The future of electricity: five lesser known alternative energy sources

Ocean power

The rhythmic and powerful movements of the ocean current and waves can drive electric generators to produce a steady stream and vast amount of power, which would then be transported to land via cables. They present a tantalizing promise for clean energy.

Fuel cells

Fuel cells produce energy through chemical reactions that combine hydrogen with oxygen.

Hydropower

Hydro power is one of the oldest sources of electricity in human history and is used by every state in the country. The world’s first commercial hydropower plant came online on the Fox River of Appleton, Wisconsin, in 1882.

source:

https://www.theguardian.com/nrg-the-energy-of-choice/2015/aug/19/alternative-energy-sources-ocean-biomass-geothermal