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

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

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

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

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 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

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

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

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

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

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

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

Ecotricity is an electricity company with a difference - we're dedicated to changing the way electricity is made. We take the money our customers spend on electricity and invest it in clean forms of power like wind energy. What's more, we're the only green electricity company actually... 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

Airtricity is a world leading renewable energy company. As an integrated utility, the company is both a generator and supplier of green electricity. The company currently supplies renewable electricity to approximately 45,000 commercial customers in both the Republic of Ireland Wales and... 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

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

FPL Energy is a leading clean energy provider with natural gas, wind, solar, hydroelectric and nuclear power plants in operation across the nation. FPL Energy is a subsidiary of FPL Group, Inc., one of the nation's largest providers of electricity-related services. Our portfolio of... more

Iberdrola SA is a Spain-based holding company primarily engaged in the energy sector. Together with its subsidiaries the Company forms Grupo Iberdrola, which operates in approximately 40 countries. In Spain, it is mainly engaged in the generation and supply of electricity and gas. It... 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

Gamesa is an international corporation, focused mainly on the renewable energy sector. In this field, its activity spans from the promotion, procurement and sale of solar and wind farms to the design, manufacturing and sale of wind turbines. Gamesa reached in 2005 a turn over 1.745... more

Questar Corporation (Questar) is a natural gas-focused energy company with four major lines of business: gas and oil exploration and production, midstream field services, energy marketing, interstate gas transportation, and retail gas distribution. The Company's operations are conducted... 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

InterGen is an international power generation firm. The company is operating or building a total of eleven power stations representing 7,985 MW. It also has an additional 7,040 MW in advanced development. InterGen has projects operating, under construction and/or in advanced development... more

enXco develops, constructs, operates and manages wind energy projects throughout the United States. The strength of enXco is found in the Company's extensive experience and in the quality of its people. Since 1987, enXco has grown to become a leading provider of operation and... more

The ScottishPower group supplies energy to millions of business and domestic customers across the UK and the Western United States. Its combined sales total nearly £6.5 billion ($11 billion). The group employs 24,000 people. ScottishPower's ten-year record since privatisation has... more

U.S. Geothermal Inc. (GTH) is engaged in the acquisition, development and utilization of geothermal resources in the Western Region of the United States of America. As of March 31, 2008, the Company operated two power plants, Raft River Unit I in Idaho, through its joint venture with Raft... more

The RES group of companies is established as one of the foremost wind energy developers in the world. Our flexible, professional and exacting approach helps us play a major role in furthering the development of this rapidly growing technology. The company is now operating in a number of... more

Energen Corporation is a diversified energy holding company with headquarters in Birmingham, Alabama. Through its Energen Resources unit, Energen is engaged in the acquisition and development of onshore North American oil and gas properties. Energen also sells and distributes natural gas... more

Sterling Planet offers comprehensive carbon neutral solutions for businesses, universities and organizations of all types, bringing together supply and demand side solutions in a rapidly emerging environmental market. The company currently is developing next-generation solar and bioenergy... more

United Utilities, an operator of electricity distribution, water and wastewater networks in Northern England and a UK leader in environmental sustainability are providing some of the materials for the construction of the Boreal Forest Garden at the Chelsea Flower Show.

PPM Energy (www.ppmenergy.com), part of the IBERDROLA group of companies, has more than 2,000 megawatts (MW) of wind energy in operation or under construction. The strength of its renewable project pipeline has allowed the company to increase its 2010 target by more than 50 percent to at... more

Origin Energy Limited (Origin) is engaged in exploration and production of oil and gas, electricity generation, and wholesale and retail sale of electricity and gas. The Company’s producing assets include Coal Seam Gas and Cooper/Eromanga Basin in Queensland, Otway Gas Project and Bass... 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

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

Konarka is developing and advancing nano-enabled polymer photovoltaic materials that are lightweight, flexible and more versatile than traditional solar materials. Using proprietary materials developed by our world-class technical team and low cost manufacturing processes, Konarka... 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

3 Phases Energy Services offers green pricing program design and implementation services, retail and wholesale marketing of tradable renewable certificates (Green Certificates), 100 percent renewable electricity direct access services in California, and solar photovoltaic efficiency... more

Ormat Technologies, Inc. (Ormat) is engaged in the geothermal and recovered energy power business. The Company designs, develops, builds, owns and operates geothermal recovered energy-based power plants, usually using equipment that it designs and manufactures. Ormat conducts its business... more

Energy Trust of Oregon, Inc., is a nonprofit organization dedicated to changing how Oregonians use energy by promoting energy efficiency and clean, renewable energy for Oregon customers of Portland General Electric, Pacific Power, NW Natural and Cascade Natural Gas.

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

The Massachusetts Technology Collaborative is the state's quasi-public economic development agency focused on growing the renewable energy sector and the state's knowledge-based economy. MTC administers the Renewable Energy Trust, which was established to generate the maximum economic and... more

For almost two decades, NORESCO has provided its clients with fully outsourced integrated energy solutions valued at over $1.4 billion. These projects vary in size from hundreds of thousands to tens of millions of dollars, and range from lighting-only applications to comprehensive... more

Ameresco provides a wide range of energy plant development, design, construction and management services for energy conversion equipment (e.g., boilers, chillers, air compressors) and for onsite generation and power plant operation. We can also develop, finance, own and operate these... more