joolzg: I live in .se too. With my 7970 I make at least twice as much as electricity costs. That's not unimportant but my driving force is the anarchist part of it, and a currency that will work even when the world economies go down the drain (yeah I'm a pessimist). Call it an investment or insurance.
I must admit the heat is becoming a serious issue tho. Not to mention the noise. But as long as I get more back than I put in I'll keep going.
OK im just outside of malmo.
Before BTC mining 750sek electricity bill as i have a few linux servers running for various jobs
Last month 1 rig running 2x7970s, bill 1500sek
This month 2 rigs running 2x7970 and 2x6990, bill 2650sek ( and i was on holiday a week, so wife was not using the washing machine/dryer)
The noise was solved by keeping my door closed all the time.
The heat was ok with my window open fully, but now not enough as the temp rises.
so how you can make it work must be due to a different elecy supplier? whos yours? im with EON
Maybe i can ship my rigs to you and pay you a %
joolz