I know they make a/c units that are programmed to come back on after a power surge, yours might not be one of them.

As for not burning your plants in the event of a power surge and the a/c shuts off, you can get Thermostat that you plug your ballast into that will shut off the light if it goes over your set temp. I have one made by green air, I think there about $80.
Hope that helps :thumbsup: