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

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

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

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

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

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

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

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

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

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

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

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

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

WorldWater & Solar Technologies Corp., formerly WorldWater & Power Corp. is an international solar engineering and project management company with high-powered solar electric technology and expertise, providing alternative energy solutions to a variety of customers in both domestic and... more

Based in Philadelphia, PECO is an electric and natural gas utility subsidiary of Exelon Corporation (NYSE: EXC). PECO serves 1.6 million electric and 480,000 natural gas customers in southeastern Pennsylvania. In 2006, the company delivered 38.2 million megawatt-hours (Mwh) of electricity... more

TransCanada Corporation (TransCanada) is a North American energy infrastructure company focused on pipelines and energy. At December 31, 2007, Pipelines accounted for approximately 53% of revenues and 73% of TransCanada’s total assets and the Energy business accounted for approximately... 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

Pepco Holdings, Inc. (PHI) is a diversified energy company, which, through its operating subsidiaries, is engaged primarily in two businesses: electricity and natural gas delivery (Power Delivery), conducted through the regulated public utility companies, including Potomac Electric Power... 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.

Enogex is actively involved in natural gas processing, pursuing opportunities both on and off our pipeline system. By consolidating small, less-efficient facilities and relocating and constructing new processing plants, Enogex has demonstrated its commitment to excellence in gas... more

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

FirstEnergy Corp. (FirstEnergy) is principally a holding company that holds, directly or indirectly, eight principal electric utility operating subsidiaries: Ohio Edison Company (OE), The Cleveland Electric Illuminating Company (CEI), The Toledo Edison Company (TE), Pennsylvania Power... 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

BGE, www.bge.com, headquartered in Baltimore, is Maryland's largest gas and electric utility, delivering power to more than 1.2 million electric customers and more than 640,000 natural gas customers in Central Maryland. The company's approximately 3,000 employees are committed to the safe... more

PPL Corporation (PPL) is an energy and utility holding company, which through its subsidiaries, generates electricity from power plants in the northeastern and western United States; markets wholesale or retail energy primarily in the northeastern and western portions of the United... more

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

Vectren Corporation (Vectren) is an energy holding company. The Company’s wholly owned subsidiary, Vectren Utility Holdings, Inc. (Utility Holdings), serves as the intermediate holding company for three operating public utilities: Indiana Gas Company, Inc. (Indiana Gas or Vectren North),... more

SRP Telecom is a carrier-neutral provider of telecommunications infrastructure products and services to Wireline and Wireless carriers alike, as well as to enterprise customers. Our fiber optic and cell site assets are concentrated in the Phoenix metropolitan area, providing ready... more

MidAmerican Energy Holdings Company is a global leader in the production of energy from diversified fuel sources including geothermal, natural gas, hydroelectric, nuclear, coal and wind. MidAmerican also leads in the supply and distribution of energy in the U.S. and U.K. consumer markets,... more

Aggreko plc is the global leader in the rental of power, temperature control and oil-free compressed air systems.

PG&E Corporation is an energy-based holding company that conducts its business through Pacific Gas and Electric Company (Utility), a public utility operating in northern and central California. The Utility engages primarily in the businesses of electricity and natural gas distribution,... more

NSTAR is a holding company engaged in the energy delivery business. The Company through its subsidiaries is involved in serving approximately 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and approximately... more

Energy East will continue to maintain low rates while providing excellent customer service and reliability. In addition, we will make needed infrastructure investments in an environmentally responsive manner. This strategy will benefit both customers and shareholders, showing that we can... more

Invenergy LLC is a leading energy company focused on the development, acquisition and management of large-scale power generation assets. Chicago based Invenergy LLC is a leading clean energy company focused on the development, ownership, operation and management of large-scale... more

ATC operates the electric transmission system from two system operations centers. From these centers, we monitor and operate the flow of electricity over 9,081 miles of transmission lines and through 480 electric substations in our service area. The control centers are staffed 24 hours a... more

WPPI is a regional power company serving 50 customer-owned electric utilities. Through WPPI, these public power utilities share resources and own generation facilities to provide reliable, affordable electricity to more than 190,000 homes and businesses in Wisconsin, Upper Michigan and... 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

MidAmerican Energy Company is a public utility company principally engaged in the business of generating, transmitting, distributing and selling electricity and in distributing, selling and transporting natural gas. The Company distributes electricity at retail in Council Bluffs, Des... more

Niagara Mohawk Power Corporation is engaged principally in the regulated energy delivery business. The Company provides electric service to approximately 1,500,000 electric customers in the areas of eastern, central, northern and western New York and sells, distributes, and transports... more

Western GeoPower Corp. is a renewable energy company engaged in the acquisition and development of geothermal properties for the commercial production of electricity in Canada and the United States. The Company is in the process of developing its Geothermal Projects held for the potential... more

Allegheny Power has been providing low-cost, reliable energy for more than 100 years. With about 1.5 million customers in four states, we are committed to you, the community, and the environment.

NorthWestern Corporation d/b/a NorthWestern Energy is an investor-owned utility and one of the largest providers of electricity and natural gas in the northwest quadrant of the United States. We serve approximately 650,000 customers - 388,000 electric and 262,000 natural gas - in... more

National Grid Transco is dedicated to being the world's premier network utility, primarily focused on delivering energy safely, reliably and efficiently. We own and operate the high-voltage electricity system in England and Wales and the high pressure gas transmission system in... more

ATCO Frontec provides project management and technical services; systems installation and integration; operation and maintenance; technology transfer and training services to the defence, transportation and industrial sectors throughout North America. It is part of the ATCO Group, one of... more