So the suggestions are kazakstan, cuba, mexico, ukraine, norway, iceland. That's interesting, because only two of those are in the wikipedia page on electricity pricing:
http://en.wikipedia.org/wiki/Electricity_pricing#Price_comparisonOut of these, iceland and norway seem the most suitable for westerners interested in bitcoin mining when you consider safety and language barriers.
How reliable are these power sources though? I can't imagine them being very stable.