I have a home music production studio with 15 devices (mixers, synths, processors, amp, laptop, ancient PC). I used a measuring device and even though the PC i

I have a home music production studio with 15 devices (mixers, synths, processors, amp, laptop, ancient PC). I used a measuring device and even though the PC is supposed to use 250 watts or so, the entire studio is only 468 watts! This is a cost of around 4.68 pence an hour (I think a kilowatt here is 10 pence), which isn't bad when a commercial studio costs at least 10 pounds. I'm not a US citizen but this helps you calculate (each value is the cost of a kilowatt): http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html