The OP asked for reasonable alternatives. Using less energy, at least on a scale that actually matters, is just never going to happen. Sure, we can - and shou

The OP asked for reasonable alternatives. Using less energy, at least on a scale that actually matters, is just never going to happen. Sure, we can - and should - be striving towards energy efficiency, but without regressing a hundred years or so as a society a meaningful reduction in energy usage is impossible.