For two straight afternoons, the power has gone kaput in our subdivision due to lightning strikes. With a 2 yr old and another baby on the way, I'd like purchase a generator.

How does one compute the required power specs? I'd like to power at least 2 lights, two electric fans and my Internet modems and router. Powering a 1hp AC would be nice but not required.

What should I be looking for and where?