Renewable energy sources

Click here to see our selection of Renewable energy sources.

Renewable energy sources include solar, wind, biomass, geothermal and hydropower (water). Any energy source that originates in nature is deemed to be renewable. The hitch with renewable sources of energy found in nature is not duration but is the amount of energy that can be generated per unit of time.

Biomass is one of the renewable energy sources produced from plants and non-fossilized materials derivative of plants. Wood, biofuels such as ethanol and biodiesel, and municipal solid waste and biogas are some other examples of biomass. According to the Energy Information Administration, in 2004 in the U.S., biomass accounted for “47% of renewable energy consumption, with about 50% of that used for heating, 40% for electrical power production, and the rest as transportation fuel.”

Hydropower is electricity generated from flowing water. Rainfall amounts directly impact the amount of hydropower available. In the U.S., the federal government remains the largest producer of hydropower, mainly because it has the money and wherewithal to build the large facilities needed to capture and generate energy from water. Tides and currents are the latest advancements being harnessed as renewable energy sources in the hydropower category.

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