LOS NIETOS (CAISO-2129) — Project Summary

Queue ID
CAISO-2129
Capacity
102.26 MW
Technology
Battery
Status
active
Location
Orange, CA
Region
CAISO
Developer
IA Status
IA Executed

LOS NIETOS

CAISO-2129BetaActiveBatteryCAISOLBNL + Live

102.26 MW storage in Orange, CA · In queue since April 2021 · Proposed COD April 2031

BA: CISOISO/RTO: CAISONERC: WECCRC: RCW

102.26 MW

Capacity

1

Components

Battery

5y 3m

In Queue

IA Executed

IA Phase

Signed Aug 2025

Interconnection

Queue → IA

4y 4m

IA → COD

5y 8m

Total Duration

4y 4m

Study Phase

C14

Construction75%
Queue EntryApr 15, 2021

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 AgreementAug 4, 2025

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 6–18 months

Commercial Operation

Proposed COD: 2031-04-26

Cross-source intelligence
Beta
Low confidence·3 sources·as of 2026-06-01
Expected COD
Apr 2031
From queue filing
Developer
RE Los Nietos LLC
From queue filing
Status
IA Executed
IA Executed — interconnection agreement signed August 2025, project remains in pre-construction phase
Financing
Unannounced
Key milestones
IA executedAug 4, 2025Most recent

Large Generator Interconnection Agreement executed with CAISO

source
About

The Los Nietos project is a proposed 102.26 MW battery storage project located in Orange County, California. The project is interconnected to Southern California Edison (SCE) and is in the California Independent System Operator (CAISO) queue as entry CAISO-2129, with a queue entry date of April 15, 2021. The proposed commercial operation date is April 26, 2031.

The project's interconnection status is currently in the System Impact Study phase. Recent news coverage has discussed the development project.

Generated from interconnection queue and public data sources

Development Risk

Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Financing close probability
EPC + tax-equity counterparty
Project Details

State

CA

County

Orange

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

Utility

SCE

Entity

CAISO

Service Type

NRIS

Point of Interconnection

Johanna Substation 230 kV

Data Source

LBNL + Live

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.

Available on the InfraSure platform

See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Generation Forecast

Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

10-year P50 forecast
First-year output estimate
Weather + policy scenarios
Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

10-year revenue projection
First-year DSCR
Financing close risk
Market Context
Approximate
ISO / RTO
CAISO
Trading Hub
TH_SP15_GEN-APND
Hub Confidence
MEDIUM
Nearest Node (Estimated)
JOHANNA_2_N007
POI Substation
Johanna 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.

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InfraSure platform

Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.