alternative energy

Definitions of alternative energy
  1. noun
    energy derived from sources that do not use up natural resources or harm the environment
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    types:
    solar energy, solar power
    energy from the sun that is converted into thermal or electrical energy
    wind generation, wind power
    power derived from the wind (as by windmills)
    type of:
    energy, free energy
    (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
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