HighDesertDriver said:
Not mentioned yet is the possibility of being able to utilize your grid-tied PV during an outage. Since the Leaf would be supplying 120V/240V power, it could also be supplying the necessary voltage and phase signals for the PV inverter to engage and supply power to the isolated home grid. With the correct signals coming from a source independent of the Leaf and PV, excess PV production could be used to recharge the Leaf. Not saying that this would be particularly easy, but it seems all the major components would be in place for an alternative to a gasoline generator or no power at all.
Unfortunately, it isn't that easy. Most grid-tie inverters cannot throttle down the power produced and assume that there is a grid connected which can absorb all of the extra power. If you start up the inverter with a limited power source (generator, Leaf, etc.), the inverter will either be overloaded or underloaded and will shut down with a fault.