I have a very efficient setup that's also very new construction. Steel framed, mostly polished concrete floors, lots of large windows and thermal heat pumps.

I have a very efficient setup that's also very new construction. Steel framed, mostly polished concrete floors, lots of large windows and thermal heat pumps. Plus the thermostat I originally had I felt I had set conservatively. Bought a Nest, and it still managed to save enough to pay for itself in about 15 months. Staggering to have an electric bill in the $40-50/mo range.