sodium. gravity. carbon capacitors. lead acid. molten salt. air pressure. flywheel.
there's alllll kinds of battery storage solutions, and for grid storage just about anything other than lithium can be used because lithium is really only useful for power density applications where weight and size of the battery matters like cars and planes.
nuclear fission is dead. fusion is the only nuclear worth talking about and that's still years, probably decades away from being actually useful.
so then: solar, wind, wave, hydro, geothermal, and all kinds of batteries is what we have now and can do cheaply and do everywhere and do it now.
this is a concept i've been trying to put into concrete terms for myself and you just, like, fuckin nailed it right down. thank you so much.