S. Karekezi has written:

'Renewable energy technologies in Africa'

Renewable energy can't run out. Non-renewable energy WILL run out.

Renewable energy is produced at a constant rate, non-renewable is not.

Renewable energy is free when the generator is built, non-renewable is not.

Renewable energy does not cause pollution (with the exception of biofuels), non-renewable energy does.

The most popular renewable energy sources currently are:

Solar energy.

Wind energy.

Hydro energy.

Tidal energy.

Geothermal energy.

Biomass energy.

If you mean solar energy then it is renewable

renewable source of energy can be regenerated but non-renewable source of energy can not be regenerated.