Air conditioner that stores cold in ice for later

[SunEagle]

I expect that most energy storage companies will try to sell their product to the POCO first since they have the deep pockets to purchase that technology.

[DanKegel]

And indeed, So Cal Edison bought some ice storage (along with some solar and a bunch of other storage kinds) recently:
https://www.sce.com/wps/portal/home/.../lcr/!ut/p/b1/

(And according to https://vimeo.com/156725165, that was their big break; before that, it was all pilots.
A few other storage vendors on that very recent panel discussion, it's fairly interesting.)