When the Xbox one is in Standby it uses half a watt of energy. When in the standby mode that allows for you to say "Xbox On" it uses 14 watts of energy, for comparison and TiVo Roamio (base model) uses 14 watts of energy. When the Xbox One is on it uses on average 72 Watts. When playing a game is 120 watts, a blu ray playback is 80 watts. Watching TV is around 72. So lets figure you watch 5 hours of TV a Day and paying .25 cents per KiloWatt Hour. Your cost of using the xbox one with it would be $32.85 a year. 0.075 Watts × 5 hours = 0.375 kWh (kiloWatt-hour) of energy. 0.375 kWh × $0.25f/kWh = $0.09 0.09 x 365 days = $32.85 A TiVo Roamio cost $7.3 a year to run. So you're looking at $40.15 a year if you're watching 5 hours of TV/Xbox One every day. Not to shabby if you ask me.