Those early reg-d PJM batteries also got absolutely physically wrecked, so it wasn’t the best outcome.
ERCOT is quite different from PJM when it comes to AS - the market is very deep and the operational needs are increasing in a way they aren’t in PJM (yet). Couple that with a vastly easier permitting regime and hugely faster interconnection process for a facility (batteries) that require relatively little land compared to conventional generators, and Texas has enabled ERCOT’s queue to become absolutely stuffed full of battery applications.
PJM was ahead of the ball on market design, but that was a (relatively) long time ago. Now they’re in the midst of their massive backlog queue transition and also revamping (for the nth time) facets of their capacity market.
ERCOT is quite different from PJM when it comes to AS - the market is very deep and the operational needs are increasing in a way they aren’t in PJM (yet). Couple that with a vastly easier permitting regime and hugely faster interconnection process for a facility (batteries) that require relatively little land compared to conventional generators, and Texas has enabled ERCOT’s queue to become absolutely stuffed full of battery applications.
PJM was ahead of the ball on market design, but that was a (relatively) long time ago. Now they’re in the midst of their massive backlog queue transition and also revamping (for the nth time) facets of their capacity market.