That was our theory when we lived in an apartment, and it's still a guiding principle for us now that we have a house. We can do without power by stocking up on work-arounds like batteries, solar chargers, alt. fuel for cooking, candles, lanterns, etc. Warmth is our biggest concern, but that can be tackled without power too, it's just more redumentary, like sweaters and blankets.

When we lived on the 24th floor during the 2003 East coast black out, we didn't have to worry about warmth but a lack of running water was an issue we were il-prepared for. Not to mention that 24 flights of stairs is a long walk, especially with a little kiddo.