To be considered a green energy provider, the source of the energy must be non-polluting and environmentally friendly. Several examples of green energy are solar and wind power, hydroelectric and geothermal.

In America the United States Department of Energy, the Environmental Protection Agency and the Center of Resource Solutions acknowledges that the voluntary purchase of electricity from renewable energy sources are considered Green Energy. In 2007 six companies were singles out for the 2007 Green Power Suppliers Awards. The companies that received the awards were Constellation NewEnergy, 3Degrees, Sterling Planet, SunEdison, Pacific Power, Rocky Mountain Power and Silicon Valley Power. These 6 award winners provide over 5 billion kilowatts of electricity a year.

Constellation NewEnergy’s main headquarters is located in Baltimore Maryland. They use a combination of wind and hydropower to give their consumers a viable alternative for their energy needs. There is also the option for consumers and companies to purchase renewable energy certificates. They provide 16 different states with power along with the District of Columbia and 2 Canadian provinces.

3Degrees and Sterling Planet are providers of renewable energy certificates for any and every consumer in America.

SunEdison is North America’s leading solar energy provider. This company manages over 31 megawatts of energy. With power stations in 9 states, this is company is proving Green Energy is a viable option for the future.

Pacific Power is an energy provider for 6 western states. They have a blue-sky program that supplies consumers with energy produced by wind and solar power.

Rocky Mountain Power was a part of Pacific Power until 2006. They offer the same types of green energy as their previous parent company by utilizing wind and solar power to product electricity for its customers.

Silicon Valley Power is a non-profit municipal electric company that is owned and operated by Santa Clara, CA. With this company, the consumer can chose to have 100% of their energy to be supplied from either wind or solar power.