Integrys Energy Group, Inc., through its subsidiaries, operates as a regulated electric and natural gas utility company in the United States and Canada. It provides natural gas utility services in Chicago, Wisconsin, Michigan, and Minnesota. As of December 31, 2009, Integrys Energy Group, Inc. served approximately 1,669,000 residential, commercial and industrial, transportation, and other customers. It had approximately 22,000 miles of natural gas distribution mains; and approximately 1,010 miles of natural gas transmission mains. The company also generates and distributes electric energy form coal, natural gas, fuel oil, hydroelectric, and wind resources in Wisconsin and Michigan. It served approximately 489,000 residential, commercial and industrial, wholesale, and other customers. In addition, Integrys Energy offers nonregulated energy supply and services; and electric transmission services. Integrys Energy Group, Inc. was formerly known as WPS Resources Corporation and changed its name to Integrys Energy Group, Inc. in February 2007. Integrys Energy Group, Inc. was founded in 1883 and is based in Chicago, Illinois.

Privatization is the light at the end of the tunnel for Companhia Energetica de Sao Paulo, one of Brazil's largest power generators. Known as CESP, the company is the largest generator of electricity used in the Brazilian state of Sao Paulo. CESP's six hydroelectric facilities (57 generation units) have a capacity of more than 7,456 MW. It gets most of its revenues from distribution utilities. Sao Paulo state government-controlled CESP previously had 22 power plants, but it spun off two generating companies and a transmission company in 1999. The slimmer CESP was targeted for auction, but the state government postponed the sale. CESP is restructuring its debt and is focusing on operational efficiency.

Massive power resource, Massachusetts Municipal Wholesale Electric Company (MMWEC) provides power supply services to its members -- 23 of the state's 40 municipal utilities (28 utilities are also participants in MMWEC power supply projects). The power supplier has about 715 MW of generating capacity from interests in fossil-fueled and nuclear power plants in the northeastern US, and it negotiates bulk electricity purchases from other generators for its members. MMWEC is the operator and principal owner of the Stony Brook Energy Center, a 520 MW, combined-cycle intermediate and peaking generating station in Ludlow, Massachusetts.

Connecticut Water Service, Inc., through its subsidiaries, operates as a regulated water company in Connecticut. It operates in three segments: Water Activities, Real Estate Transactions, and Services and Rentals. The Water Activities segment supplies drinking water. The Real Estate Transactions segment involves in the sale or donation of its real estate holdings. The Services and Rentals segment provides contracted services to water and wastewater utilities and other clients, which include contract operations of water and wastewater facilities; Linebacker, an optional service line protection program that comprises repairing or replacing leaking or broken water service line, curb box, curb box cover, meter pit, meter pit cover, meter pit valve, and in-home water main shut off valve before the meter; and providing bulk deliveries of emergency drinking water to businesses and residences through tanker trucks. This segment also engages in leasing and renting residential and commercial properties. As of December 31, 2009, Connecticut Water Service, Inc. served 88,534 customers in 54 towns in Connecticut. The company was founded in 1956 and is headquartered in Clinton, Connecticut.

Ozocan can meet the ozone generator and purifier needs of its water and waste water clients. Ozocan (formerly Hankin Water Technologies) provides water-purification equipment for aquaculture, commercial aquariums, drinking-water treatment, industrial-waste treatment, and other uses. The company has also supplied ozone to laminating plants to speed up the application of polyethylene to paper. Ozone systems have been used to treat drinking water for decades, in both municipal and commercial bottling plants, and have been widely used in swimming pools since the 1950s. The company was established in 1954.

Empire District Electric (EDE) has the sovereign authority to light up its territory. The utility transmits and distributes electricity to a population base of more than 450,000 (or about 215,000 direct customers) in southwestern Missouri and adjacent areas of Arkansas, Kansas, and Oklahoma. It also supplies water to three Missouri towns and natural gas throughout most of the state. EDE's interests in fossil-fueled and hydroelectric power plants give it a generating capacity of 1,257 MW; it also buys and sells power on the wholesale market. In addition, the company is pursuing nonregulated opportunities such as leasing capacity on its fiber-optic network.

Central Vermont Public Service Corporation, together with its subsidiaries, operates as an electric utility company. The company engages in the purchase, production, transmission, distribution, and sale of electricity. It sells electricity to residential, commercial, and industrial customers. As of December 31, 2009, the company served approximately 159,000 retail customers in Vermont. Its wholly owned plants included 20 hydroelectric generating facilities with an aggregate nameplate capacity of 45.3 megawatts; and 2 oil-fired gas turbines with a combined nameplate capacity of 26.5 megawatts. The company also owns, buys, sells, and leases real and personal property and interests therein related to the utility business; and sells and rents electric water heaters in Vermont and New Hampshire. In addition, it has joint ownership interests in electric generating and transmission facilities. The company was founded in 1929 and is based in Rutland, Vermont.

United Air Specialists has ESP, and the company knows just when to cause static. The company's industrial air pollution control unit makes electrostatic precipitators (ESP) that electrify airborne particles and remove them from the air. United Air Specialists also makes commercial air-cleaning systems, including kitchen emissions systems. In addition, the company makes electrostatic fluid control and high-precision spraying equipment. The company's products are used in offices, hospitals, bars, schools, and industrial settings. United Air Specialists, founded in 1966, is part of the industrial and environmental filtration business unit of manufacturing group CLARCOR.

Xcel Energy has accelerated its energy engine into utility markets across the US. The utility holding company distributes electricity to 3.4 million customers and natural gas to 1.9 million in eight states; Colorado and Minnesota account for the majority of its customers. Its regulated utilities -- Northern States Power, Public Service Company of Colorado, and Southwestern Public Service -- have more than 20,500 MW of primarily fossil-fueled generating capacity. Xcel also has 35,200 miles of natural gas transmission and distribution pipelines. Pushing green energy sources, in 2008 Xcel announced that it would develop solar-generated power plants in Colorado as part of its green energy initiative.

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.

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