MATTERHORN
1,215.27 MW hybrid in Riverside, CA · In queue since April 2023 · Proposed COD December 2029
1,215.27 MW
Capacity
3
Components
Solar + Wind + Battery
3y 1m
In Queue
Not Started
IA Status
COD target: 2029
Total Duration
6y 8m
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: 2029-12-15
The MATTERHORN project is a proposed 1215.27 MW hybrid solar, wind, and battery energy project located in Riverside County, California. The development project, which has appeared in recent news coverage, consists of 404.89 MW of solar, 404.28 MW of wind, and 406.1 MW of battery storage.
The project is in the CAISO interconnection queue as entry CAISO-55027, with a queue entry date of April 17, 2023, and a proposed commercial operation date of December 15, 2029. The project's interconnection agreement (IA) status is "Not Started." The proposed point of interconnection (POI) is the DEVERS 500 kV substation, and the interconnecting utility is Southern California Edison (SCE).
Generated from interconnection queue and public data sources
State
CA
County
Riverside
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SCE
Entity
CAISO
Service Type
—
Point of Interconnection
DEVERS 500 kV
Data Source
LBNL
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- GARNET_7_N006
- POI Substation
- Devers Substation
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.
