It seems quite possible that a solar caused pulse could take out the grid
without affecting an off grid or battery backed grid tie solar system. In fact
it's already happened:
http://en.wikipedia.org/wiki/March_1989_geomagnetic_storm

Dick Ratico
Solarwind Electric 



--- You wrote:
Good answer Wayne...how strong AND how far away. I'm sure the inverse-square law
apples here but if you don't know the initial power and distance, it does not
matter much anyway. 

Now, for a hilarious interjection, there is a customer in our showroom at this
moment asking about PV solar in case there is am EMP that takes out utility
power! So funny.

Larry
--- end of quote ---

