Thanks for the info gfretwell. The lighting project is someone elses gig, but as I see it, it is correction of power factor on motor loads where the biggest savings can be achieved. As for how much lighting consumes in power, I think I read it is about 20 percent of all power consumed, which is still quite a large percentage. I will look furthur into measuring the phase shift on the motor loads, and how much can be saved by correcting this. This is actually an interesting subject, and will be interesting to find out how much can be saved in monetary terms.