China Yangtze Power co. (CYPC) generates hydropower on the Yangtze River from its two hydropower plants -- The Three Gorges Power Plant and Gezhouba Power Plant. CYPC oversees China's Three Gorges Dam project (the world's largest hydroelectric dam) on behalf of China Yangtze Three Gorges Development, which holds more than 60% of CYPC. In addition the company also provides production technology consultancy, water electric construction support, and repair and maintenance services. It also manages and invests in other power projects. CYPC manages a generating capacity of about 12,600 MW. The company was founded in 2002.

Società Azionaria per la Condotta di Acque Potabili provides non-potent potables for Italian citizens and industrial plants. Acque Potabili provides water services to more than 100 municipalities in the country, which have more than 800,000 residents combined; its water distributors include Acquedotto Monferrato and Acquedotto di Savona. Italgas, which is controlled by energy conglomerate Eni, owned a 67% stake in Acque Potabili, but has since sold it to Azienda Mediterranea Gas e Acqua (AMGA) and Società Metropolitana Acque Torino (SMAT). The company's other major shareholders include Vivendi (14%) and ACEA (14%).

Pacific Northern Gas (PNG) provides natural gas in west-central and northeastern British Columbia. The utility serves more than 39,100 residential, commercial, and industrial customers over its transmission and distribution system. Its large industrial customers include timber company West Fraser and metals maven Rio Tinto Alcan. In 2008 these customers accounted for about 26% of PNG's annual total gas deliveries and more than 5% of its revenues. British Columbia Hydro and Power Authority (BC Hydro) is also a major customer. Most of PNG's customers buy gas directly from producers or suppliers but contract with PNG to have it pipelined to them. Pacific Northern Gas Ltd. entered the renewable power business in 2010.

Cambridge Water distributes water to about 125,000 residential customers and business customers in the greater Cambridge area. Overall, the company serves a population of about 300,000. Cambridge Water maintains some 2,140 km of water mains and 34 storage towers and reservoirs. All the water supplied to customers is pumped from 25 underground sources. About 55% of water billed is charged by meter. The company offers its clients the delivery of emergency bottled water; customers pre-order water that Cambridge Water will deliver in the event of a major incident. The company is controlled by Cheung Kong Infrastructure Holdings.

Global Energy is generating power outside of the box. The alternative energy company creates clean energy solutions using gasification technologies. Gasification and IGCC (Integrated Gasification Combined Cycle) facilities convert carbon fuel sources (including coal, petroleum coke (petcoke), and renewables) into environmentally cleaner energy sources like synthetic gas (SG) and synthetic natural gas (SNG). Through subsidiary Wabash River Energy, Global Energy owns and operates the Wabash River Plant (Indiana), one of only two IGCC facilities in the US. It also owns the Westfield Plant (Fife, Scotland) and is constructing a 540-MW IGCC facility in Lima, Ohio, expected to be operational by 2010.

Scottish Water provides water and wastewater services to 5 million customers in 2.4 million homes. The company, which is the one of five largest water utilities in the UK, operates about 29,340 miles of water mains, 31,150 miles of sewers, 300 water treatment works, and more than 1,900 wastewater treatment works. The government-owned company, which is overseen by the Scottish Parliament, is focusing on upgrading its provision of clean drinking water, making its services more efficient and helping to improve the environment by protecting the watersheds that supply the company's water.

Marietta Board of Lights and Water (doing business as Marietta Power and Water) to provide electricity and water to residents and businesses in the city of Marietta, and the counties of Marietta and Cobb. The municipal utility operates through two divisions: Marietta Power distributes electricity to more than 45,000 customers and purchases power from the Municipal Electric Authority of Georgia (MEAG Power), and Marietta Water provides water supply and wastewater collection services to more than 17,000 customers.

Tokyo Electric Power Company (TEPCO), which supplies power to a population of 44 million customers in Tokyo, Yokohama, and the rest of the Kanto region. One of the world's largest electric utilities, TEPCO's 190 power plants have the generating capacity of approximately 64,000 MW, primarily produced by thermal, nuclear, and hydroelectric power sources. Through interests in telecom businesses, the company offers telephony and Internet services; it also has international consulting and power generation operations. Other businesses include construction, real estate, and transportation companies. It also invests in independent power producers in other countries.

American Water Works Company, Inc. provides water and wastewater services to residential, commercial, and industrial customers in the United States and Canada. As of December 31, 2009, the company served approximately 16 million people with drinking water, wastewater, and other water-related services in 35 states and two Canadian provinces. It owned approximately 80 surface water treatment plants, 600 groundwater treatment plants, 1,200 groundwater wells, 50 wastewater treatment facilities, 1,200 treated water storage facilities, 1,200 pumping stations and 100 dams, and 49,000 miles of mains and collection pipes. American Water Works Company also enters into public/private partnerships, including operation and maintenance contracts; and design, build, and operate contracts for the provision of services to water and wastewater facilities for municipalities and the United States military. In addition, the company designs, builds, and operates smaller-scale water and wastewater treatment plants for real estate developers, industrial companies, and new or expanding communities; and provides services to domestic homeowners to protect against the cost of repairing broken or leaking pipes inside and outside their homes. Further, it provides granular activated carbon for water purification, and involves in the management and disposal of biosolids and wastewater by-products for municipal and industrial customers. The company was founded in 1886 and is based in Voorhees, New Jersey.

Calpine Corporation, an independent wholesale power generation company, engages in the ownership and operation of natural gas-fired and geothermal power plants in North America. It generates electricity and produces steam from natural gas-fired combustion and renewable geothermal facilities. The company sells wholesale power, steam, capacity, renewable energy credits, and ancillary services to utilities, independent electric system operators, industrial and agricultural companies, retail power providers, municipalities, and power marketers. As of December 31, 2009, the company had a portfolio of 77 operating power plants with an aggregate generation capacity of approximately 24,802 megawatts. Calpine Corporation was founded in 1984 and is based in Houston, Texas.

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