Where do you live that electricity is actually 7c/kWh? I didn't really pay attention to my power bills until I moved to Florida, but down here, the real price is 14-17c/kWh; the actual kWhs are quoted as something like 7c but then they add a 7c/kWh fuel surcharge and additional fees after you cross certain usage thresholds.
My uncle in Wesley Chapel (Tampa) is paying ~7 cents/kwh from their local coop, I pay as low as 1 cent a kwh for 6-12 hours a day from Exelon's nuclear power in Northern Illinois.
