Storage in principle is simple because you only need one method that is universally applicable. Storage in practice is complicated just because you always want

Storage in principle is simple because you only need one method that is universally applicable. Storage in practice is complicated just because you always want to use the cheapest and most useful alternative in each place and time, which will be no more expensive than the universal method, and often cheaper. But for planning, the universal method is good enough. We already know we can make, tank, and transport any amount of, e.g., anhydrous ammonia, anywhere and at any scale, and can burn any amount of anhydrous ammonia (in existing gas plants) for power, anywhere and at any scale. It has a round-trip efficiency of X, requiring top-line generation with capacity factor Y of 1/XY, which we know we can afford. And that suffices. We have not built out much storage yet, specifically because the costs of storage alternatives are in free fall, just as costs for wind and solar generation plummeted in the past, but faster. So, building out storage next year gets you a lot more storage than building out this year. Storage method X is likely to be undercut by method Y next year. Projects X "fall apart" because methods Y are turning out cheaper, just as concentrated-solar projects fell apart when photovoltaics undercut that. Falling apart is bad for whoever put money into those, but very, very good for the rest of us. In the meantime, money is much better spent on top-line generating capacity, because you will need that to charge up the storage from, anyway. And, your dollar gets by far the most top-line generating capacity building photovoltaic solar and wind. Tying that dollar up in a nuke project that won't deliver anything at all for years, if ever, and more dollars buying coal in the meantime, is the opposite of good strategy.