The power problem is easily solved!

Pick up a portable generator for a few hundred bucks, use it to run the pump when needed. Problem solved.

For a more robust solution, get a proper household generator installed that kicks in when the power goes out and keep your lights, heat and refrigerator going. It'll cost a few grand, but it'll give you peace of mind, and it'll keep you going for as long as you can keep feeding it propane.

For a more environmental solution, install solar and a storage battery. Larger up-front cost, but most solar installs pay themselves back in under 10 years (maybe even faster with the subsidies available now). You have to be a bit more choosy about what circuits you decide to energize with the backup battery, or buy a big honkin' one ... but they do pay for themselves in the long run.

Anybody living in a rural area needs to be prepared for situations when the electricity goes out.