You mention microgrids, but what about energy storage systems? Geomagnetic storms typically last minutes ot hours, so if I have even a 4 hour battery in my home, with an inverter, I’m a lot less susceptible to grid failures. And if everyone does, the grid operators have more options for shutting down parts of the grid to prevent equipment failures without causing blackouts. If most large centralized generating facilities have energy storage, then temporarily shutting down parts of the grid does not need to involve much loss of energy production.
You mention microgrids, but what about energy storage systems? Geomagnetic storms typically last minutes ot hours, so if I have even a 4 hour battery in my home, with an inverter, I’m a lot less susceptible to grid failures. And if everyone does, the grid operators have more options for shutting down parts of the grid to prevent equipment failures without causing blackouts. If most large centralized generating facilities have energy storage, then temporarily shutting down parts of the grid does not need to involve much loss of energy production.