Not only during blackouts. Regenerative energies come with a more volatile pricing, and the car will be able to buy power when cheap, provide the cheap power to

Not only during blackouts. Regenerative energies come with a more volatile pricing, and the car will be able to buy power when cheap, provide the cheap power to the home, and sell the unused power when expensive. This induces additional charging cycles on the battery of course, but the additional cycles usually still don't exceed the maximum cycles over the EV's lifetime.