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

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

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

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

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

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

AGL Energy Limited is an integrated energy company. It is engaged in buying and selling of gas and electricity; construction and/or operation of power generation and energy processing infrastructure; development of natural gas production facilities; exploration, extraction, production and... more

Direct Energy is part of the Centrica group of companies, one of the largest multi-state providers of retail energy services in North America.

Native American majority-owned, NativeEnergy is a national marketer of carbon offsets and renewable energy credits (RECs), offering individuals and organizations a means to compensate for their global warming pollution, or to effectively power their homes and businesses with renewable... 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

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

Founded in 2005, Bullfrog Power is a leading provider of 100% green electricity, with service available to Ontario and Alberta residents and businesses. Bullfrog Power provides Canadians with a convenient way to support locally generated renewable power. All of Bullfrog's power comes from... 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

The Sacramento Municipal Utility District (SMUD) began providing electricity to customers on December 31, 1946. SMUD generates, transmits and distributes electric power to over 500,000 residential and commercial customers within a 900-square-mile service area that includes Sacramento... more

Power Efficiency Corporation designs, develops and markets energy efficiency technologies and products for electric motors. The Company re-branded the product as the motor efficiency controllers (MEC). Its digital technology is called E-SAVE Technology. The Company’s products reduce the... more

Renewable Choice is a national leader in providing renewable energy and carbon offsets to organizations and individuals across the country. The company's sole mission is to provide opportunities to help move our society toward a more sustainable future. Renewable Choice is an... more

Clipper Windpower PLC (Clipper) is a wind energy technology, turbine manufacturing and wind project development company in the United Kingdom. Clipper designs advanced wind turbines, manufactures the 2.5 megawatt Liberty wind turbine and actively develops wind power generating projects in... more

Green Mountain Power transmits, distributes and sells electricity and utility construction services in the State of Vermont in a service territory with approximately one quarter of Vermont's population. It serves approximately 94,000 customers.

U.S. Energy Systems, Inc. (USEY) develops clean, efficient energy sources, produces power, and provides energy services, all in concert with the needs of the customer. USEY distinguishes itself by the quality and customization of the products and services that it delivers and its... more

About E.ON UK E.ON UK, the company that runs Powergen, is a leading energy company in the UK. Owned by E.ON AG, the world's largest investor-owned utility, E.ON UK is a leading energy supplier in the UK, and produces electricity from a portfolio of world-class power stations and a leading... more

Innogy plc, headquartered in Swindon, UK, is the principal business holding company of the Innogy Group, which is the UK part of the de-merged former National Power plc. Innogy plc is 100% owned by Innogy Holdings plc, which is the new overall Group holding company created at the time of... more

Boralex Power Income Fund (the Fund) is an open-ended trust that indirectly owns 10 power stations with a total installed capacity of 190 megawatts. The Fund’s power stations are managed by Boralex Inc. The Fund owns 100% of Boralex Power Trust (BPT). The Fund’s power stations are grouped... more

Ceramic Fuel Cells Limited (CFCL) is engaged in developing solid oxide fuel cell (SOFC) technology, which provides electricity from available natural gas and renewable fuels. The Company’s SOFC technology converts gas into electricity and heat, without combustion or noise. The Company’s... more

Austin Energy is the 10th largest public power utility in the nation providing low cost reliable power to the capitol city of Texas, home to the country's third largest concentration of high tech industries and the nation's largest university. Austin Energy is a recognized industry leader... more

Clean Edge, Inc., based in the San Francisco Bay Area, is a research and consulting firm that helps companies and investors understand and profit from the clean-tech marketplace. Through its business consulting services, research reports, and industry events, Clean Edge works to build... more

Nexant is a major independent global business consulting firm focusing in the energy sector. It includes the largest specialized global petroleum and chemical industry-based consulting practice in the world, with key offices in London, New York, Houston, and Bangkok. We provide expert... more

groSolar was founded in 1998 as Global Resource Options. My wife Dori Wolfe and I, both degreed engineers with a history in large building design, founded the company to bring sustainability to design, and renewable energy to more people. Starting with small off-grid solar projects and... more

Finavera Renewables Inc. is a Canada-based company that is in the business of developing projects and technology in the clean renewable energy sector. The Company’s focus is to develop its wind and wave energy assets with a view to becoming an alternative energy producer. The Company... more

3. npower is one of the UK's largest energy providers supplying gas, electricity, home maintenance, warranty and conveyancing services to over 6 million customers anywhere in the UK mainland.

