Solar panels are 20x more efficient than growing corn for ethanol. Swap out some of those 30 million acres of ethanol corn fields (in the US) and you'll have more energy than you need.
More details here: https://www.youtube.com/watch?v=KtQ9nt2ZeGM
You plant a PV panel and add its irrigation (power interconnect) and remote monitoring, then you harvest power for the next 25+ years.
Ethanol production excess is a specific US problem because of the misalignment of incentives and lobbying.