That's not really that huge an issue. If you had said MONTHS, two or three MONTHS without electricity would be nothing short of the apocolypse. But i could easily go a few days of just having fish and chips for dinner, or a sandwhich. Ok, most of the stuff in the fridge might spoil, but then i supose we would just make some sort of pie.
Bottom line, so long as my DS and books don't spontaneously combust, or my house gets levitated 200 ft from the ground, i should be fine... any longer than that and i WILL become a cannibal. A few weeks, if someone comes to check in, they won't find me: they will find some demented golum-esque creature, with somebodies arm in my mouth. Pale skin and jagged teeth, no hair but a massive beard.