Sources of Energy

The main


1) Fossil fuels: By far the most exploited energy resource but not for much longer. Oil, coal, gas.

2) Nuclear energy: Highly productive but has hazardous issues.

3) Hydroelectric energy: Harnesses the kinetic energy of flowing water.

4) Solar energy: Renewable because the sun will be around for a few billion years more. Very expensive.

Others

Wind

Geothermal

Tidal

Hydrogen fuel cells

Biofuels

Biomass