The government data source for this battery is the U.S. Energy Information Administration (EIA)
https://www.eia.gov/electricity/monthly/
Info from the 2024-02 report (Project first appeared in the 2023-03 report):
Plant Name / State
Superstition Energy Storage / AZ
go live / power
2024-06 / 90MW
status / status verbose
planning / (T) Regulatory approvals received. Not under construction
Plant id / generator id
66333 / BESS4
Entity name / entity id
Superstition Energy Storage, LLC / 65419
Changes: 2023-08
status_verbose: (P) Planned for installation, but regulatory approvals not initiated -> (T) Regulatory approvals received. Not under construction