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

EnCana Corporation (EnCana) is a natural gas producer. The Company is one of the holders of natural gas and oil resource lands onshore North America. EnCana's other operations include the transportation and marketing of crude oil, natural gas and natural gas liquids, as well as the... 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

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

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

PDVSA is the national oil company of the Republic of Venezuela, entrusted with the development of the petroleum, petrochemical and coal industry. It is responsible for planning, coordination, supervision and control of the activities of its business units and companies, both in Venezuela... more

Vestas Americas is the North American sales business unit of Vestas, the global leader in high-tech wind power systems and a driving force behind the development of the wind power industry. Vestas has sold 32 percent of the accumulated global megawatts of installed wind capacity, and has... more

Chesapeake Energy Corporation is a producer of natural gas in the United States (first among independents). It owns interests in approximately 38,500 producing oil and natural gas wells that are producing approximately 2.2 billion cubic feet equivalent (bcfe), per day, 92% of which is... 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

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

Repsol YPF, S.A. is an integrated oil and gas company engaged in all aspects of the petroleum business, including exploration, development and production of crude oil and natural gas, transportation of petroleum products, liquefied petroleum gas (LPG) and natural gas, petroleum refining,... more

Eni S.p.A. (Eni) is an integrated energy company. The Company’s activities include finding, producing, transporting, transforming and marketing oil and gas. During the year ended December 31, 2007, the Company’s oil and natural gas production averaged 1.736 million barrels of equivalent... 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

AGL Resources Inc. is an energy services holding Company whose principal business is the distribution of natural gas in six states: Florida, Georgia, Maryland, New Jersey, Tennessee and Virginia. It is involved in various related businesses, including retail natural gas marketing to... 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

Suncor Energy Inc. (Suncor) is an integrated energy company. The Company focuses on developing Canada’s Athabasca oil sands. In addition, the Company explores for, acquires, develops, produces and markets crude oil and natural gas, transports and refines crude oil and market petroleum and... 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

Piedmont Natural Gas Company, Inc. (Piedmont) is an energy services company primarily engaged in the distribution of natural gas to over one million residential, commercial and industrial customers in portions of North Carolina, South Carolina and Tennessee, including 62,000 customers... 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