LifeSource Water Systems uses is customer satisfaction. The water treatment product company manufactures and distributes water filtration equipment to residential, commercial, and industrial customers. LifeSource Water Systems' system uses an activated carbon filter rather than salts or chemicals. Its Beotron branded systems have earned the Gold Seal certification issued by the Water Quality Association. The company operates primarily in California; it also maintains outlets in Idaho and Nevada. LifeSource Water Systems was founded in 1984.

Consolidated Water Co. Ltd. and its subsidiaries develop and operate seawater desalination plants and water distribution systems, as well as produce and supply water to customers in the Cayman Islands, the Bahamas, Belize, the British Virgin Islands, and Bermuda. It uses reverse osmosis technology to convert seawater to potable water. The company supplies water to end-users, including residential, commercial, and government customers. As of December 31, 2009, Consolidated Water Co. operated 16 reverse osmosis desalination plants through its subsidiaries and affiliates. It also offers engineering and management services, including designing and constructing desalination plants, and managing and operating desalination plants owned by other companies. The company was founded in 1973 and is based in Grand Cayman, Cayman Islands.

Omaha Public Power District (OPPD), a subdivision of the Nebraska state government, OPPD generates and distributes electricity to residents and businesses in 13 counties in southeastern Nebraska. It operates and maintains its facilities without tax revenues and raises money for major construction through bonds. OPPD serves more than 340,000 customers in an area covering 5,000 sq. mi. The utility has a generating capacity of more than 3,220 MW, which is powered by nuclear, coal, oil, and natural gas sources. It sells wholesale power to other utilities and offers energy consulting and management services.

Companhia Paranaense de Energia – Copel engages in the generation, transmission, distribution, and sale of electricity for industrial, residential, commercial, and rural customers primarily in the State of Parana, Brazil. It owns and operates 18 power plants, including 17 hydroelectric power plants and 1 thermal power plant with an installed capacity of 4,550 MW; transmission system comprising 1,913 km of transmission lines and 30 substations; and distribution system, including 180,696 km of distribution lines and 350 substations. The company serves approximately 3,671,262 consumers. It also provides telecommunication and communication services consisting of broadband Internet, private networks IP/MPLS-VPN, videoconference, and hosting services to schools, banks, supermarkets, Internet providers, industries, public bodies, stores, and fixed and mobile telephone operators. In addition, company has 6,026 km of OPGW cables, installed between the main ring and urban radials, totaling 10, 054 km and reaching 226 cities Parana. Further, it distributes piped gas. The company was founded in 1954 and is headquartered in Curitiba, Brazil.

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.

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.

AEA Technology has hitched its wagon to the climate change star, focusing on government and private sector efforts to combat global warming, develop low-carbon processes, and monitor carbon and emissions trading. AEA Technology offers consulting, program management, and emergency response services for commercial, government, and industrial customers. Other areas of expertise include agriculture, health, business innovation, and transport. It is a major provider of advisory services to the UK government on climate change issues and technologies.

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.

BlueStar Energy intends to burn bright in the firmament of independent electricity providers. Serving customers in the deregulated markets of Maryland, Illinois, Pennsylvania, and Washington, DC, the company offers variable- and fixed-rate and custom plans along with green energy to industrial, commercial, and residential customers. Its energy efficiency program examines customers' energy usage and offers services to decrease costs including reworking interior and exterior lighting, monitoring power use, rewiring fixtures, and performing exterior maintenance. BlueStar Energy spreads it power from offices in Chicago and Peoria, Illinois.

Siemens Water Technologies Corp. company is a leading producer of water- and wastewater-treatment equipment worldwide. Through its Water and Wastewater Systems and Water Services and Products groups, Siemens Water Technologies provides services to municipal, industrial, and institutional clients. It has more than 200,000 installations on several continents and a portfolio of more than 900 water treatment products and technologies. Among its other services are ion exchange resin recycling and thermal reactivation processes that reduce carbon expenditure. The company is a subsidiary of Siemens Industry.

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