South Willow
413.3 MW generation in Yolo, CA · In queue since April 2023 · Proposed COD December 2030
413.3 MW
Capacity
1
Components
Solar
3y 1m
In Queue
Not Started
IA Status
COD target: 2030
Total Duration
7y 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: 2030-12-31
South Willow is a proposed solar generation project located in Yolo County, California, with a total capacity of 413.3 MW. The project, which appeared in recent news, is in the California Independent System Operator (CAISO) interconnection queue as entry CAISO-54802. The queue entry date is April 17, 2023, and the proposed commercial operation date is December 31, 2030. As of the latest data, the interconnection agreement (IA) status is "Not Started."
The project is interconnected with Pacific Gas and Electric (PGAE) at the Rio Oso 230 kV point of interconnection. The project consists of 413.3 MW of solar photovoltaic generation.
Generated from interconnection queue and public data sources
State
CA
County
Yolo
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
—
Point of Interconnection
RIO OSO 230 kV
Data Source
LBNL
- ISO / RTO
- CAISO
- Trading Hub
- TH_NP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- RIOOSO_1_N033
- POI Substation
- Rio Oso 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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