Cough, choke gasp!! $545.00!! Yikes!! I thought ours was bad when it hit $300.00 Our whole house is electric except the gas water heater. If we ran our electric heaters(base board), the bill jumped to $600. One month of that and it was time to invest in a wood heater. $700 dollar high efficiency wood stove, and the electric bills went back down under $300 dollars. Ran our lights at night, taking advantage of off peak hours. Also much cooler at night. We even ran an a/c unit during the 12 hour on cycle as well. Your ladies truly look amazing bro. I noticed much more denser/darker leaf growth when running LED in conjunction with HPS. Not much improvement in bud production though. But was hard to guage, as we made numerous changes without being able to document correctly. Make ONE change, document for a period, then make another change, document, should have been the way to proceed for us.