Calpine Corporation is helping meet the needs of an economy that demands more and cleaner sources of electricity. Founded in 1984, Calpine is a major U.S. power company, currently capable of delivering nearly 24,000 megawatts of clean, cost-effective, reliable, and fuel-efficient... more

FuelCell Energy, Inc. (FuelCell Energy) is engaged in the development and manufacturing of fuel cell power plants for electric power generation. The products are designed to meet the 24/7 baseload power needs of commercial, industrial, government and utility customers. The products have... more

Entergy Corporation is an integrated energy company engaged primarily in electric power production and retail distribution operations. Entergy owns and operates power plants with approximately 30,000 megawatts of electric generating capacity, and it is the second-largest nuclear power... more

Duke Energy Corporation (Duke Energy) is an energy company located in the Americas that provides its services through four business units. The Company’s business units are U.S. Franchised Electric and Gas, Commercial Power, International Energy and Duke Energy’s 50% interest in the... more

Petrobras (www.Petrobras.com) is among the world's largest integrated oil and gas companies, engaging in a broad range of activities, including exploration, development, and production of crude oil and natural gas; refining, transportation, and wholesale marketing of crude oil, natural... more

Xcel Energy Inc. (Xcel) is a holding company, with subsidiaries engaged in the utility business. During the year ended December 31, 2007, Xcel Energy's operations included the activity of four wholly owned utility subsidiaries that serve electric and natural gas customers in eight states.... more

American Electric Power Company, Inc. (AEP) is a public utility holding engaged in the generation, transmission and distribution of electric power to retail customers, and supplying and marketing of electric power at wholesale to other electric utility companies, municipalities and other... more

Based in Kansas City, Mo., Aquila operates electricity and natural gas distribution utilities serving 1.3 million customers in seven U.S. states. The company also owns and operates power generation assets.

With manufacturing facilities in 43 countries and a sales network in more than 100, AREVA offers customers reliable technological solutions for CO2-free power generation and electricity transmission and distribution. We are the world leader in nuclear power and the only company to cover... more

Founded in 1997 to change the way power is made, Green Mountain Energy Company is one of the nation's leading retail providers of cleaner electricity products, offering residential, business, institutional and governmental customers the choice to support cleaner electricity generated from... more

Exelon Corporation (Exelon) is a utility services holding company. It operates through its principal subsidiaries Exelon Generation Company, LLC (Generation), Commonwealth Edison Company (ComEd) and PECO Energy Company (PECO). Generation’s business consists of its owned and contracted... more

Enbridge Inc. (Enbridge) is an energy delivery company that transports natural gas and crude oil, which are used to heat homes, power transportation systems, and provide fuel and feedstock for industries. The Company’s activities are carried out through five business units: Liquids... more

Kinder Morgan, Inc. is one of the largest midstream energy companies in America, operating more than 35,000 miles of natural gas and products pipelines in 26 states. It also has significant retail distribution, electric generation and terminal assets. Kinder Morgan, Inc., through its... more

The Williams Companies, Inc. (Williams) is a natural gas company. The Company primarily finds, produces, gathers, processes and transports natural gas. Its operations are concentrated in the Pacific Northwest, Rocky Mountains, Gulf Coast and the Eastern Seaboard. Its activities are... more

NRG Energy, Inc. (NRG) is a wholesale power generation company. NRG is engaged in the ownership, development, construction and operation of power generation facilities, the transacting in and trading of fuel and transportation services, and the trading of energy, capacity and related... more

National Grid is an international energy delivery company. In the U.S., National Grid delivers electricity to approximately 3.3 million customers in Massachusetts, New Hampshire, New York and Rhode Island, and manages the electricity network on Long Island under an agreement with the Long... more

ONEOK, Inc. purchases, transports, stores and distributes natural gas. The Company’s largest distribution markets are Oklahoma City and Tulsa, Oklahoma; Kansas City, Wichita and Topeka, Kansas, and Austin and El Paso, Texas. Its energy services operation is engaged in wholesale and retail... more

Devon Energy Corporation (Devon) is an independent energy company engaged primarily in oil and gas exploration, development and production, the acquisition of producing properties, the transportation of oil, gas and natural gas liquids and the processing of natural gas. Devon owns oil and... more

CEI is the leading national marketer of wind-generated power. CEI markets power from most of the wind farms in the mid-Atlantic and New York. Marketing under the NewWind Energy� brand, CEI partners with leading electric suppliers to offer a wind energy choice directly to retail electric... more

The Southern Company (Southern Company) owns all of the outstanding common stock of Alabama Power, Georgia Power, Gulf Power, and Mississippi Power, each of which is an operating public utility company. The traditional operating companies supply electric service in the states of Alabama,... more

The AES Corporation (AES) is a global power company. It owns a portfolio of electricity generation and distribution businesses on five continents and in 28 countries. During the year ended December 31, 2007, the Company had a generation capacity totaling approximately 43,000 Megawatts.... more

Dynegy Inc. (Dynegy) is engaged in the production and selling of electric energy, capacity and ancillary services from the fleet of 29 operating power plants in 13 states totaling nearly 20,000 megawatt of generating capacity. The Company conducts its operations through its subsidiary,... more

With 31 million customers in France and sales revenue of over 34 billion Euros (including 23% outside France) for a power output of nearly 470 billion kWh and investments abroad, the EDF Group (Electricité de France) is one of the world's leading energy groups.

EPCOR Power L.P. (the Partnership) is a limited partnership. The Partnership has an ownership interest in a portfolio of 20 power generation assets in Canada and the United States. These facilities generate electricity which is sold under long-term contracts. The Partnership’s power... more

in California in 1905, is one of the largest combination natural gas and electric utilities in the United States.

