UMBRIEL
2,364.76 MW hybrid in Imperial, CA · In queue since April 2021 · Proposed COD June 2035
2,364.76 MW
Capacity
2
Components
Solar + Battery
5y 1m
In Queue
System Impact Study
IA Status
COD target: 2035
Total Duration
14y 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 not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2035-06-05
The UMBRIEL project is a proposed 2364.76 MW hybrid solar and battery energy storage project located in Imperial County, California. The development project consists of 1182.38 MW of solar generation capacity coupled with 1182.38 MW of battery storage. The project is interconnected to the San Diego Gas & Electric (SDGE) grid within the California Independent System Operator (CAISO) region.
The project, identified as CAISO-2166 in the CAISO interconnection queue, entered the queue on April 15, 2021, and has a proposed commercial operation date of June 5, 2035. Its interconnection status is currently in the System Impact Study phase. The point of interconnection is the North Gila - Imperial Valley 500 kV Line. The UMBRIEL project has been mentioned in recent news coverage.
Generated from interconnection queue and public data sources
State
CA
County
Imperial
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SDGE
Entity
CAISO
Service Type
—
Point of Interconnection
North Gila - Imperial Valley 500 kV Line
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- POI Substation
- Imperial Dam
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 2026-03-26
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