our electric is about 11 cents a KW hour. so 3000KWh = $330. I could even go higher cause my normal electrical bill in the houses i have lived in have been 300-500 dollars. Kids go through alot of clothes and leave alot of lights on.

Consider my math is based on 16 hours a day usage, and that wont be all the time, since part of the time will be 12/12

There will be no other electricity usage besides pumps, and fans, and any other minor usage.

I am counting on the fact the grow room is in a room in a finished room sorrounded by other finished rooms. As we are coming into winter, there will be no need for AC. I am planning on using a CAN filter which i already own to pull air out of the room, push into another room and pull that air back into the room. That way i should be able to provide enough fresh air, while keeping the temps up. I am considering running the lights at night while it is the coldest to keep the room warm.