1.
Solar power
2.
Hydro electricity power (dams in river)
3.
Wind power
4.
Tidal power
5.
Ocean wave power
6.
Geothermal power (heat from deep under the
ground)
7.
Ocean thermal power (the difference in heat
between shallow and deep water)
8.
Biomass (burning of vegetation to stop it
producing methane)
9.
Bio-fuel (producing ethanol from plant)
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