Interconnection queueCalifornia › Hydro

Hydro Projects in the California Interconnection Queue

Snapshot of 2026-08-10 · 15 projects

15 hydro projects are in the interconnection queue with a California location, totalling 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

ISOProjectsCapacity
CAISO156,433 MW

By status, as published

StatusProjects
WITHDRAWN11
ACTIVE2
COMPLETED2

Top counties

CountyProjectsCapacity
RIVERSIDE45,508 MW
TEHAMA36 MW
PLACER231 MW
SAN DIEGO140 MW
TUOLUMNE17 MW
HUMBOLDT140 MW
MENDOCINO140 MW
SAN LUIS OBISPO1650 MW
MARIPOSA1110 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.

ProjectISOCountyMWStatusQueue dateProposed operation
EAGLE MOUNTAIN PUMP STORAGE #4
ID 1193
CAISORIVERSIDE1,408WITHDRAWN2015-04-30not published
EAGLE MOUNTAIN PUMP STORAGE #2
ID 567
CAISORIVERSIDE1,400WITHDRAWN2010-02-01not published
EAGLE MOUNTAIN PUMP STORAGE #3
ID 697
CAISORIVERSIDE1,400WITHDRAWN2011-03-31not published
EAGLE MOUNTAIN PUMPED STORAGE PROJECT
ID 369
CAISORIVERSIDE1,300WITHDRAWN2008-05-16not published
MORRO BAY WAVE ENERGY PROJECT
ID 1153
CAISOSAN LUIS OBISPO650WITHDRAWN2015-04-30not published
EXCHEQUER
ID 1355
CAISOMARIPOSA110WITHDRAWN2017-05-01not published
LAKE HODGES PUMPED STORAGE PROJECT
ID 13
CAISOSAN DIEGO40COMPLETED2003-01-03not published
HUMBOLDT WAVECONNECT PROJECT
ID 279
CAISOHUMBOLDT40WITHDRAWN2007-11-30not published
MENDOCINO WAVECONNECT PROJECT
ID 280
CAISOMENDOCINO40WITHDRAWN2007-11-30not published
LAKE CLEMENTINE HYDROELECTRIC C7
ID 1013
CAISOPLACER16WITHDRAWN2014-04-30not published
LAKE CLEMENTINE HYDROELECTRIC
ID 962
CAISOPLACER16WITHDRAWN2013-04-30not published
TULLOCH POWERHOUSE
ID 495
CAISOTUOLUMNE7COMPLETED2009-07-31not published

Where each number came from

ISOWe last readSource last changedSource
CAISO2026-08-102026-08-10 (changed this snapshot)source file

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is not a permit, a contract, or a guarantee that a project will be built; most projects in every queue are eventually withdrawn.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.

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