Prepare in case it happens in our lifetimes? :

 http://www.spacedaily.com/reports/Severe_Space_Weather_999.html

""Electric power is modern society's cornerstone technology on which virtually all other infrastructures and services depend," the report notes.

Yet it is particularly vulnerable to bad space weather. Ground currents induced during geomagnetic storms can actually melt the copper windings of transformers at the heart of many power distribution systems."

Have fun, There are huge areas of the industrial world that are at risk of severe breakdown if there is a magnetic storm of the intensity that happened about eighty years ago. If you connect up your home generating system to sell electicity to the grid the blow back could blitz your system. It would be wise to give some thought to protecting your home system from the direct effect without such a connection.