Pepco Holdings has more power than any politician in the populace of the US capital. The holding company distributes electricity and natural gas through its Potomac Electric Power (Pepco), Delmarva Power & Light, and Atlantic City Electric utilities to about 1.9 million customers in Delaware, Maryland, New Jersey, and Washington, DC. Nonregulated operations include independent power production, wholesale and retail energy marketing, and energy management services, through the company's Pepco Energy Services units.

UIL Holdings, parent of electric utility The United Illuminating Company (UI), hopes its well regulated business will result in regular revenue growth. The public utility distributes electricity to 325,000 customers in southwestern Connecticut. Its service area, largely urban and suburban, includes the principal cities of Bridgeport (population 137,000) and New Haven (population 124,000) and their surrounding areas. UIL Holdings has teamed up with NRG Energy to form GenConn Energy LLC, a joint venture that focuses on developing new power generation facilities in Connecticut. In 2010 the company acquired three gas utilies in New England from IBERDROLA USA for $1.3 billion.

Integrys Energy Group, Inc., through its subsidiaries, operates as a regulated electric and natural gas utility company in the United States and Canada. It provides natural gas utility services in Chicago, Wisconsin, Michigan, and Minnesota. As of December 31, 2009, Integrys Energy Group, Inc. served approximately 1,669,000 residential, commercial and industrial, transportation, and other customers. It had approximately 22,000 miles of natural gas distribution mains; and approximately 1,010 miles of natural gas transmission mains. The company also generates and distributes electric energy form coal, natural gas, fuel oil, hydroelectric, and wind resources in Wisconsin and Michigan. It served approximately 489,000 residential, commercial and industrial, wholesale, and other customers. In addition, Integrys Energy offers nonregulated energy supply and services; and electric transmission services. Integrys Energy Group, Inc. was formerly known as WPS Resources Corporation and changed its name to Integrys Energy Group, Inc. in February 2007. Integrys Energy Group, Inc. was founded in 1883 and is based in Chicago, Illinois.

Beacon Power Corporation designs, develops, and commercializes advanced products and services to support stable and reliable electricity grid operation in North America. The company primarily focuses on commercializing its patented flywheel energy storage technology for storing and transmitting kinetic energy. It provides Smart Energy Matrix, a non-polluting, megawatt-level, and utility-grade flywheel-based energy storage system that provides sustainable frequency regulation services. The company’s energy storage and power conversion solutions provide electric power for the utility, renewable energy, and distributed generation markets. Beacon Power Corporation was founded in 1997 and is headquartered in Tyngsboro, Massachusetts.

Kenergy kens energy, as the Scots might say. Electric distribution cooperative Kenergy serves about 55,000 customers in 14 counties (Breckinridge, Caldwell, Crittenden, Daviess, Hancock, Henderson, Hopkins, Livingston, Lyon, McLean, Muhlenberg, Ohio, Union and Webster) in Western Kentucky. Kenergy serves its customer base of households, commercial enterprises, and industries via more than 6,700 miles of power lines. The customer-owned company is part of Touchstone Energy Cooperatives, a national alliance of more than 600 local, consumer-owned electric utility cooperatives.

Black Hills Power has been delivering energy for over 125 years. It was formed through the consolidation of several smaller electric suppliers in the Black Hills of South Dakota, Montana and Wyoming. Black Hills Power is an investor-owned utility and is part of the Black Hills Corporation family. The utility serves 63,500 customers in 20 communities located in Western South Dakota, Northern Wyoming, and Southeastern Montana.Our customers use 1,501,805,000 kilowatt hours (kWh) of electricity at an average price of $0.0714 per kWh. Cost containment efforts and customer load growth have provided our customers with stable residential electricity costs and our commercial electricity costs that are declining in real terms, and have remained stable for the last 11 years.

Transportadora de Gas Del Sur S.A. engages in the transportation of natural gas, as well as production and commercialization of natural gas liquids primarily in Argentina. It operates approximately 8627 km long pipeline system. Transportadora company transports its natural gas to distribution companies, industries, traders, producers, and power plant operators. The company’s production and commercialization activities are conducted at the Cerri Complex located near Bahia Blanca. Its natural gas liquid products comprise ethane, propane, butane, and natural gasoline. It also provides midstream services, which consist of gas treatment, gas compression, and wellhead gas gathering services; removal services for impurities from the natural gas stream; and pipeline construction, operation, and maintenance services. In addition, the company offers telecommunication services for telephone operators and other corporate users. Its telecommunication network includes a microwave's digital system with synchronous digital hierarchy technology. Transportadora company was founded in 1992 and is based in Buenos Aires, Argentina. Transportadora de Gas Del Sur S.A. is a subsidiary of Compania de Inversiones de Energia S.A.

NorthWestern, once a holding company for several energy-related businesses, is now blowing in one direction only -- providing power and gas through regulated utilites. Through its NorthWestern Energy subsidiary, the company provides electricity and natural gas to about 661,000 customers in Montana, Nebraska, and South Dakota. In Montana it delivers electricity to approximately 335,000 customers in 187 communities and surrounding rural areas, 15 rural electric cooperatives, and in Wyoming to the Yellowstone National Park. NorthWestern delivers gas to 180,100 Montana customers. In Nebraska and South Dakota it sells natural gas to 85,5100 customers.

Seprotech Systems gets the salt out of old salts' drinking water. Designing, manufacturing, and producing water and wastewater treatment systems, Seprotech Systems serves a variety of markets, including industry, the military, municipalities, property development, and mining. Among its projects has been the repair and overhaul of shipboard reverse osmosis desalination units for the Canadian Navy. Seprotech Systems' Clementine transportable, containerized wastewater treatment plant is useful for mining camps, foreign-aid missions, and other remote work sites. It also has a water utilities unit, formed after the 2009 acquisition of Envirosearch. Seprotech Systems was founded in 1985.

Public Utility District No. 1 of Chelan County, Washington (or Chelan County PUD) provides power and water to residents of the county located in the middle of the Evergreen State. The utility operates three hydroelectric-generation facilities on or near the Columbia River that have a combined capacity of about 2,000 MW. About 30% of the district's electricity goes to its more than 47,000 residential, commercial, and industrial customers; the rest is sold wholesale to other utilities operating in the northwestern US. Chelan County PUD also provides water and wastewater services to about 5,700 customers.

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