You build what works best for the site. Anhydrous ammonia tanks can be anywhere, but are most useful near a port where surplus is easily shipped out and fill-in

You build what works best for the site. Anhydrous ammonia tanks can be anywhere, but are most useful near a port where surplus is easily shipped out and fill-in for shortfalls shipped in. Tankage is always cheap. The cost for electrolysers is amortized over not just the time to refill local tankage, but over all the time when surplus power is available, generating direct revenue. The presence of electrolysers makes overbuild of top-line generating capacity an obvious win, because it is always generating income.