Afraid the grid may go out due to weather? Or possibly some electromagnetic pulse situation? Maybe you are in an area where service is run off diesel generators and is intermittent with power…..Take a look at this article from Practical Survival (http://practicalsurvivalist.com/how-to-build-a-simple-battery-backup-power-station-for-off-grid-living/). The battery set up is cheap, obtainable and downright easy compared to many systems.
Possibly this type of set up would allow you to build that seasonal cabin you always wanted but could not get your significant other to buy into????