I have a Goal Zero package-Guide 10 + and the Nomad 7 panel. So far, I have just tinkered with them, but I have been able to fully charge Eneloop AA, taking about five hours for fully depleted batteries. I think it will e a useful means of providing power for flashlights, GPS,, cell phones, and the like. I probably won't take it backpacking. It would be much lighter to simply carry an appropriate number of lithium AAs.

But when the Big One discombobulates my home sweet home, I will pull the GZ out of the wreckage and acquire some electrons. The specter of extensive earthquake damage also dissuades me from erecting a large solar panel....

For much the same reason, I am jaundiced about generators. the stockpiled fuel necessary to run them is likely to become just another ignition point for the fires that so often accompany major earthquakes.....