If you assume a big enough underground salt cavern it's already cheaper to produce 1 GWh of electricity from electrolyzed hydrogen produced from solar power tha

If you assume a big enough underground salt cavern it's already cheaper to produce 1 GWh of electricity from electrolyzed hydrogen produced from solar power than it is from a nuclear power plant. It's not a particularly meaningful milestone, just a sign of how expensive nuclear power is. There are cheaper ways to store power.