They are better and cheaper than ever. Everybody should get some, with deep cycle batteries, just to run critical systems.
I have been involved with getting electricity into a hangar and we put together a solar system. They really are cheaper than ever and very affordable. Batteries are a tad not-so-cheap but they have come a long way both in storage and reliability. It is easy to get a simple 100 to 250 watt watt system with LED lighting and electricity outlets to power radios and rechargables. Anyone can do it.