LAKE ELSINORE ADVANCED PUMPED STORAGE PROJECT
500 MW storage in Riverside, CA · In queue since June 2005 · Proposed COD December 2028
500 MW
Capacity
1
Components
Pumped Storage
20y 11m
In Queue
IA Executed
IA Status
Signed Aug 2012
Queue → IA
7y 2m
IA → COD
16y 4m
Total Duration
7y 2m
Interconnection request submitted to ISO/RTO
CAISO uses cluster studies where projects are batched annually and studied together.
Typical: 36–48 months (IR to IA)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2028-12-31
The Lake Elsinore Advanced Pumped Storage Project is a proposed 500 MW pumped storage development in Riverside County, California. The project is located within the CAISO region and is interconnected with San Diego Gas & Electric (SDGE). It entered the CAISO interconnection queue as queue ID CAISO-72 on June 21, 2005, with a proposed commercial operation date of December 31, 2028.
The project's Interconnection Agreement (IA) was executed on August 11, 2012. The point of interconnection (POI) is the proposed Lee Lake Substation at 500 kV. The Lake Elsinore Advanced Pumped Storage Project has been the subject of recent news coverage related to regulatory matters.
Generated from interconnection queue and public data sources
State
CA
County
Riverside
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SDGE
Entity
CAISO
Service Type
—
Point of Interconnection
Proposed Lee Lake Substation 500 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_NP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- SPCJCT_1_B1
- POI Substation
- Lee
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
Last updated 2026-03-31
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