Ontario Power Generation produces most of the electricity supply for the Canadian province of Ontario. The company, owned by the province, operates fossil-fueled, nuclear, hydroelectric and wind power plants that give it a generating capacity of almost 22,000 MW. Ontario Power sells wholesale power to utilities (including Hydro One) and businesses in Ontario; it also markets electricity in interconnected Canadian and US markets. It operates 65 hydroelectric, five thermal (fossil fuel), three nuclear, and two wind-power generating stations. In addition, Ontario Power operates co-owned and leased facilities, including two gas-fired combined cycle stations and two nuclear stations.

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.

American States Water Company, through its subsidiaries, provides water, electric, and contracted services in the United States. The company engages in the purchase, production, distribution, and sale of water in California; and the distribution of electricity in San Bernardino Mountain communities. It distributes electricity in 1 electric customer service area and 3 water service regions operating within 75 communities in 10 counties in the state of California, as well as provides water service in 21 customer service areas. As of December 31, 2009, the company served 254,998 water customers and 23,234 electric customers, as well as served 13,406 customers in the town of Fountain Hills, Arizona and a portion of the City of Scottsdale, Arizona. It also offers water and/or wastewater services, including the operation, maintenance, renewal, and replacement of the water and/or wastewater systems. The company was founded in 1929 and is headquartered in San Dimas, California.

PJM Interconnection, which oversees a 56,350-mile section of the North American power transmission grid that spans across 13 northeastern and midwestern states and the District of Columbia. The regional transmission organization monitors and coordinates the movement of wholesale electricity in its service territory; its more than 560 members have a combined generating capacity of about 164,000 MW. Sanctioned by the Federal Energy Regulatory Commission, PJM is charged with ensuring fair competition among power purchasers, sellers, and traders; it also is responsible for the reliable delivery of distributed electricity to about 51 million consumers in its territory.

TestAmerica Laboratories (formerly Severn Trent Laboratories) can tell you. It operates about 40 environmental testing laboratories and more than 30 service centers in the US. TestAmerica provides chemical, physical, and biological testing of air, drinking water, tissue, and solid waste. The company has developed technologies to test air for fire retardants, explosives, radiation, and source emissions. Its affiliates include environmental and geotechnical drilling firm TestAmerica Drilling, water sampling equipment and remediation pumping system provider QED Environmental Systems, and air quality analyst EMLab P&K).

Tenaga Nasional Berhad (TNB) keeps away malaise as it electrifies Malaysia. The largest power company in Southeast Asia, TNB generates two-thirds of the electricity on the Malaysian Peninsula. The company has a generating capacity of more than 11,940 MW; it also operates the national power transmission and distribution grid, which serves more than 7 million residential, industrial, and commercial customers. A host of subsidiaries support TNB's business; they include power equipment manufacturing, engineering, and real estate companies. Although Malaysia's power industry is undergoing deregulation, TNB has successfully resisted efforts to split up the company, which is 38%-owned by Khazanah Nasional Berhad.

Caithness Corp., which develops wind and other renewable power plants in the US under the Caithness Energy brand. Although the firm has focused on the development, acquisition, operation, and management of geothermal, hydroelectric, wind, and solar energy power projects, it also develops environmentally friendly fossil-fueled plants. Caithness is one of the largest producers of renewable energy in the US, and has developed more than 350 MW of geothermal projects, 160 MW of solar plants, and 440 MW produced by wind turbines. On the cleaner fossil fuel plant side it has also developed more than 2,000 MW of gas-turbine powered capacity.

Catalytic Combustion Corporation clears the air -- literally and alliteratively. The company makes systems, processes, and products to help customers eliminate volatile organic compounds (VOCs) and other pollutants in order to meet air-quality standards. Catalytic Combustion's catalysts -- substances that accelerate the rate of chemical reactions -- are used in a host of industries and products, ranging from appliances to graphic arts to nuclear power plants. The company makes catalysts from materials such as ceramics, metal foil, and wire mesh. Catalytic Combustion was founded in 1950.

Rayburn Country Electric Cooperative (Rayburn Electric) operates in the old stomping grounds of the legendary Texas politician and former speaker of the US House of Representatives. Rayburn Electric is a power generation and transmission organization that supplies wholesale power to five rural distribution cooperatives operating in 16 counties in north central and northeastern Texas. The five distribution cooperatives (Fannin County Electric Coop, FEC Electric Coop, Grayson-Collin Electric Coop, Lamar County Electric Coop, and Trinity Valley Electric Coop) collectively own the company. In 2010 it acquired a 25% stake in a Texas power plant from Calpine for $215 million.

Cleco Corp. is an energy services company based in central Louisiana. We have been in business since 1934, and throughout our years of service, we have perfected the basics of a successful electric utility business: reasonable rates, reliable service and customer focus.Our two primary businesses are Cleco Power LLC, a regulated electric utility business serving approximately 277,000 customers in Louisiana, and Cleco Midstream Resources LLC, a wholesale energy business.Today, Cleco Power operates four power plants with 3,803 megawatts of *nameplate generating capacity and owns 2,532 megawatts of this capacity.Through Cleco Midstream Resources, our wholesale energy business, we operate one wholesale power plant with 775 megawatts of nameplate generating capacity.We use a mixture of western coal, petroleum coke (petcoke), lignite, oil, and natural gas to serve our customers. This diverse fuel mix helps Cleco deliver reliable, low-cost power to its customers. We also have access to purchased power when it's needed and when it's more cost-effective than our generation.

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