OAO Gazprom is engaged in the sale of natural gas. The Company is also involved in other types of activities, which includes the leasing of assets, organization services for gas transportation and storage, sales of gas condensate and refined products. The Company and its subsidiaries are... more

Unocal is one of the world's leading independent natural gas and crude oil exploration and production companies. With more than 6,000 employees, the company's principal oil and gas activities are in Asia and North America. Unocal has no refining or marketing operations.

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

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

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.

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

Hydrogenics Corporation (Hydrogenics) is a global developer and provider of hydrogen and fuel cell products and services, serving the industrial and clean energy markets. The Corporation has a diversified product portfolio of OnSite hydrogen generation products, fuel cell power products,... 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

Centrica is a leading provider of energy and other essential home services. In 2002, it had a turnover of £14.3 billion. In the UK, Centrica offers gas and electricity supply and related products under the British Gas brand, roadside and financial services from the AA, and telecoms... 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

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

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

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

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

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

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

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

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

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

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

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

Renewable Energy Corporation ASA (REC) was established in 1996 and has quickly become the world's leading integrated solar company. Today, REC is the world's largest producer of polysilicon and wafers for PV applications. REC is involved in all steps of the value chain, from production of... more

Constellation Energy Partners LLC is a limited liability company that was formed by Constellation Energy Group, Inc. (Constellation) to acquire oil and natural gas reserves. The Company is focused on the acquisition, development and production of oil and natural gas properties (E&P... more

TransAlta Corporation (TransAlta) is a wholesale power generator and marketer focused on the western regions of Canada and the United States. The Company owns, operates and manages a contracted and geographically diversified portfolio of assets, and has capability in generation fuels,... more

TXU Energy is the largest electric retailer based in Texas. It provides electricity and energy-related services in Texas and across the US, and is part of TXU, one of the largest energy companies in the world.

TXU Corp., a Dallas-based energy company, manages a portfolio of competitive and regulated energy businesses primarily in Texas. In the competitive TXU Energy Holdings segment (electricity generation, wholesale marketing and retailing), TXU Energy provides electricity and related services... more

Ameren Corporation (Ameren) is a holding Company. Ameren’s subsidiaries include Union Electric Company, Central Illinois Public Service Company, Ameren Energy Generating Company, CILCORP Inc. and Illinois Power Company. These subsidiaries operate rate-regulated electric generation,... more

Allegheny Energy, Inc. (Allegheny) is a diversified utility holding company that operates through its directly and indirectly owned subsidiaries. The Company is an integrated energy business that owns and operates electric generation facilities and delivers electric services to customers... more

Scottish and Southern Energy is one of the U.K.'s largest energy companies. It is involved in the generation, transmission, distribution and supply of electricity to industrial, commercial and domestic customers; the storage and supply of gas; electrical and utility contracting; domestic... more

Gaz de France is a major European natural gas company engaged in natural gas exploration, production, marketing and distribution. The Gaz de France is a leading gas distributor in Europe. Gaz de France provides services to 14 mln consumers including 11 mln in France. Since the beginning... more

Tenaska is a leader in the application of energy generation technology. The company's employees are experienced in the design, construction and operation of combined-cycle, peaking and cogeneration projects fueled by natural gas and fuel oil, coal-fueled projects, waste coal-fueled... more

Dalkia is an energy services company based in France with two shareholders: Veolia Environnement (66%) and EDF (34%).

Con Edison is a subsidiary of Consolidated Edison, Inc. [NYSE: ED], one of the nation's largest investor-owned energy companies, with approximately $12 billion in annual revenues and $25 billion in assets. The utility provides electric, gas and steam service to more than 3 million... more

Hess Corporation (Hess) is a global integrated energy company that operates in two segments: Exploration and Production (E&P) and Marketing and Refining (M&R). The E&P segment explores for, develops, produces, purchases, transports and sells crude oil and natural gas. These exploration... more

Avista Corporation (Avista Corp.) is an energy company engaged in the generation, transmission and distribution of energy as well as other energy-related businesses. The Company has three business segments: Avista Utilities, Energy Marketing and Resource Management, Advantage IQ, Inc.... more

Electrabel is a leading European energy company and number one on the Benelux market. It is part of SUEZ, an international industrial and services group, which designs sustainable and innovative solutions in the management of public utilities as a partner of public authorities, businesses... more

Allegheny Energy is an integrated energy company with a balanced portfolio of businesses, including: Allegheny Energy Supply Company, LLC, which owns and operates electric generating facilities in the Mid-Atlantic and Midwestern regions of the United States; and Allegheny Power, which... more

Florida Municipal Power Agency (FMPA) is a nonprofit, joint action agency formed by 30 municipal electric utilities. FMPA is a public agency, whose primary purpose is to develop competitive power supply and related services.

Select Energy was established in 1997 as the competitive energy marketing subsidiary of Northeast Utilities (NYSE: NU). Based in Berlin, Connecticut, the company employs over 400 people and supplies electricity, natural gas, and renewable products to businesses in 12 states from Maine to... more

TXU is a global leader in electric and natural gas services, merchant trading, energy marketing, energy delivery, telecommunications, and other energy-related services. TXU is one of the largest energy companies in the world with more than $28 billion of annual revenue and $43 billion of... more

Based in Kansas City, Missouri, UtiliCorp United is an international electric and gas company with energy customers and operations across the U.S. and in Canada, the United Kingdom, New Zealand and Australia.

Marubeni Corporation is a Japan-based trading company. It has 13 business divisions: Food, which produces and sells grains, sugar and processed food; Textile, including the planning, proposal, sale and logistics of apparel products; Material and Paper Pulp, which sells rubber products,... more

Coral Energy, an affiliate of Shell, operates as part of the global Shell Trading network in North America and provides a comprehensive portfolio of energy-related products and services associated with wholesale natural gas and power marketing and trading. Coral acts as the marketer of... more