Interconnection queue › California › Storage

Storage Projects in the California Interconnection Queue

Snapshot of 2026-09-07 · 643 projects

643 storage projects are in the interconnection queue with a California location, totaling 148,091 MW across the 643 that publish a capacity.

Grouped from the ISOs' own fuel codes (see the mapping). Codes we could not match to a published definition are left unclassified rather than assigned here.

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By ISO

ISO	Projects	Capacity
CAISO	643	148,091 MW

By status, as published

Status	Projects
WITHDRAWN	475
ACTIVE	126
COMPLETED	42

Top counties

County	Projects	Capacity
SAN DIEGO	91	12,138 MW
KERN	62	13,316 MW
LOS ANGELES	53	15,069 MW
FRESNO	42	10,356 MW
RIVERSIDE	38	15,908 MW
SAN BERNARDINO	34	9,511 MW
CONTRA COSTA	28	5,219 MW
ALAMEDA	27	4,629 MW
SAN JOAQUIN	25	4,891 MW
SANTA CLARA	24	3,697 MW
TULARE	16	3,712 MW
SAN LUIS OBISPO	16	7,654 MW
ORANGE	12	2,686 MW
IMPERIAL	11	4,313 MW
SOLANO	11	3,665 MW

Largest projects with published capacity

The 12 highest-capacity rows in this page's exact scope, ordered by the capacity the ISO published. Projects without a published capacity are not ranked here and remain included in the totals above.

Project	ISO	County	MW	Status	Queue date	Proposed operation
EDGEWOOD SOLAR HYBRID ID 1715	CAISO	FRESNO	1,700	WITHDRAWN	2020-04-15	not published
EMPIRE ID 2030	CAISO	SAN BERNADINO	1,600	WITHDRAWN	2021-04-15	not published
PINEBROOK SOLAR HYBRID ENERGY CENTER ID 1581	CAISO	FRESNO	1,500	WITHDRAWN	2019-04-15	not published
NIMITZ 1 GENERATION ID 1589	CAISO	SAN LUIS OBISPO	1,500	WITHDRAWN	2019-04-15	not published
SEAWOLF GENERATION ID 1600	CAISO	SAN LUIS OBISPO	1,500	WITHDRAWN	2019-04-15	not published
HOLMAN ID 1889	CAISO	MONTEREY	1,500	ACTIVE	2021-04-15	not published
ISLAY ID 1998	CAISO	SAN LUIS OBISPO	1,500	WITHDRAWN	2021-04-15	not published
IRON HILLS PUMPED STORAGE ID 1525	CAISO	RIVERSIDE	1,400	WITHDRAWN	2018-04-16	not published
SANBORN HYBRID 3 ID 1632	CAISO	KERN	1,400	ACTIVE	2019-04-15	not published
ETERNAL PUMPED STORAGE ID 1759	CAISO	RIVERSIDE	1,400	WITHDRAWN	2020-04-15	not published
ETERNAL 2 ID 2050	CAISO	RIVERSIDE	1,400	WITHDRAWN	2021-04-15	not published
ANGELENO SOLAR FARM ID 1625	CAISO	LOS ANGELES	1,150	ACTIVE	2019-04-15	not published

Where each number came from

ISO	We last read	Source last changed	Source
CAISO	2026-09-07	2026-09-07 (changed this snapshot)	source file

This week's changes · How this is collected

Compiled from each ISO's own published interconnection queue report. Queue position is not a permit, a contract, or a guarantee that a project will be built; most projects in every queue are eventually withdrawn. Figures are reproduced as published, are provided for informational purposes only, and carry no warranty of accuracy or completeness. Always verify against the ISO's own report before relying on any figure.