CESA is managed by Clean Energy Group, Inc. (CEG), a nonprofit 501(c)(3), publicly supported charitable organization. CEG (www.cleanegroup.org) was established in January 1998 to promote market-based actions to replace the existing electricity generation system with new, less polluting... more

Georgia Power Company (Georgia Power) is engaged in the generation and purchase of electricity and the transmission, distribution, and sale of such electricity within the State of Georgia at retail in over 600 communities (including Athens, Atlanta, Augusta, Columbus, Macon, Rome, and... more

EHN, the world's largest owner and operator of wind energy projects, a wholly-owned subsidiary of the Spanish conglomerate Acciona. EHN is growing rapidly in the Americas and worldwide in renewable energy development, including the areas of wind, small hydro electric, solar and biomass... more

Ergon Energy owns and manages the electricity distribution network in Queensland's regional areas. We service an area over 1 million square kilometres, with over 3,000 employees, assets worth over $3.4 billion, and powerlines stretching 140,000km. Within regional Queensland, we supply... more

Plutonic Power Corporation is a Canada-based company that is principally engaged in the identification, development, construction and ultimately, the operation of economically viable clean power projects. The Company has a portfolio of 29 run-of-river hydroelectric sites (Power Sites) in... more

Renegy Holdings, Inc. (Renegy) is a renewable energy company focused on acquiring, developing and operating a portfolio of biomass to electricity power generation facilities, in addition to the development, construction and operation of biomass facilities. Other business activities... more

Energy Developments Limited is an independent electricity producer, owning 74 power generation facilities across Australia, the United Kingdom, Europe and the United States. The Company provides its services in four areas of business, including landfill gas (LFG) power generation, coal... more

NC GreenPower is an independent, nonprofit organization established to improve North Carolina's environment through voluntary contributions toward renewable energy. A landmark initiative approved by the N.C. Utilities Commission, NC GreenPower is the first statewide green energy program... more

Alkane builds and operates decentralised methane extraction and electricity generation plants which reduce greenhouse gas emissions. Alkane sells electricity and gas to local customers from its containerised energy plants Alkane is the leading UK producer of Climate Change Levy exempt... more

Western Power is Western Australia's leading energy corporation with more than 800,000 industrial, commercial and residential customers in its home State. To meet the needs of a 2,525,000 square kilometre land mass, which represents more than a third of the Australian continent and is... more

Southern Energy Management provides high performance energy efficiency and renewable energy solutions to a wide variety of residential, commercial and industrial clients. We work with everyone from homeowners and niche green builders to production builders and large multi-national... more

UES provides electric service in Mohave and Santa Cruz Counties. Our service territory in Mohave County is located in the extreme northwest corner of the state. It includes both Kingman, located in the high desert central portion of the county, and Lake Havasu City, situated in the low... more

EnviroMission Limited is an Australia-based company. The Company is principally engaged in the development of the Solar Tower project for the Australian market. Its wholly owned subsidiaries include SolarMission Limited and Pure Solar Power (IP) Pty Ltd. In August 2008, the Company... more

Green Energy Resources (formally New York International Log & Lumber Co.) is a green bio-energy supply company, dedicated to preserving world forests, not cutting them. Green Energy Resources is a publicly traded, environmentally friendly "GREEN STOCK", (symbol GRGR) working with... more

Geodynamics Limited is an Australia-based company with a focus on hot fractured rocks (HFR) energy. The Company has HFR geothermal tenements in New South Wales, Queensland and in the north-eastern part of South Australia. HFR geothermal energy development is the Company’s primary focus... more