Hydroelectric power is the most accepted form of clean energy production in America and across the world.
This technology dates all the way back to early flour-mills, where millers used the mechanical energy from adjacent streams to turn their millstones.
Although hydroelectric power is cheap, easy and effective, the industry is not growing much in the U.S.; this is mostly because of the environmental impacts of damming which can flood towns and eliminate precious land resources.
On a smaller scale, individual homeowners or business owners can buy or build a hydroelectric generator. This technology is best suited for fast flowing streams and usually doesn't require damming.