Allegheny Energy, Inc. owns and operates electric generation facilities, and delivers electric services to customers in Pennsylvania, West Virginia, Maryland, and Virginia. The company owns or contractually controls coal-, gas-, and oil-fired generation facilities, as well as hydro generation facilities. It operates in two segments, The Merchant Generation and The Regulated Operations. The Merchant Generation segment owns, operates, and manages electric generation facilities, as well as purchases and sells energy and energy-related commodities. This segment markets its electric generation capacity to various customers and markets, including certain of its affiliates, as well as uses both derivative and nonderivative contracts to manage its portfolio of contracts. As of December 31, 2009, it owned or contractually controlled 7,015 megawatts of generation capacity. The Regulated Operations segment operates electric public utility systems that include electricity generation, transmission, and distribution facilities. As of December 31, 2009, it owned or contractually controlled 2,741 megawatts of generation capacity. This segment served approximately 383,600 customers in northern West Virginia; approximately 483,400 customers in portions of West Virginia, Maryland, and Virginia; approximately 102,000 customers in northern Virginia; and approximately 714,900 customers in southwestern, south-central, and northern Pennsylvania. The company is headquartered in Greensburg, Pennsylvania.

Suffolk County Water Authority provides water services to 375,600 homes and businesses (more than 1.2 million people) in New York's Suffolk County, on the eastern end of Long Island. The water authority's system (the largest water system in the nation operating entirely with groundwater) includes more than 5,500 miles of mains. The authority also runs the largest groundwater testing facility in the US. Suffolk County Water Authority is a public benefit corporation of the state of New York.

MidAmerican Energy Holdings reaches farther than its name implies. The company generates, transmits, and distributes electricity and natural gas to 6.9 million customers across the US and the UK, primarily through subsidiaries MidAmerican Energy Company, PacifiCorp, and CE Electric UK. UK regional distribution subsidiaries Northern Electric and Yorkshire Electricity serve about 3.8 million electricity customers. MidAmerican Energy Holdings also has independent power production; real estate (HomeServices of America); and gas exploration, production, and pipeline operations (Kern River Gas Transmission and Northern Natural Gas). Warren Buffett's Berkshire Hathaway controls the company.

Viridian Group, through its main subsidiary, regulated regional electric company Northern Ireland Electricity (NIE), transmits and distributes power to about 793,000 homes and businesses in Northern Ireland. Its NIE Energy Supply unit is the regulated electricity supplier in Northern Ireland. Viridian is also involved in unregulated businesses, including retail power and natural gas marketing (Energia) and high-voltage electrical infrastructure contracting (Powerteam). It also participates in Ireland's electricity market through its Energia subsidiary, which deals in both retail and wholesale energy. In 2010 Irish power utility ESB Group acquired NIE from Viridian for $1 billion.

Southern California Edison (SCE) distributes electricity to a population of more than 13 million people in central, coastal, and Southern California (excluding Los Angeles and some other cities in the regions). The utility's system consists of about 12,000 circuit miles of transmission lines and more than 113,500 circuit miles of distribution lines. SCE also has 5,500 MW of net generating capacity from interests in nuclear, hydroelectric, and fossil-fueled power plants; it sold most of its fossil-fueled facilities in response to the state's deregulation legislation. The utility sells excess power to wholesale customers. SCE is a subsidiary of Edison International.

TransCanada Corporation operates as an energy infrastructure company in North America. The company operates in two segments, Pipelines and Energy. The Pipelines segment develops and operates energy infrastructure, including natural gas pipelines, regulated gas storage facilities, and projects related to oil pipelines. As of December 31, 2009, its pipelines network extended approximately 60,000 kilometers tapping into various gas supply basins in North America. The Energy segment engages in the acquisition, development, construction, ownership, and operation of electrical power generation plants; the purchase and marketing of electricity; the provision of electricity account services to energy and industrial customers; and the development, construction, ownership, and operation of non-regulated natural gas storage in Alberta. As of December 31, 2009, its power generation plants had 11,700 megawatts of power generation capacity. TransCanada Corporation was founded in 1951 and is headquartered in Calgary, Canada.

Sociedad General de Aguas de Barcelona, S.A. (Agbar) distributes water to more than 12 million people (almost 19 million during tourist season) and provides wastewater services for more than 6.2 million people. The company also has stakes in water businesses in Chile and the UK. Agbar has sold its solid-waste collection and treatment operations in order to focus on its core water business. Activities in Spain account for about 83% of the company's sales. Agbar is 66%-owned by Holding de Infraestructuras y Servicios Urbanos S.A.

Seeking fame and fortune in and outside Finland, energy powerhouse Fortum generates electric power across the region. In the Baltic Rim its power plants create electricity (more than 10,980 MW of generation capacity), and heat. Fortum distributes electricity to 1.6 million customers (primarily in Estonia, Finland, Norway, and Sweden). The company also has significant operations in a growth area, Russia, including 2,785 MW of power generation capacity. (Russia accounted for about 9% of Fortum's total revenues in 2009). Fortum has divested its oil and engineering assets in order to focus on its core power and heating businesses.

MMC likes to be m-m-good at what it does. MMC Corporation Berhad concentrates on transport and logistics, energy and utilities, and engineering and construction. Many of its operating companies are the largest or only players in their markets. Its key components are Pelabuhan Tanjung Pelepas (shipping container port), Malakoff (power production), Johor Port (the leading multi-purpose port in Malaysia), and Gas Malaysia (sole non-industrial natural gas supplier in Malaysia). MMC is also involved in flood mitigation, traffic management, and power plant construction projects (through Zelan Construction).

ThermoEnergy Corporation, a clean technologies company, develops municipal and industrial wastewater treatment systems, and carbon reducing clean energy technologies worldwide. The company's technologies include Zero Emission Boiler system, which converts fossil fuels and biomass into electricity without producing air emissions, as well as removes and captures carbon dioxide in liquid form for sequestration or beneficial reuse; and Controlled Atmosphere Separation Technology (CAST), R-CAST, and proprietary water technologies. Its technologies also comprise Ammonia Recovery Process technology that captures ammonia from dilute waste streams and converts it into ammonium sulfate; ThermoFuel Process, a renewable energy process, which converts digested or waste activated sewage sludge into an energy fuel that could be converted into electricity for use on-site or sold as a feedstock to third party industrial clients; and Enhanced Biogas Production process, which retrofits existing wastewater treatment plants to recover excess ammonia from the digesters. The company's wastewater treatment systems are used in the aerospace, food and beverage processing, metal finishing, pulp and paper, petrochemical, refining, microchip and circuit board manufacturing, heavy manufacturing, and municipal wastewater applications. Thermoenergy Corporation has a strategic alliance with Contego Systems LLC to provide solutions for airplane deicing. The company was founded in 1988 and is headquartered in Little Rock, Arkansas.

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