Tata Power Company keeps society going by generating electricity. The largest private power utility in India, the company specializes in generating, transmitting, and distributing electrictity. Tata Power, which has a generation capacity of more than 2,300 mega watts, provides electricity for households, as well as textile mills, refineries, water pumping plants, and textile mills, among other facilities. The company has operations in the states of Maharashtra, Jharkhand, and Karnataka. Tata Power also provides electronic equipment and project consultancy.

Portsmouth Water Limited serves an area of the UK extending from South East Hampshire to West Sussex, and from the River Meon to the River Arun. Portsmouth Water supplies about 160 million liters of water per day. Its 301,200 customers include industries, government establishments, and commercial businesses, as well as a residential population of 657,000. The company operates a 3,270-km network of water mains and about 20 treatment works. About 85% of the company's supply comes from groundwater sources.

Southwest Gas Corporation engages in the purchase, distribution, and transportation of natural gas in portions of Arizona, Nevada, and California. As of December 31, 2009, Southwest Gas Corporation purchased and distributed, or transported natural gas to approximately 1,824,000 residential, commercial, and industrial customers. It also operates as an underground piping contractor that provides utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems. Southwest Gas Corporation was founded in 1931 and is headquartered in Las Vegas, Nevada.

Ferrostaal Incorporated is betting on the sun. The company is a subsidiary of the German industrial and heavy construction conglomerate Ferrostaal AG and provides its parent's alternative energy business in North America. It operates, with Solar Millennium, a joint venture called Solar Trust of America (STA) that concentrates on solar power generation. The International Petroleum Investment Company of Abu Dhabi bought a majority stake in Ferrostaal from MAN SE in 2009 and dropped the former parent company's brand from what had been called MAN Ferrostaal.

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.

Veolia Environmental Services, a part of Veolia Environnment (France), is a leader in waste management in the UK. Through its various companies, Veolia Environmental Services provides waste collection, recycling, disposal, and environmental cleansing services to the public and private sectors. It operates a network of landfill sites, material recycling facilities, transfer stations, civic amenity sites, and Energy from Waste incineration plants. The company serves more than 16 million customers in more than 100 Local Authorities and has been active in the UK since 1990.

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.

RainSoft (a division of Aquion Water Treatment Products) wants to clear up the water in your home or office. Through its division, the company makes residential and commercial water treatment equipment. Products include whole-house water conditioning systems, drinking water systems, and filters designed to remove particular contaminants that detract from water's taste and odor. RainSoft's products are distributed through a network of about 300 independent dealers in the US and in 24 countries in Asia, Europe, and the Middle East. Clients have included Allstate , Dow Chemical, Ford Motor, Holiday Inn, and Underwriters Laboratories.

Ormat Technologies is on an environmentally safe power trip, building geothermal as well as recovered energy power plants. Geothermal technology extracts hot water or steam that is vaporized and used to drive turbines. The fluid is then cooled and recycled back through the process, making it a clean and renewable energy source. Recovered energy utilizes heat produced in other industrial processes. The company, set up by Israel-based Ormat Industries, also sells power units for both types of plants, and sells fossil fuel powered turbo-generators with a capacity of between 400 watts and 4,000 watts. Ormat operates power plants (with a total of 518 MW of power) in Guatemala (2), Kenya, Nicaragua, and the US (10).

Thermal Energy International ledgers are in the black. The company focuses on providing air pollution control, renewable energy, and waste heat recovery and other energy conservation products, primarily under the Flu-Ace and Dry-Rex names. It also offers complementary engineering services. Thermal Energy International is also developing a product that targets ozone generation, THERMALOZOMAX. Customers include auto manufacturers; coal-fired utilities; food makers; hospitals; primary metal, pulp and paper processors; and sewage-treatment facilities.

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