<nitpick mode=on>"Renewable energy" is a pet peeve of mine, because:
1) By definition, all energy is renewable, since energy can't be destroyed or created. It can only be transformed from one form to another, e.g. electricity to heat (electric space heater) or heat to motion (steam engine).
2) The sun is a giant nuclear reactor. It's "consumes" energy (or, to be correct, converts energy from nuclear forces to various kinds of radiation) and there's no way of "renewing" or putting energy back into the sun. Once it's burned out, it's burned out!
Renewable energy is just one of those made-up politically charged words that really means nothing. "Environmentally friendly energy" would be a much better term.
My most sincere apologies for nitpicking!
</nitpick>
