Nature Group (formerly Nature Technology Solutions) provides wastewater treatment services to the oil, shipping, and offshore industries. Its technologies treat various types of industrial, marine, and oil industry waste streams, including using an environmental-friendly additive that helps remove hydrocarbons in oily wastewater. It helps operate port treatment plants in Gibraltar and Tananger, Norway, and a sewage treatment plant in Gibraltar; it is also involved in decommissioning refineries, installing treatment plants, and treating wastewater on offshore rigs.

Tennessee Gas Pipeline (Tennessee) is one of the several interstate pipelines that make up El Paso Corporation’s Pipeline Group. Tennessee is comprised of approximately 14,000 miles and 1.4mm certificated horsepower. The pipeline stretches from the Mexican border to Canada. Tapping supply regions in the Gulf of Mexico, Texas, Appalachia, and Canada, the Tennessee system serves markets across the Midwest and mid-Atlantic regions, including major metropolitan centers such as Chicago, New York, and Boston.Tennessee’s assets receive natural gas supplies from Canada, including Nova Scotia, and emerging liquefied natural gas (LNG) projects along the Gulf Coast and Eastern Seaboard, as well as emerging domestic supplies from several shale regions. Additionally, the company is poised for continued growth as new natural gas-fired power generation facilities are built to meet the increasing electricity demand along its pipeline route. Well connected, Tennessee has more than 100 interconnects with most major interstate and intrastate pipeline systems serving the Midwest, Northeast, mid-Atlantic, and southeastern United States. Tennessee is prepared to meet the demands of a growing market with the integrity and commitment to service that have made it one of the safest and most reliable pipelines in the United States.

GenOn Energy, Inc. operates as a generator of wholesale electricity in the United States. Its portfolio of power generation facilities include baseload, intermediate, and peaking units using coal, natural gas, and oil to generate electricity. The company owns, contracts, or operates approximately 49 power generation stations with generation capacity of 24,599 megawatts. The company was formerly known as Mirant Corporation and changed its name to GenOn Energy, Inc. on December 4, 2010. The company is based in Houston, Texas.

Red El�ctrica de Espa�a (REE) owns and operates most of the country's power transmission grid. REE's system includes more than 34,300 kilometers of high-voltage transmission lines and more than 3,100 substation circuit bays. T-Online acquired REE's 10,000-kilometer fiber-optic network, which runs alongside the utility's power lines and is used to offer broadband telecom services, in 2005. However, REE's sister company Red El�ctrica Internacional, is contrtacted to continue maintenance of this network until 2016.

American Electric Power Company, Inc. engages in the generation, transmission, and distribution of electric power. It generates electricity using coal and lignite, natural gas, nuclear, and hydroelectric energy. The company distributes electric power at wholesale to other electric utility companies, rural electric co-operatives, municipalities, and other market participants, as well as to retail customers in its service areas. It also operates nonregulated wind farms and barging operations, as well as provides various energy-related services. The company operates in the states of Arkansas, Indiana, Kentucky, Louisiana, Michigan, Ohio, Oklahoma, Tennessee, Texas, Virginia, and West Virginia. As of December 31, 2008, it owned or leased approximately 37,000 megawatts of power generation capacity. The company was founded in 1906 and is based in Columbus, Ohio.

Powerco is the second-largest distributor of electricity and gas in New Zealand (behind state-owned Genesis Energy). Powerco's network extends across the upper central and lower central North Island and services to 415,000 customers. Its infrastructure represents about 46% of the gas connections and 16% of the electricity connections in New Zealand. The company's Powerco Transmission Services unit is a leading provider of wind farm connections to New Zealand's national grid. Powerco is 58%-owned by investment firm Queensland Investment Corp. and 42% by Australia-based infrastructure group Babcock & Brown Infrastructure.

The Intermountain Gas Company story began in 1950 when Nat and Myrtis Campbell read a newspaper article that piqued their interest in the natural gas industry. Intermountain Gas Company was incorporated that year. After five years of hard work laying the foundation for a new public utility company, Intermountain Gas Company received certification from the Idaho Public Utilities Commission on December 10, 1955. Then, on December 31, 1955, we connected our first five customers. Since then, Intermountain Gas Company has grown along with Idaho. Today, Intermountain Gas Company is a natural gas distribution company serving approximately 305,000 residential, commercial, and industrial customers in 74 communities in southern Idaho. Intermountain is a subsidiary of MDU Resources Group, Inc., a multidemensional natural resources enterprise traded on the New York Stock Exchange as "MDU", www.mdu.com.

Utilities' formula for success is H-2-O. As one of the largest privately owned water and wastewater companies in the US, Utilities owns about 90 subsidiaries that operate more than 500 systems in 15 states, mainly east of the Mississippi. The company serves more than 300,000 customers. About half of the company's revenues come from water services and the other half from wastewater services; residential customers account for approximately 90% of sales. Utilities also provides reuse water for irrigation purposes and for golf courses and car washes. Expanding its coverage, in 2009 the company acquired the sewer collection system assets of Sewerage District No. 6 in Louisiana.

British Columbia Hydro and Power Authority, which operates as BC Hydro, distributes electricity to the 1.8 million residential and business customers. The province-owned utility owns more than 46,500 miles of transmission and distribution lines, and it operates hydroelectric and fossil-fueled power plants about 11,350 MW of generating capacity. Subsidiary Powerex markets and trades energy throughout North America. To increase efficiencies in green power production, in 2010 BC Hydro consolidated its transmission operations with those of the province-owned British Columbia Transmission. A Crown corporation owned by British Columbia, BC Hydro is regulated by British Columbia Utilities Commission.

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.

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