Yeah they could. Wind is proving viable. Solar not yet.Hell, plants are 20% efficient and they've been here 7-800 million years. ROI of residential systems is far underperforming market claims (SE MN) At least in our area energy cooperatives are funding wind farms, sold on the premise that reducing fossil fuel consumption will save the planet. All this funding grab for alternate energy will make people laugh in 50 years when we will probably have cold fusion.