The government data source for this battery is the U.S. Energy Information Administration (EIA)
https://www.eia.gov/electricity/monthly/
Info from the 2022-02 report (Project first appeared in the 2020-09 report):
Plant Name / State
Vallecito / CA
go live / power
2021-02 / 10MW
status / status verbose
operation / operation
Plant id / generator id
62801 / ORN34
Entity name / entity id
Viridity Energy Solutions, Inc. / 61522
Changes: 2021-04
status: construction -> operation πΎ π πΈ
status_verbose: (V) Under construction, more than 50 percent complete -> operation
date: 2021-03 -> 2021-02 accelerated by 1 month 2021-02
date: 2020-12 -> 2021-03 delayed by 3 months