I was under the impression that “grid forming” as opposed to “grid following” inverters were not a solved problem. Can you cite any battery plant with documented tests of energizing transmission or distribution systems?
https://www.ercot.com/files/docs/2024/01/12/Tesla%20BESS%20G...
Gambit Energy, owned by Tesla in Texas. Megapack supports grid forming in production (Hawaii and South Australia installations as well). “Virtual Machine Mode.”
It is solved, which shouldn’t be controversial considering Tesla’s power control maturity.
https://cleantechnica.com/2024/07/14/new-grid-forming-invert...