Big toy.

For one, maintenance will _not_ be low. Wind turbines (and nothing else is used here) do have quite some maintenance costs, and additionally, you need to keep the greenhouse clean.

The main problem I see is the capacity. 200 MW peak capacity at 60% efficiency translates to 120 MW peak electric energy. If we assume 50% capacity factor (which I suspect is _very_ generous), we arrive at 60 MWe average output. You would need 15 of these to substitute for a single 1 GW nuclear plant.

Big toy.