Comment by pfdietz

That's an alternative for the seasonal storage problem, and currently the cheapest one. That doesn't mean other alternatives don't exist, just that those alternatives are not currently competitive with fossil fuels.

One should not use this situation that those alternatives can't exist or be reasonably expected to exist, or that a system using them would be more expensive than a system using nuclear. If that were a valid argument, one could equally argue that because new nuclear cannot compete with natural gas combined cycle for baseload, new nuclear is not an option.