Green - An environmentalist community

I only know US rules, but I expect people worldwide to read this - your country will have different rules. In theory yes, but in practice no. US subsidies come in two forms: crop insurance and CRP. A long time ago there were a lot more programs in place, when people think of subsidies they are generally thinking of programs from the 1970s (which I know little about) that no longer exist.

Crop insurance in theory covers indoor farms, except the only a small number of crops apply - corn, soybeans, and a few others I forget. It doesn't make sense to farm these indoors as the value vs cost just isn't there. Crop insurance means that they guarantee you will harvest exactly your 10 year average (the bad year counts against your ten year average for the next event!) and you can sell for some minimal price. Farmers insure their crops in the worst case they still lose money, but at least they have enough savings to ride out the year.

CRP is where the government rents "bad" land from farmers so they plant it into grass. In really bad years the government will let you use that grass for hay, thus ensuring there is more food (well animal feed) in bad years. If the land is good quality crop land you are better off farming it, but if it is practically a swamp CRP ensures farmers don't try to drain it. Obviously this doesn't apply to indoor farms.