Electricity in a zombie apocalypse is an interesting topic because if you have lights on or any sort of generators creating noise its going to create attention to yourself not only from zombies but also looters who want to take what you have. I'd hunker down and pretend no one was home unless obviously you have a big enough secured compound that no one will bother you.
How about a Zombie Proof House?
Zombie Proof House | HumanZombies