for one and a half years!
where does all this energy go? about 15 percent of the sun's energy that hits the earth is reflected back into space. another 30 percent is used to evaporate water, which, lifted into the atmosphere, produce's rain-fall. solar energy also is absorbed by plants, the land, and the oceans. the rest could be used to supply our energy needs.
heating with solar energy is not as easy as you might think. capturing sunlight and putting it to work is difficult because the solar energy that reaches the earth is spread out over a large area. the sun does not deliver that much energy to any one 