running a 1000W is nothing crazy. it's no different that if you plugged in a gaming pc or what not. it's one kilowatt an hour x how many hours light is on x days in the month = total cost to run your light.

so if you pay $0.10 per KW/hour your bill would go up $39.60 (assuming your flowrering in a 30 day month).

keep in mind though that you will also need an exhaust fan as well.



-shake