• The amount of solar energy intercepted by the Earth every minute is greater than the amount of energy the world uses in fossil fuels each year.
• Tropical oceans absorb 560 trillion gigajoules of solar energy each year, equivalent to 1,600 times the world’s annual energy use.

That is just how much solar energy is available to the entire earth. Just think... if we could harness that energy to its full potential, we could give developing countries the power they need to run pumps from underground for water and to help them power cities and water purification plants. That is just how powerful solar energy has a potential of being

photovaltaic cells use the energy from sunlight to produce electricity–the fuel is free. With no moving parts, the cells require little upkeep. These low-maintenance, cost-effective photovaltaic systems are ideal for supplying power to communications stations on mountain tops, navigational buoys at sea, or homes far from utility power lines. This means its pretty inexpensive.