Do Ammonia Crackers make sense?

An Ammonia cracker that you seldom use, is an efficient form of energy storage.

You convert electricity to green hydrogen, then to green ammonia.

You store that in big tanks, since ammonia is used on an industrial scale.

If the winter is extra cold, or you get blockaded, or the international price jumps, then you have the option of reusing the ammonia that you've stockpiled for power.

Ideally you don't, so you can build the other infrastructure to meet the average demand, but it's there as a cheap backup.