Floresent bulbs are usually???? 12 watt. Not sure, should say on it sumwhere, but I'm refering to incandesents in a refector dome. Heat pads, heating cables all that have a wattage printed some where. All easy to figure out to penny. I had a roomate once who was afraid of the dark or something, and we share da light bill. Just in case ur all wondering, I'd wake up and every light would be on. Me personally, can see in the dark. LOL