1. Industry

Power Sources

From , former About.com Guide

Electric power can be generated from a wide range of natural resources, including fossil fuels (coal, oil, and gas), renewable energy (solar, wind, wave, geothermal, and biomass), and nuclear energy.
  1. Fossil Fuels
  2. Renewable Energy
  3. Nuclear Power

Fossil Fuels

Piles of coal

Fossil fuels are finite energy supplies formed underground, including coal, oil, and gas.

Renewable Energy

Solar photovoltaic panel.

Some renewable power sources, like wind, solar, and ocean energy, have no fuel cost and provide an ongoing source of clean energy. Other renewable sources come from biomass and microbe-produced gases.

Nuclear Power

Nuclear power plant

About 14% of the world's energy and 20% of U.S. energy is supplied by nuclear power.

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