ever heard of grow-lights?
It only covered five acres.
Now, put all that under grow lights and pay the electric bill.
The further north you go, the longer you need to run the lights this time of year.
Where I live now, you can get nearly 16 hours of daylight in midsummer (48 degrees North), but in the depth of winter, those 16 hours are dark, and the sun never gets overhead. It is always in the South. That doesn't deal with heating the building, either.