Memphis Light, Gas and Water Division (MLGW) helps lighten up the Memphis blues. The municipally owned utility provides electricity, water, and natural gas services for all of Shelby County, Tennessee, including the city of Memphis. It serves primarily residential and commercial customers. MLGW buys electricity from the Tennessee Valley Authority (TVA) and distributes it to more than 420,000 customers. The company purchases natural gas on the spot market, transmits it through open access pipelines, and delivers it to about 320,000 customers. Through its artesian water system, MLGW supplies water to more than 257,000 customers.

Let's cut right to the point: construction materials and mining used to be the lifeblood of Knife River Corporation, but in recent years, its energy and utility operations have grown to be the largest portion of its business. Oil and natural gas production, power transmission, pipelines and power utilities now dominate Knife River's balance sheet. But don't count out its construction services division, which continues to produce record earnings. Knife River has operations in Alaska, Hawaii, Oregon, California, Idaho, Minnesota, Montana, North Dakota, Oregon, Texas, and Wyoming. The company is a subsidiary of MDU Resources Group, Inc.

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, and Hawaii. It engages in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection. The company also provides non-regulated water-related services, including the operation of water and recycled water systems; leasing communication antenna sites on its properties; meter reading and billing services; sewer and refuse billing services; lab services for water quality testing; selling surplus property; and the marketing and billing of third party insurance programs to residential customers. As of December 31, 2009, it served approximately 467,100 customers in 83 communities in California; 15,600 customers in the Tacoma and Olympia areas in Washington; 7,800 water and wastewater customers in the Belen, Los Lunas, and Elephant Butte areas in New Mexico; and 4,200 water and wastewater customers on the islands of Maui and Hawaii. The company was founded in 1926 and is headquartered in San Jose, California.

RainSoft (a division of Aquion Water Treatment Products) wants to clear up the water in your home or office. Through its division, the company makes residential and commercial water treatment equipment. Products include whole-house water conditioning systems, drinking water systems, and filters designed to remove particular contaminants that detract from water's taste and odor. RainSoft's products are distributed through a network of about 300 independent dealers in the US and in 24 countries in Asia, Europe, and the Middle East. Clients have included Allstate , Dow Chemical, Ford Motor, Holiday Inn, and Underwriters Laboratories.

CLP Holdings Limited, through its subsidiaries, engages in the generation, supply, transmission, and distribution of electricity in Hong Kong, Australia, and India. The company also invests in various power projects located in the Chinese mainland, southeast Asia, and Taiwan. It invests in various power generating assets, including nuclear, pumped storage, coal-red, hydro, wind, and biomass. In addition, the company engages in the provision of engineering services; retail of electricity and gas; and storage of gas. As of December 31, 2009, it generated 6,908 megawatts of electricity; had interests in approximately 13,000 kilometers of transmission and high voltage distribution lines; and served 2.3 million customers. The company was founded in 1901 and is based in Kowloon, Hong Kong.

Zephyr Environmental provides consulting, training, and data systems services relating to such areas as air quality, water quality, business protection programs, environmental health and safety, risk management, waste management, and regulatory tracking. The company has undertaken projects for clients in North and South America, Europe, the Middle East, and the Asia/Pacific region. Customers have included oil and gas companies, as well as companies in the cement manufacturing, chemical, pharmaceutical, and semiconductor industries. Zephyr Environmental operates from offices in Texas (Austin and Houston) and in Maryland. It also maintains an office in Dubai.

Fortis wields power. The group has holdings in 10 companies, primarily regulated electricity and gas distributors, serving about 2 million customers. Its Terasen unit is the major natural gas distribution utility in British Columbia and serves approximately 940,000 customers. Newfoundland Power utility distributes electricity to 240,000 people, while Maritime Electric serves customers on Prince Edward Island. FortisOntario serves parts of Ontario, and FortisAlberta distributes electricity to 480,000 customers in Alberta. FortisBC generates, transmits, and distributes electricity in southern British Columbia. Fortis Generation operates hydroelectric plants, and Fortis Properties runs hotels in Canada.

Show me the power. Cuivre River Electric Cooperative provides power to four eastern counties in the "Show Me" state: Lincoln, Pike, St. Charles, and Warren. The membership utility, which is one of Missouri's largest cooperatives with more than 58,000 residential, commercial, and industrial customers, gets its wholesale power supply from the Associated Electric Cooperative and the Central Electric Power Cooperative. Cuivre River Propane, jointly owned and operated by Cuivre River Electric Cooperative and MFA Oil Company supplies propane to co-op members from four locations, Bowling Green, Elsberry, Troy, and Wright City.

Ocean Power Technologies (OPT) is all about is the company, with offices in the US and UK, uses a proprietary system called PowerBouy to generate electricity using the mechanical energy produced when offshore waves move the anchored buoys up and down. OPT offers a buoy system that connects to power grids as well as an autonomous one that can be used in remote locations and for tsunami monitoring, oceanographic data collection, and offshore aquaculture. Customers include the US Navy, Spanish power producer Iberdrola, and Spanish energy firm TOTAL. It has a contract with Lockheed Martin to build a large power generation system off the west coast of the US.

Companhia de Transmissao de Energia Eletrica Paulista is a true power broker. The company, known as both CTEEP and Transmissao Paulista, delivers power to the state of Sao Paulo. Its 12,140 kilometers of power lines and 100 substations transmit 30% of the electricity consumed in Brazil. Transmissao Paulista also participates in research and development projects with other utilities as well as universities and research centers. The company, which is part of Latin American power player Grupo Empresarial ISA, was formed in 1999 after the restructuring of Brazilian electric utilities that split power generation, transmission, and distribution into separate companies.

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