Don’t know, not sure. Looking at my neighbor’s set-up, the panels are wired into a panel which hooks it to the grid. I see no way of taking it off-grid without dismantling parts of it. I’m not sure how their contract reads, I’m not sure they really “own” the panels. You don’t know what you don’t know.

That said, there are optional battery systems that could be installed so the panels could still be useful during a grid outage. But that optional battery installation comes at a price ($$) and you need a place to install the battery bank. Most people who have these systems installed do it to save money on their monthly electric bill. Paying more out of pocket to have electricity when the grid shuts down is not part of the plan.

Eventually I’d like to get a system big enough to keep the refrigerator running during a power outage. That alone would be huge, no need to power everything.