In a thrilling final installment in my current (no pun intended) obsession with power consumption at home, I took some time to go around the house switching things off and on to get an idea of where power is still being used despite things being notionally ‘off’.
In a pretty unscientific experiment, I turned off everything in the house except the Current Cost meter, then went around switching things on and noting roughly how much power they use. Curiously, with nothing on except the meter, it was still showing around 60W of consumption. I’m not sure where this is coming from, but it’s constant.
Here’s the list of devices around the house that I measured:
Fridge 50W (when running) Sky 30-50W NAS 65W (on 1600-midnight weekdays, 24hrs weekend) Mac mini 20W Airport 4W Router 5W Xbox 360 10W Wii 5W (in 'red' standby, 10W in 'amber') TV 5W Xbox 5W Amp 5W Subwoofer 5W Phone 5W (two cordless chargers) Laptops 2W (two chargers) Mobiles 1W (two chargers) Boiler 2W Microwave 3W Appliances 2W (oven / dishwasher / washing machine) Pong clock 3W
So this highlights mostly that we have too many gadgets. I reckon we could save about 40W by completely switching off some of the stuff in the living room when it’s in ‘standby’. Assuming usage of 4 hours per day and the rest of the time on standby, at roughly 20p per kWh, we’d save nearly £60 a year by switching them off – definitely worth investing in a ‘standby saver’ adapter, I think… Or just getting rid of the gadgets!