Elpsoccer..If you are worried about a High Light Bill, Keep that HPS in the Box. A coupel of things first...Are you growing for yourself/to share with frends? Or for $$$$? If its for yourself/your first grow, I'd recomend CFL's.The're cheep,you can use standard fixture's/lamps and plugs, we use 2 CFL's at nignt and naturel sunlight w/ the 2 CFL's for our Veg. And 6 CFL's in a closet w/ one moving fan in a 3'x4 1/2'x5 1/2' closet.Our Elec. bill per mounth is around $75.00 a mounth. A good frend of mine started growing w/ 2 1000 HPS's in a walk-in closet and his bill jumped from around $150.00 a mounth to $750.00 a mounth!! This also alerted his landlord,the power co.,and of course, his local police dep. Sure he got Coffie-can size buds, but he never got the chance to smoke any of them. Now if you own your own home or are VERY close to your landlord{ or ARE the landlord!},you can try going off-grid w/ solar panals or wind-mills or whatever. If your going to grow for $$$$, Frend, you gots to spend the Money to makes The Money.Maybe Growing outside might work better for you until things are better finacialy? The last issue of Cannabis Culture had articals on outdoor growing ,in forrest,in swamps, maybe something in there could give you new ideas. Keep us posted, and GOOD-LUCK.