Last month, our house consumed 679 kWh, which cost $60, bottom line (roughly $0.07 per kWh plus taxes and fees). We've got gas heat, so these numbers represent lighting, computers, and appliances. The big bills will be coming this summer, when we need the A/C. I'll be curious to compare them to last year, now that I've got the LED lights in, which both save energy in terms of lumens per watt, but also put out effectively no heat.