Potential of Renewable Energy

Given the increasing population of the human race, the importance of renewable energy is likely to continue to increase in the future, as well as a shift toward more cost efficient energy sources.

Currently most of the world's vehicles operate on gasoline or diesel fuel derived from crude oil, and renewable substitutes to these fuels, such as ethanol, are not terribly energy efficient.

Other clean technologies, such as electric power, hydrogen power cells, compressed air, or new biofuels present possible sources of renewable and efficient fuels for vehicles.

From the standpoint of electrical power, solar energy has a huge potential, considering the amount of energy the sun produces is thousands of times greater than the needs of earth.