All water infrastructure in mainland America is stored in large reservoirs / lakes and/or water-towers for future use. If it takes 1GW-hr to make I dunno, a bi

All water infrastructure in mainland America is stored in large reservoirs / lakes and/or water-towers for future use. If it takes 1GW-hr to make I dunno, a billion gallons of water or whatever, then it might be cheaper to store a billion-gallons of water + build a 2nd desal plant rather than trying to build a 1GW-hr Li-ion battery. That's the real question that's being discussed here. What's cheaper? Additional Desal plants + water storage? Or Giant-batteries? Presumably, pumped-hydro is off the table (which is true in some geographies). Pumped-hydro is an effective form of GW-hr sized energy storage but is somewhat frustrating at how limited the geography can be for it in practice.