Most energy systems seem to work by moving a turbine that generates energy. So why can't we just mass employ people to turn large generators on a much bigger scale. It's not as if there's a lack of manpower to do it. The underskilled and lower IQ portion of society has been underemployed for decades and could be put to work in jobs like this. In addition you could make use of levers/leverage to maximize the energy people use to turn the generators that will make it very efficient.