I've been told that I have a lot of energy. The secret is that I use renewable resources. Some days I'm solar powered. Some days I'm wind powered. And some people in this room might think I'm hybrid gas-powered. You'll just have to guess which it is today.

Bill Richardson

Green Energy

Green energy is a term used by some environmentalists to describe what they deem to be environmentally friendly sources of power and energy. In particular green energy must be renewable and non-polluting.

Green energy includes natural enegetic processes which can be harnessed with little pollution. Geothermal power, wind power, small-scale hydropower, solar power, biomass power, tidal power and wave power fall under such a category. Some versions may also include power derived from the incineration of waste.

Read more.. Is nuclear energy green?, Can consumers buy green energy?