" I've read that Norway meets it's energy needs to 90% with water power. And they have such an abundance of electricity because of that, that they can afford to have their lights runninf 24 hours a day in public buildings. Some rooms don't even have light switches. The light there are permanently on. "
99% of the produced electricity is based on hydropower :) A lot is being exported, but the energy needs are covered by 98% renewable sources.