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renewable energy

Energy resources, such as wind, solar, hydroelectric, biomass, that replenish themselves within a short period.

photovoltaic cell

a cell that converts solar energy into electrical energy

hydroelectricity

electric power created by moving water

tidal energy

A form of renewable energy that relies on the ebb and flow of the tides to generate electricity.

geothermal energy

energy generated by heat from inside the earth

biomass fuels

fuels from nature, such as wood, sugar cane, or manure

wind generator

windmill that makes electricity from winds

solar power

energy from the sun

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