hydro power - solar power - wind energy - bioenergy
Solar power is the energy generated by the sun through thermonuclear fusion. Some of this energy reaches the earth’s surface in the form of electromagnetic radiation.
The sun is our largest source of energy, supplying about 3.9 × 1024 J to the earth’s surface. This corresponds to 1.08 ×1018 kWh or about 10,000 times the world’s primary energy demand. ... more about solar power