ATHOS POWER PLANT
908 MW hybrid in Riverside, CA · In queue since May 2017 · Proposed COD May 2027
908 MW
Capacity
2
Components
Solar + Battery
9 years
In Queue
IA Executed
IA Status
Signed Dec 2018
Queue → IA
1y 7m
IA → COD
8y 5m
Total Duration
1y 7m
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: 18–30 months
Proposed COD: 2027-05-17
The Athos Power Plant is a proposed 908 MW hybrid solar and battery project located in Riverside County, California. The development project, consisting of 458 MW of solar and 450 MW of battery storage, is interconnected to Southern California Edison (SCE) within the CAISO region.
The project, identified as CAISO-1405 in the CAISO interconnection queue, entered the queue on May 1, 2017, and has a proposed commercial operation date of May 17, 2027. An Interconnection Agreement (IA) was executed on December 21, 2018. The point of interconnection (POI) is the Red Bluff Substation at 230kV. The Athos Power Plant has been the subject of recent news coverage.
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
Red Bluff Substation 230kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- OBERON_7_N122
- POI Substation
- Red Bluff 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.
Last updated 2026-03-14
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