Duke Energy Indiana (formerly PSI Energy) brings a spark to the Hoosier state. One of Indiana's largest utilities, Duke Energy subsidiary Duke Energy Indiana transmits and distributes electricity to 69 of the state's 92 counties (approximately 780,000 customers). The utility also owns power plants (more than 6,730 MW of primarily fossil-fueled capacity), which are operated by its parent's merchant energy division. Duke Energy Indiana's service area covers about 22,000 sq. miles with an estimated population of 2.4 million. The company operates about 31,000 miles of distribution lines and a 5,400-mile transmission system. In 2010 Duke Energy Indiana appointed company veteran Doug Esamann as president.

Pensacola power users patronize Gulf Power. The regulated utility, a subsidiary of Southern Company, transmits and distributes electricity to more than 428,150 customers in northwestern Florida. Gulf Power generates about 2,660 MW of capacity from its fossil-fueled power plants, and it operates 1,600 miles of transmission lines and about 7,650 miles of distribution lines in its service territory. The utility, which serves 10 counties and more than 70 towns and cities, also provides wholesale electricity to two distributors in Florida, and it offers conservation, outdoor lighting, surge protection, and other energy-related products and services.

GAIL (India) Limited is no blowhard when it comes to turning energy into profits. The largest gas transmission and marketing company in India, GAIL owns more than 6,700 km of pipeline and has a 78% market share in India's natural gas transmission business. It has seven gas processing units and owns India's largest gas-based petrochemicals complex. In addition, GAIL has major domestic exploration and production operations. It also has a fiber-optic cable network of 13,000 km that provides bandwidth to telecommunications carriers. It is also involved in liquefied natural gas import projects. In 2010 GAIL (India) Limited expressed an interest in buying US shale assets. The government of India owns 57% of the company.

Southern Water Services provides water to about 1 million households in South East England. In addition, Southern Water provides wastewater services to about 2 million households. The company has 90 water treatment works, 150 water supply booster stations, and another 370 wastewater treatment works. It maintains a network of some 13,600 km of water mains. The utility also recycles sewerage sludge for use in agriculture. Its area of operation includes Kent, Sussex, Hampshire, and the Isle of Wight. Southern Water is owned by Greensands Investments Limited, which is owned by infrastructure investors and pension funds.

OGE Energy is the holding company for the largest electric utility in Oklahoma, but its largest revenue producer is its energy marketing and natural gas transmission unit, OGE Energy Resources. OGE owns Oklahoma Gas and Electric (OG&E), a public utility with almost 777,000 retail and wholesale customers in Oklahoma (including Oklahoma City) and a bit of western Arkansas. OG&E owns coal- and gas-fired power plants that generate 6,420 MW of capacity. Subsidiary Enogex operates 7,900 miles of natural gas gathering and transportation pipeline. The company also provides physical, asset, financial management services through marketing unit OGE Eenergy Resources.

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.

Salt River Project (SRP) provides Phoenix with two types of currents: electric and water. Electricity comes from the Salt River Project Agricultural Improvement and Power District, a political subdivision of the State of Arizona that has a generating capacity of about 8,100 MW and distributes power to about 934,000 homes and businesses. The district also sells excess power to wholesale customers. Water comes from the Salt River Valley Water Users' Association, a private firm that delivers almost 1 million acre-feet of water per year to residents and agricultural irrigators; the association also operates dams, canals, reservoirs, and wells in its service area.

Pampa Energ�a is one of Argentina's largest fully integrated electricity companies. Through subsidiaries or co-controlled companies, it generates more than 7% of the total electricity in Argentina, transmits some 95% of the country's electricity through transmission lines owned and operated by subsidiary Transener, and distributes electricity to more than 2.6 million residential and commercial customers through subsidiary Empresa Distribuidora y Comercializadora Norte (Edenor), the largest electricity distributor in Argentina. Pampa Energ�a maintains fossil fuel, thermal, and hydroelectric generation operations. Its distribution, transmission, and hydroelectric activities are regulated by Argentina's government.

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.

Reliance Infrastructure, formerly Reliance Energy, transmits and distributes electricity across India. The company's service territory covers an area exceeding a 124,300 square kilometers and includes the major cities of Delhi and Mumbai. Reliance Infrastructure operates power plants that generate more than 940 MW of capacity. Part of the Anil Dhirubhai Ambani Group, Reliance Infrastructure delivers more than 36 billion units of electricity to more than 30 million consumers. The company is also a major player in India's heavy construction market, and is engaged in constructing roads and airports, and developing urban infrastructure. It also has interests in real estate and retail hospitality.

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