Macworld: "Tech lessons from 72 hours without electricity" - "Backup batteries, solar charges, and UPS boxes kept me afloat during three days mostly cut off from the world."
Yes, it's awful to be off the internet for a couple hours. As somebody who has lived through several New England snowpocalypses, I would also recommend appliances that run off of camp propane canisters like a camp light, camp heater, and a camp stove. Personally, I also have a cord of hardwood to burn if things get a little rough. Think Frontierland.