Interconnection queue › California › Hydro

Hydro Projects in the California Interconnection Queue

Snapshot of 2026-09-07 · 15 projects

15 hydro projects are in the interconnection queue with a California location, totaling 6,433 MW across the 15 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	15	6,433 MW

By status, as published

Status	Projects
WITHDRAWN	11
ACTIVE	2
COMPLETED	2

Top counties

County	Projects	Capacity
RIVERSIDE	4	5,508 MW
TEHAMA	3	6 MW
PLACER	2	31 MW
SAN DIEGO	1	40 MW
TUOLUMNE	1	7 MW
HUMBOLDT	1	40 MW
MENDOCINO	1	40 MW
SAN LUIS OBISPO	1	650 MW
MARIPOSA	1	110 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
EAGLE MOUNTAIN PUMP STORAGE #4 ID 1193	CAISO	RIVERSIDE	1,408	WITHDRAWN	2015-04-30	not published
EAGLE MOUNTAIN PUMP STORAGE #2 ID 567	CAISO	RIVERSIDE	1,400	WITHDRAWN	2010-02-01	not published
EAGLE MOUNTAIN PUMP STORAGE #3 ID 697	CAISO	RIVERSIDE	1,400	WITHDRAWN	2011-03-31	not published
EAGLE MOUNTAIN PUMPED STORAGE PROJECT ID 369	CAISO	RIVERSIDE	1,300	WITHDRAWN	2008-05-16	not published
MORRO BAY WAVE ENERGY PROJECT ID 1153	CAISO	SAN LUIS OBISPO	650	WITHDRAWN	2015-04-30	not published
EXCHEQUER ID 1355	CAISO	MARIPOSA	110	WITHDRAWN	2017-05-01	not published
LAKE HODGES PUMPED STORAGE PROJECT ID 13	CAISO	SAN DIEGO	40	COMPLETED	2003-01-03	not published
HUMBOLDT WAVECONNECT PROJECT ID 279	CAISO	HUMBOLDT	40	WITHDRAWN	2007-11-30	not published
MENDOCINO WAVECONNECT PROJECT ID 280	CAISO	MENDOCINO	40	WITHDRAWN	2007-11-30	not published
LAKE CLEMENTINE HYDROELECTRIC C7 ID 1013	CAISO	PLACER	16	WITHDRAWN	2014-04-30	not published
LAKE CLEMENTINE HYDROELECTRIC ID 962	CAISO	PLACER	16	WITHDRAWN	2013-04-30	not published
TULLOCH POWERHOUSE ID 495	CAISO	TUOLUMNE	7	COMPLETED	2009-07-31	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.