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In case of a weather or natural damage outage, each distributed system has to be taken of grid. This is necessary for the safety of those repairing the damaged grid. So each house or commercial building has to have an emergency disconnect that is activated when a break occurs. That is already part of the codes.

But that doesn't mean that the individual building has to shut down its power. So even without storage, you have power as long as the sun is shining or the wind blowing depending on your personal mix. And this is why every system should have a minimum of 2 days stored power. That two days is at least partially replenished each day the sun shines or wind blows and gets stretched out to a week or more after the storm or accident. If nothing more it gives these people a chance to save their food, warm up during the day, have hot meals during the day and only have to tolerate cold at night. And that is a lot easier if one can get their core temperature up during the day.

If it is one of the disbursed utility installations that can be isolated without shutting down service to users and the distributed installations can power the grid with conservation measures. Or with the excess capacity that is built in to handle routine maintenance. Even coal plants have to shut down periodically for maintenance.