said by dcurrey:
Your only other option would be water powered sump pump. This would work nicely if it can keep decent water pressure and be able to keep up with flow.
Big issue with that would be the water bill as well as most municipalities don't want you dumping all that water into the sanitary sewer system. If you're on a septic you're going to fill your tank.
The thought for us is it would run enough (hour or 2) for the power to come back on or us to hook up the generator.