Mirant is a competitive energy company that produces and sells electricity in the United States, the Caribbean, and the Philippines. Mirant owns or leases approximately 13,900 megawatts of electric generating capacity globally. The company operates an asset management and energy marketing... more

Based in Cincinnati, Ohio, Cinergy Corp. (NYSE:CIN) is one of the nation's leading diversified energy companies. Cinergy has a focused strategy intent on growing its energy merchant business. The company owns, operates or has under development over 21,000 megawatts of generation. Cinergy... more

CenterPoint Energy, Inc. is a public utility holding company. Its indirect wholly owned subsidiaries include CenterPoint Energy Houston Electric, LLC (CenterPoint Houston), which engages in the electric transmission and distribution business in a 5,000-square mile area of the Texas Gulf... more

Sempra Energy (Sempra) is an energy services holding company that, through its subsidiaries, develops energy infrastructure, operate utilities, and provide related products and services. The Company has five separately managed segments comprising Southern California Gas Company... more

Great River Energy, headquartered in Elk River, Minn., is the second largest electric utility in state, based on generating capacity, and the fifth largest generation and transmission (G&T) cooperative in the U.S. in terms of assets. Here are directions to our Elk River headquarters.... more

Reliant Energy (NYSE: REI), based in Houston, Texas, is an international energy services and energy delivery company with $20 billion in annual revenue and assets totaling $30 billion. The company has a wholesale energy trading and marketing business that ranks among the top five in the... more

KeySpan owns and operates more than 6,000 MW of electric power generation on Long Island and in New York City, and provides management of the electric transmission and distribution (T&D) system, and customer services, to the Long Island Power Authority's 1.1 million customers. The... more

ALSTOM is the global specialist in energy and transport infrastructure. The Company serves the energy market through its activities in the fields of power generation, power transmission and distribution, power conversion and the transport market through its activities in rail and marine.... more

The PJM Interconnection, LLC is an Independent System Operator, administering the PJM Open Access Transmission Tariff and operating the PJM Energy and Capacity Markets. PJM currently administers almost eight percent of the country's electric power, with a pooled generating capacity of... more

E.ON AG (E.ON) is an industrial group in Germany, primarily engaged in the energy business. The Company's operations are organized into separate market units: Central Europe, providing energy in the Netherlands, Hungary, Slovakia, the Czech Republic and Switzerland; Pan-European Gas,... more

RWE is one of the leading international utility companies. The company provides customers with electricity, gas and water as well as services related to these products. The company's core markets are Germany, the UK and Continental Europe. Major companies and millions of households... more

Dominion Resources, Inc. (Dominion) is a producer and transporter of energy. The Company’s portfolio of assets includes approximately 26,500 megawatts of generation, 6,000 miles of electric transmission lines, 55,000 miles of electric distribution lines in Virginia and North Carolina,... more

Plug Power Inc. together with its subsidiaries, is a development-stage enterprise involved in the design, development and manufacture of fuel cell systems for stationary and motive markets worldwide. The Company is developing a range of fuel cell products and services, including hydrogen... more

Endesa SA is a Spain-based holding company. It is primarily involved in the electricity generation and distribution, gas supply and renewable energy production. Additionally, the Company is active in other business areas, mainly real estate operations, telecommunications and power line... more

British Energy is the UK's largest producer of electricity from its nine power stations, including eight nuclear stations. Generating around one-fifth of the country's electricity, the company employs more than 5,000 people nationwide.

Florida Power & Light Company (FPL) is a rate-regulated utility company engaged primarily in the generation, transmission, distribution and sale of electric energy. The Company is a wholly owned subsidiary of FPL Group, Inc. FPL supplies electric service to a population of more than 8.7... more

An Edison International company, Southern California Edison is the nation's largest electric utility in California, serving a population of more than 13 million via 4.8 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California. The... more

Ontario Power Generation Inc. is an Ontario-based electricity generation company whose principal business is the generation and sale of electricity in Ontario. The company's focus is on the efficient production and sale of electricity from its generation assets, while operating in a safe,... more

NiSource Inc. (NiSource) is an energy holding company whose subsidiaries provide natural gas, electricity and other products and services to approximately 3.8 million customers located within a corridor that runs from the Gulf Coast through the Midwest to New England. The Company is a... more

Public Service Enterprise Group Incorporated (PSEG) is an energy company. The wholly owned subsidiaries of the Company are PSEG Power LLC (Power), Public Service Electric and Gas Company (PSE&G), PSEG Energy Holdings L.L.C. (Energy Holdings) and PSEG Services Corporation (Services). The... more

CONSOL Energy Inc. (CONSOL Energy) is a multi-fuel energy producer and energy services provider that primarily serves the electric power generation industry in the United States. CONSOL Energy has two principal business units: Coal and Gas. The principal activities of the Coal unit are... more

DTE Energy Company is an energy company. The Company’s utility operations consist primarily of The Detroit Edison Company (Detroit Edison), which is a direct wholly owned subsidiary of DTE Energy Company and Michigan Consolidated Gas Company (MichCon), which is an indirect wholly owned... more

Washington state's oldest and largest energy utility, with a 6,000-square-mile service territory stretching across 11 counties, Puget Sound Energy (PSE) serves more than 1 million electric customers and 737,000 natural gas customers. PSE meets the energy needs of its growing customer base... more

Powergen is an anglo-american integrated energy company. In the it UK Powergen is a leading UK supplier of electricity, gas and telephone services to domestic and small business customers. With 3.2 million customer accounts it is the fastest growing of the major suppliers. In the UK,... more