Coincidentally, I read about a company in Germany yesterday that bases its energy needs largely on solar and wood. The solar panels are expensive, but the sunl

Coincidentally, I read about a company in Germany yesterday that bases its energy needs largely on solar and wood. The solar panels are expensive, but the sunlight is free. The furnace to burn wood is cheap and can be turned up/down as needed, but of course the wood is expensive, A fine backup.