BELLEFIELD 3 SOLAR FARM

CAISO-1779BetaActiveSolarBatteryCAISOLBNL + Live

300 MW hybrid in Kern, CA · In queue since April 2020 · Proposed COD April 2027

300 MW

Capacity

Components

Solar + Battery

6y 1m

In Queue

IA Executed

IA Status

Signed Jun 2023

Status

Latest milestonePhase 1 construction completed · 2025-06-11PR Newswire · 2025-06-11

Expected COD2026PR Newswire · 2025-06-11

Interconnection

Queue → IA

3y 2m

IA → COD

3y 10m

Total Duration

3y 2m

Construction75%

Queue EntryApr 15, 2020

Interconnection request submitted to ISO/RTO

Cluster Study (Phase I/II)

CAISO uses cluster studies where projects are batched annually and studied together.

Typical: 36–48 months (IR to IA)

Interconnection AgreementJun 28, 2023

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2027-04-01

Technology

Solar150 MW · 50%

Battery150 MW · 50%

About

The Bellefield 3 Solar Farm is a proposed 300 MW hybrid solar and battery energy storage project in Kern County, California. The development project, which consists of 150 MW of solar photovoltaic generation and 150 MW of battery storage, is located within the California Independent System Operator (CAISO) region and interconnects with Southern California Edison (SCE) at the Windhub Substation 230kV.

The project, identified by queue ID CAISO-1779, entered the CAISO interconnection queue on April 15, 2020, and has a proposed commercial operation date of April 1, 2027. An Interconnection Agreement (IA) for the project was executed on June 28, 2023. The Bellefield 3 Solar Farm project has been mentioned in recent news coverage.

Generated from interconnection queue and public data sources

CAISO Queue

Project Details

State

County

Kern

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

—

Utility

SCE

Entity

CAISO

Service Type

—

Point of Interconnection

Windhub Substation 230kV

Data Source

LBNL + Live

DeveloperAvantus±PV Tech · 2023-06-07

TransactionAcquisitionPV Tech · 2023-06-07

OfftakerAES Corporation±PV Tech · 2023-06-07

PPA structurePhysicalPV Tech · 2023-06-07

PPA term15 yearsPV Tech · 2023-06-07

Market Context

Approximate

ISO / RTO: CAISO
Trading Hub: TH_SP15_GEN-APND
Hub Confidence: MEDIUM
Nearest Node (Estimated): ALTA6B2_7_N003
POI Substation: Windhub 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.

News & Articles (3)Beta

Last updated 2026-04-09

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BELLEFIELD 3 SOLAR FARM (CAISO-1779) — Project Summary

BELLEFIELD 3 SOLAR FARM