Using about 2000 watts.

I have alternating sets of lights. I have 9x 20 watt CFL w/aluminum cone fixtures in 6500k, 2x 1000 hps watt fixtures, 1x 200 watt FLOURESCENT grow light in 6500k, 1x 70 watt security light modified w/remote ballast and aluminum reflector, 1x UV-A 18" flourescent blacklight 12000k.

They all come on at different times with 3 timers; this has many benefits from night and day simulation to cooling.