Vattenfall, which provides power to 4.7 million retail customers in Belgium, Denmark, Finland, Germany, the Netherlands, Poland, Sweden, the UK. The Nordic region's largest utility group has about 33,000 MW of generating capacity in the region from interests in nuclear, hydroelectric, wind, and fossil-fueled power plants; it also markets wholesale energy and operates district heating facilities. State-owned Vattenfall is focusing on its growing its presence across Europe. In 2009 it acquired Belgium-based Nuon (renamed Business Group Benelux) in a $10.9 billion deal, boosting its position as a major European energy group

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).

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.

Graver Technologies makes filtration and separation products to eliminate impurities from water and air. The company's offerings include adsorbents, industrial air and gas filters, ion exchange resins, liquid filter cartridges, and stainless steel filter membranes. Its production locations are in Delaware, New Jersey, and New York. Graver Technologies' products are used primarily in manufacturing processes. The company's customers include operators of power plants and companies in the chemical, food and beverage, and pharmaceutical industries, along with makers of compressors, pumps, and turbines. Graver Technologies is a unit of the diversified Marmon Group of manufacturing companies.

F.B. Leopold wants to give you a nice, lean glass of water. The company develops and manufactures water and wastewater clarification, purification, and sludge collection equipment and backwash recovery systems. Customers include companies in the water and wastewater treatment industries. Its wastewater treatment systems include tertiary filtration, denitrification, clarification, and sludge collection systems. Founded in 1924, F.B. Leopold has been a part of ITT's Water & Wastewater Treament division since 2006.

Western Area Power Administration is one of four power marketing agencies of the US Department of Energy, the enterprise operates 57 hydroelectric power plants and one fossil-fueled power generation facility with a combined generating capacity of 10,395 MW. It also manages and maintains more than 17,000 miles of transmission lines. Western Area Power Administration sells wholesale power to investor-owned, government-owned, and cooperative utilities, power marketers, federal agencies, native American tribes and other electricity users in 15 western states over a 1.3-million-sq.-mi. service area.

Czechs want to power up, they turn to state-controlled EZ, (the lead company of CEZ Group) which produces, distributes, and sells electricity and heat to 3.5 million customers in the Czech Republic. EZ, formed by the government in 1992, is now publicly traded, although in 2008 the government continued to control 63% of its stock. Subsidiaries and affiliates of EZ form what is known as the CEZ Group, which has operations in coal mining and power generation and marketing across Central and Southeastern Europe. The CEZ Group serves 7 million customers and has about 12,200 MW of generating capacity.

Sunflower Electric Power is an electricity generation and transmission cooperative. The utility has interests in six fossil-fueled generation facilities (600 MW of capacity) and operates a more-than-1,150-mile transmission system with 76 substations. Sunflower Electric Power provides electricity to its owners, six member distribution cooperatives which collectively have more than 51,000 customers in western Kansas; it also indirectly serves a further 10,000 meters as wholesale power suppliers to regional cities and towns.

American Transmission Company is an entrepreneur in the US power grid business. Connecting electricity producers to distributors, American Transmission owns, operates, monitors, and maintains 9,400 miles of high-voltage electric transmission lines and 510 substations in portions of Illinois, Michigan, Minnesota, and Wisconsin. American Transmission is one of the first for-profit transmission companies, formed when the US market deregulated in the early 2000s. The company operates the former transmission assets of some of its shareholders. About 30 utilities, municipalities, municipal electric companies, and electric cooperatives in its service area have an ownership stake in American Transmission.

Calvalley Petroleum searches below the plateau for fuel for its customers. The company focuses on exploring for and producing oil and natural gas at Block 9 in the Republic of Yemen. The company, which has about 16 working wells (more than 50 have been drilled), produces some 5,000 barrels of oil each day. Its subsidiary Calvalley Petroleum (Cyprus) Ltd. is the operator of the property, which includes about 552,000 acres of land in the Sayun-Masila basin. Calvalley Petroleum has a net proved plus probable reserves of 7.8 billion barrels of oil equivalent.

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