by Robert Rapier
Several years ago, when I was working on my book Power Plays, I spent a lot of time thinking about the future of energy. One thing I concluded was that solar power would become one of the world’s most important sources of energy – if not eventually the most important source of energy. I also discussed this in the 2007 column “The Future Is Solar.”
There are a couple of reasons I still believe this. But first, I should make it clear that it will be a long time before solar power rivals the consumption of oil in the global energy market.
While solar power is growing rapidly, we still use about 100 times as much energy in the form of oil (and about 90 times as much in the form of coal).