Agreed, but I kinda get the feeling that generators are on their planned list of items. I really feel like we should have roving bands of zombies. Once you add in generators they’d be attracted to the noise. So you’d have to fortify your house pretty good. Also, if it’s a gas generator, you should have to put it outside or deal with smoke accumulation inside. So as for generators, I’d more have a question about what are the current plans for them, if any, and get more into detail about how they should function. You could go the somewhat simpler route and add them as a stationary vehicle type construct.
I hear you about the batteries current, but I’m wondering about solar panels and storage batteries. Couldn’t you use these too? You also have questions about powering the structure. IE, being able to have lights in rooms and the refrigerator helping preserve food. Also, if you can get power, shouldn’t you only be able to get water from a house that has power? Otherwise the water pump isn’t working.
IRL to supply power to a structure that is tied into the grid you need to switch the circuit breaker so you don’t feed back into the larger power system. Though obviously there are work arounds for this IRL as people can have solar panels on their house. Maybe add a single tile to the outside of every building to provide a power hook up/circuit breaker switch. Power Box?
Then you have to consider buildings that would have emergency generators, such as police stations, firestations, hospitals, military buildings, etc… Why don’t you rename the thread to generators and we can start the discussion for em here? 
