In the 21st century, has already become a small part of daily life. From solar heated swimming pools to solar powered homes, some examples already exist to show the useful application of the clean, safe, of the sun. Yet many wonder if small applications will be all solar power is capable of handling. Certainly, the difficulties of large solar plants are many, although many experts continue to insist that the future of is quite sunny.

According to some experts, the sun is our best source of renewable, . Some estimate that the sun can produce 10,000 times as much energy as the Earth uses at the turn of the 21st century. The future of solar energy depends mostly on how it is applied, rather than whether it would be enough energy to be a viable world power source.