oh, and I was off on the final numbers.

aye aye aye.

You'd save $7.92, or $95.04 per year
graph Reviewed by graph on . kwH? Well, I took a look at our bill yesterday and the KWH is about 406 or somethin..how much do you guys think it would be if I added a 400w HID light, also with that the bill costs like $100 some where in that range..how much would it be if I added a 400w light with that? I know you guys are better than me with math and watts so help me out :D. Rating: 5