Marsulex is scrubbing up smokestacks in North America. The company provides outsourced air-quality regulation compliance services to the oil refinery and power generation industries. Among Marsulex's emission-control products are spent acid regeneration and sulphate scrubbing systems; the firm also processes and sells sulphur by-products. Customers in Marsulex's oil-refinery segment include Shell, Petro-Canada, BP, and Sunoco. The company provides services to power-generation customers worldwide. Marsulex operates seven plants in Canada and ten in the US, including one in Southern California. In 2009 investment firm Harrowston Holding acquired control of Marsulex.

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.

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.

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%).

Warren Rural Electric Cooperative Corporation (Warren RECC) provides its member customers with electricity, security systems, and surge suppression equipment, as well as with floodlighting and street lighting. It offers propane through non-affiliated Propane Energy Partners. The co-op serves more than 55,300 customers in an eight-county service area (Barren, Butler, Edmonson, Grayson, Logan, Ohio, Simpson, and Warren counties) in rural south-central Kentucky. Warren RECC is affiliated with the Tennessee Valley Authority and a member of Touchstone Energy, a 600-member alliance of electricity co-ops.

Public Utility District No. 1 of Chelan County, Washington (or Chelan County PUD) provides power and water to residents of the county located in the middle of the Evergreen State. The utility operates three hydroelectric-generation facilities on or near the Columbia River that have a combined capacity of about 2,000 MW. About 30% of the district's electricity goes to its more than 47,000 residential, commercial, and industrial customers; the rest is sold wholesale to other utilities operating in the northwestern US. Chelan County PUD also provides water and wastewater services to about 5,700 customers.

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.

Exelon Corporation company distributes electricity to 5.4 million customers in northern Illinois (including Chicago) and southeastern Pennsylvania (including Philadelphia) through subsidiaries Commonwealth Edison (ComEd) and PECO Energy. PECO also distributes natural gas to 485,000 customers. Subsidiary Exelon Generation holds the company's power plants, whose production capacity is just about 25,000 MW. About two-thirds of Generation's power is nuclear. Exelon Power Team is a top wholesale energy marketer, and Exelon Energy markets retail power and offers other energy-related services.

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.

Shikoku Electric Power, like the island it serves, is making bridges to new areas. One of 10 regional electric utilities licensed by the Japanese government to generate, transmit, and distribute power, Shikoku (known as Yonden in Japan) provides electricity to more than 4 million people in the four prefectures of Shikoku. The company has a generating capacity of more than 6,660 MW, primarily from nuclear and fossil-fueled plants; however, Shikoku is converting some of its oil-fueled plants to liquefied natural gas. Shikoku has expanded beyond its power utility business into activities such as Internet access, cable TV, remote monitoring and control systems, and rest homes for the elderly.

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