Comment by jordz

I work in the industry making hardware and software for large scale commercial and grid scale storage.

There are several challenges with this, safety, thermal runaway, and life cycle of the asset which has a limited amount of cycles.

Also the architecture of the system for the AC inverters and the DC side can come from very different places in the supply chain and aren’t as vertically integrated leaving you in a position where you can’t actually make this work without compromising something in the supply chain. That being said we are talking about a LOT of energy in these systems and to dissipate that much heat you’d need a load bank.