12 lights 5 ton ac 170 pint dehu, fans exhaust and co2 plus veg space gonna be a pretty hefty bill monthly especially during summer. Runing double that on the west cost and bill for our one month of running only 12 1000w was 3200.00....also w the tier system out here the rapage is real after X amount of Kwatts and we are well over that mark every month! Id say your at least looking at 2500. Icame into the thread late but I hope this will help give someone a decent estimate at what you can expect your bill to be around