I can not believe not one of you guys did not present the BEST OF ALL WAYS to save power on a small grow like his........
First off... DO NOT GROW DURING THE HOT SUMMER MONTHS...
Grow during the cool fall, winter, or spring months, and use the heat from your grow room to heat your home. It is now January, and my heat is never turned on at all.. no need.. I do some times have to wear a sweater when I get home from work all hot and a little sticky from the day. And yes I have turned on the heat for like 30 minutes a few time.. I have my lights set up to be off while I am away, and have the heat to turn on at 66 degrees. But it never turns on.
When I first moved to the area where I live now. When I did my first grow, where I live now. I grew during the hot summer months.. WOW... was that stupid.. 118 degrees outside, and I am heating a room to grow buds in.. I had to run an air conditioner to just cool that room, and even then my home AC unit was going BALLS TO THE WALL.. My elect bill then, was 6 times higher then it had ever been on record in that place, at that time of year. But now that I am venting my heat from my room into my living area, and during the winter, my ELECT bill is a little below normal because of all the other things I also do,, like CFL's, keep the heat at 66 degrees, but it rarely goes below 70.
THINK SMART PEOPLE. High TECH is not always the answer.