Yeah sure at 1.5 million watts per acre of grow surface in LED lighting. The average American eats 2.5 acres worth of food and produce per year, which is a 3.75 million watts of lighting for 12-16 hours a day per person.

Now sure that number can be improved, but it also isn't accounting for additional HVAC costs, and you are still looking at atleast 2 million watts per person.