Yeah it's about $50 month per 1000 watt light INCLUDING AC. I run 8-12 kW in basement at 10¢ per kwh, that's including delivery... I run 11/13. Only go off when I trim.
Now let's stop this nonsense. I don't see any need to do any of the above. No stories or gens or panels. The avg house in us uses 1500 kwh month easily. If your all electric it's way more. And it sounds like your location is discreet and that maybe your best option. A electric dryer, stove, water heater and furnace will generate a bill that's thousands of kwh for someone who doesn't grow. Let alone someone who likes a jacuzzi or does pottery. Haha
WORRY ABOUT MANAGING THE SMELL IN FULL FLOWER. THATS THE ONLY REAL ISSUE.
get an AC, mini split or window and seal room very tight. That's all, you can run 4-6 kW with absolutely no issues ever! That's like having an electric hot water heater.
Just pay your bill on time, your there best customer! N tip your mailman! Better yet, put mailbox at end of driveway. Don't worry. I use 4000-5000 kwh month no issues.
What's your rate? (With delivery)
Do you have access to natural gas?