In my original comment I linked the nature study that looked at farmers doing both. The "but if we don't plant crops we'll starve!" argument is just silly for a number of reasons, one I pointed out which is if we used all land arable land just in California for solar panels + batteries we'd have 1,000 times as much power available as the entire world demand today. Who would even buy that power? Nobody. The thing that keeps this from happening is that as more solar power comes online its cost goes down and it becomes uneconomical to add more (farmer's won't put it in because they can make more money growing beans or something). So no, allowing farmers to put in solar instead of crops will never lead to a famine due to nobody growing food. People are too greedy :-). There is a large ConAgra farm in the central valley that lobbies a lot (they want more water for Almonds because $$) and a back of the envelope calculation shows they could convert half their acreage to solar, use that to desalinate water off the coast of Point Magu, and pump it to the other half of their acreage and not need any water delivered from the California watershed. It sounds crazy but its the new reality of what you can do with solar and batteries. China (as a government policy directive) has figured this out before anyone else btw.