Interestingly, everything organic is already powered by solar energy so by far, solar is probably the greatest energy source on the planet. The Photosynthesis

Interestingly, everything organic is already powered by solar energy so by far, solar is probably the greatest energy source on the planet. The Photosynthesis enzyme in plant leaves captures photons that are converted to electrons with energy stored chemically in carbohydrates. Animals eat the chemical energy created by plants as well as other animals. Animals use oxygen to oxidize the carbohydrates to create energy.