San Diego Gas & Electric (SDG&E) digs doling out energy in sandy Southern California. The company is a regulated utility that serves 1.4 million electricity customers and more than 840,000 natural gas customers in San Diego County and a portion of southern Orange County. The electric utility segment owns about 22,200 miles of power distribution lines, which serve about 25 communities; its 1,870 miles of transmission lines are managed by the California Independent System Operator. SDG&E also has limited power generation operations (it owns or contracts more than 5,500 MW of generating capacity). The gas utility operates almost 170 miles of transmission pipelines and about 8,420 miles of distribution mains.

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.

Degremont designs, builds, and operates water treatment plants worldwide to purify water and treat wastewater. The company has operations in more than 70 countries, and its plants provide more than 1 billion people with potable water. It is a specialist in designing and constructing facilities for seawater desalination by the means of reverse osmosis. It also designs and builds sludge treatment facilities. In the US the group operates through subsidiary Infilco Degremont. United Water formed a joint venture with Infilco Degrement in 2009 to operate a Water Environmental Research Center in Richmond,Virginia.

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.

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.

EDP Renovaveis loves the feel of the wind and the sound of the waves. One of largest wind energy companies in world, EDP Renovaveis has an annual generation capacity of about 5MW. Other power sources include solar thermal and photovoltaic energy, which create electricity from steam and solar radiation conversion, respectively. The company is also developing ocean wave generation capabilities. EDP Renovaveis has wind generation facilities in nearly 10 countries; Spain and the US (through subsidiary Horizon Wind Energy) contribute the greatest part of its wind power generation capacity. The company is the renewable division of fellow Portuguese company EDP Group, the Iberian Peninsula's third largest energy firm.

Snam Rete Gas (formerly Snam S.p.A.) transmits natural gas across Italy, managing a network of about 19,300 miles of transmission pipeline. The network includes eight regional centers, 55 local management centers, and 11 compressor stations, and transports more than 83 billion cubic meters of natural gas a year. The company is also the only liquefied natural gas (LNG) regasification and storage services provider in Italy (operating through subsidiary GNL Italia). Energy behemoth Eni controls Snam Rete Gas, which was formed in 2001. In 2009 Eni consolidated its gas units, and sold its Italgas gas distributor and its Stogit gas storage unit to Snam Rete.

Southern Minnesota Municipal Power Agency,the power provider supplies wholesale electricity to its 18 member municipal distribution utilities, which in turn distribute power to more than 109,000 retail customers. The agency's main power source is the 900 MW Sherco 3-power plant generating unit near Becker, Minnesota. Southern Minnesota Municipal Power Agency owns 41% of the low-sulfur Western coal fueled plant in partnership Northern States Power Company, the unit's operator. It also relies on a range of intermediate and peaking units owned by the agency's members.

Golden Spread Electric Cooperative, Inc. is a tax-exempt, consumer-owned public utility, organized in 1984 to provide low cost, reliable electric service for its rural distribution cooperative members. Its 16 member systems serve more than 185,000 retail consumers located in the Oklahoma Panhandle and an area covering 24 percent of Texas land area including the Panhandle, South Plains and Edwards Plateau Regions.GS Electric Generating Cooperative, Inc. was formed by Golden Spread in 1996 as a wholly owned affiliate to engage in exempt wholesale generating activities. GSEGC is a 50 percent owner of the 480 megawatt Mustang Station, a gas-fueled, combined cycle generating plant located near Denver City, Texas.Yoakum Electric Generating Cooperative, Inc. was formed in 2005, also as a wholly-owned affiliate to own and operate Mustang Station Unit 4, a new 150 megawatt combustion turbine-generator. The generating unit was completed in 2006, and in 2007 Mustang Station Unit 5, a second 150 megawatt combustion turbine-generator, was completed at the same site.

Aqua-Pure Ventures has developed a patented wastewater distillation process used in wastewater recycling. Primarily used for industrial applications, Aqua-Pure's Clear Solutions system provides evaporation technology that can easily mix with other wastewater-treatment methods. Among its many uses, Clear Solutions may be applied for treating medical wastewater and for seawater desalination. In North America Aqua-Pure distributes the Salsnes Filter, used by municipalities and industrial companies for treating wastewater. This technology, developed by the Salsnes company in Norway, can be installed in new plants or mixed with technology already in use.

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