Buck, what are you looking to get into?

Energy management just doesn't deal with lighting, and have you seen the new t-5 fixtures? Them are the bomb....

There are hosts of "hybrid" fluro combinations of lighting for low and high bay fixtures out there. I don't know how well they work though.

I have also seen replacement compact fluro bulbs made for 400w parking lot lights, but once again, I haven't tried them out yet.