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POPSIdle PS3s cost you $250 a year in energy bills. This may convince you to turn off your consoles. According to research conducted by Australia-based Choice, folks who don't physically turn off their PS3 (by flipping the power button) will add $248.28 to their electric bill a year. An idle Xbox 360 costs $184.32 in energy consumption. Idle Nintendo Wiis cost a mere $23.26. The only consumer electronic product tested that rivals the PS3 is Plasma TVs, which cost $232.10 a year if left powered on.