"391,137 hectares (~1 million acres) of corn-for-ethanol farmland meets this criteria, which is just 3.2 percent of all the land currently devoted to corn ethanol farming. Converting just that tiny amount of land to solar could yield the same amount of energy as all corn ethanol farming does annually in the US. Wait, what? The energy from solar on about 1 million acres of farmland would equal the energy available from the ethanol derived from 30 billion acres of corn? Is this a joke?"