Up in the frozen wasteland to the north of you I'm paying about  $0.065/kwh (converted to USD for you). The cooling is provided by mother nature for 6 months of the year and a small collection of cards is heating my home. To the south (the area where you're at) it really doesn't seem to make any sense dealing with the high costs of power and cooling. I feel like Quebec (Canada) is probably ideal because there is so much cheap hydro and as you go North it gets cooler - although not too far north or your internet will suck. Commercially, demand metered I had my own phase converter and was paying about $0.02/kwh. Not free, but almost.