The important thing is to use FPGA, all electricity prices will go up since it's a free market. So it doesn't matter if you live in a country with lots of hydro like me (Sweden has 50% hydro) our corporations will just sell to Germans for a lot of money when peak oil hits.
Well, rest assured we are fine till "peak oil hits" !
FPGA is a long way off being as good in terms of $/mhash compared to GPUs.