systems Carrier, a unit of UTC, owns NORESCO.

GenOn Energy, Inc. operates as a generator of wholesale electricity in the United States. Its portfolio of power generation facilities include baseload, intermediate, and peaking units using coal, natural gas, and oil to generate electricity. The company owns, contracts, or operates approximately 49 power generation stations with generation capacity of 24,599 megawatts. The company was formerly known as Mirant Corporation and changed its name to GenOn Energy, Inc. on December 4, 2010. The company is based in Houston, Texas.

Summerleaze has blown through a number of businesses -- aggregates, waste disposal, and renewable energy. The family-owned company, originally in the gravels/aggregates business, branched into using methane gas from the waste disposal landfills to make fuel. After acquiring renewable energy firm Thomas Graveson, it created Summerleaze RE-Generation, which has enough capacity (43 MW) to serve 70,000 houses from sites across the UK. Ennate Technology provides power generation equipment sales, maintenance, and hire services; its Green Hydrogen subsidiary supplies renewable hydrogen and oxygen for clients. Summerleaze also has a biogas unit, Summerleaze AnDigestion.

Guangzhou Development Industry helps keep the lights on in China's Pearl River Delta. Established in 1997, the company is the largest power producer in Guangzhou province, with stake in about 10 coal-fired power plants with 2,100 MW of generating capacity. Guangzhou's energy logistics division operates an 80,000-ton deep-water coal-loading terminal and a 340,000-ton coal storage field. Nansha Oil Terminal, its joint venture with BP, has expanded Guangzhou's oil products distribution services throughout the region. The company is also a shareholder in Guangzhou Northern No. 2 Ring Expressway, a key toll road operating in the Pearl River Delta

STP Nuclear Operating Company (STPNOC) is pulling out all the stops to make sure that the lights burn brightly in the Lone Star State. The company manages the South Texas Project Electric Generating Station on a 12,220-acre site near Bay City, Texas. The nuclear power plant's two reactors, which went into operation in 1988 and in 1989, produce about 2,700 MW of electricity and serve 2 million homes in Texas. The company is jointly owned by NRG Energy (44%), CPS Energy (40%), and Austin Energy (16%). STPNOC accounts for about 7.5% of the power consumed in Texas.

Community Energy is working to create greener communities in the northeastern and midwestern US. Through supply agreements with alternative energy generation companies and sales agreements with electricity distribution utilities, Community Energy, a unit of industry leader IDERBROLA RENEWABLES, offers green energy solutions to major businesses and governments as well as to more than 110,000 residential and small-business customers. The company is also involved in the development of wind farms and supplies power directly to end-users. Community Energy, which operates under the NewWind Energy brand, purchases power primarily from wind-powered generation facilities; it also markets solar and hydroelectric energy.

Denali Incorporated company specializes in fiberglass-reinforced composite products used to handle hazardous or valuable fluids. The company's Containment Solutions (CSI) unit makes underground fiberglass storage tanks for the petroleum and water and wastewater industries and above-ground steel storage tanks for the petroleum and automotive industries. Denali's Fabricated Plastics unit makes makes thermoplastic assemblies for corrosion applications, such as in tanks, piping, and ductwork.

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