What is the triggering even that makes the a solar install eligible for the rebate? I assume it's when it's actually paid for. Tesla says you don't pay until the system is turned on and operating. If my system is installed in time but the inspection and permission to operate doesn't come until after Dec 31st, do I have any options? What if I pay for the system before the end of the year even though the utilities haven't yet granted permission to operate?