Renewable energy lowers reliance on foreign energy sources.
Advantage
Water power provides energy without pollution.
Advantage
A nuclear reactor releases radiation which is dangerous to the environment.
Disadvantage
Solar energy is not only plentiful and unlimited but also clean and safe.
Advantage
If the wind does not blow, there is no wind energy.
Disadvantage
Tidal energy is intermittent because the tidal flow is not constant.
Disadvantage
Fossil fuels will be exhausted within a relatively short time.
Disadvantage
It is expensive to build a dam for hydroelectricity
Disadvantage
Geothermal heat is available only in a few places in the world.
Disadvantage