There's this article about using small containers: https://solar.lowtechmagazine.com/2018/05/ditch-the-batteries-off-grid-compressed-air-energy-storage.html htt

There's this article about using small containers: https://solar.lowtechmagazine.com/2018/05/ditch-the-batteries-off-grid-compressed-air-energy-storage.html https://solar.lowtechmagazine.com/2018/05/ditch-the-batterie... But it's not talking about using cheap things like plastic bottles. I'd be interested in reading the article you're talking about. It's hard to find much about CAES online because it's easy to run into the crazy people that think they're going to get free energy out of it or something.