Compared to basically every other appliance you have plugged in at home, the Playstation 3 sucks up more juice. That's according to a new study by Australian consumer agency Choice, which found that when a PS3 is running, it sucks up five times more energy than a refrigerator. If you leave it on all the time for something like Folding@Home, you're looking at an energy cost of nearly $250 a year.