It looks like electrical equipment of that scale tends to confined to substations, power plants, and other controlled areas.
When it comes to robustness, you often see power after a hurricane supplied by gasoline powered generators, with the gasoline supplied by any means necessary. (When the last hurricane hit here, gasoline was available for quite a long time before the grid was repaired.)
This is something often overlooked when comparing fossil to electric fuels, on any average car you can "charge" enough fuel for 600miles in 10min whereas on an electric you need to charge for 75min to be able to make 350miles and that's if you have a supercharge station available.
https://www.quora.com/Is-there-enough-lithium-in-the-world-t...
Even if we can't get Cobalt to 0% (and there is plenty of research into other battery composites happening right now), the problems with Cobalt seem less to do with scarcity and a lot more to do with geopolitics (Cobalt is primarily sourced today as byproduct extracts of mines for minerals such as nickel in countries like Columbia and the Democratic Republic of the Congo). There's even indications that cobalt could be recycled from existing battery composites (as we do today already for lithium), but no economic incentive to do such because it isn't scarce enough to try.