In my case with my electricity costs the fact is that the only reasonable thing to do would be to just unplug and buy the bitcoins. The BTC I'm mining at the moment I would need to sell at 5.500 (with present difficulty) to even break even and at present BTC price I would get not far from double amount of BTC buying instead of mining.
Logically it makes no sense to keep it running and incur in loses. But perhaps investing in solar/wind energy could later help reduce your power bills? All you need is a grid tie inverter and panels/wind turbine/etc, no batteries (the grid is your battery).