Cost of 600w HPS in AZ??

i think you should make three more new posts asking the same question. i dont think the first three were enough.

Originally Posted by arizonarookie

Was curious about the cost to run 18/6 600 w hps light in arizona havent got 1stt bill yet but afraid wifes gonna shut down shop when she sees it...., could u please give me an estimate, runing 2 fans and 1 exhaust fan with it???

The electric cost of the lighting are pretty marginal. What really increases the cost of your electric bill is the fact that you are pumping the air conditioned air out of your house at 450 CFM. Even without the huge amount of exhaust, your air conditioner undoubtedly dominates your electric bill. My setup adds about $60-70 to my electric bill. Helps a lot that my 12/12 is 7:PM to 7:AM.