Battery Storage Addition (to QP1086) (ISO-NE-1261) — Project Summary

Queue ID
ISO-NE-1261
Capacity
160 MW
Technology
Solar+Battery
Status
active
Location
Knox, ME
Region
ISO-NE
Developer
IA Status
IA Executed

Battery Storage Addition (to QP1086)

ISO-NE-1261BetaActiveSolarBatteryISO-NELBNL + Live

160 MW hybrid in Knox, ME · In queue since May 2022 · Proposed COD November 2026

BA: ISISO/RTO: ISONENERC: NPCCRC: ISNE

160 MW

Capacity

1

Components

Solar

4y 2m

In Queue

IA Executed

IA Phase

COD target: 2026

Interconnection

Total Duration

4y 6m

Construction75%
Queue EntryMay 17, 2022

Interconnection request submitted to ISO/RTO

TCS Study

ISO-NE is transitioning to cluster studies per FERC Order 2023.

Typical: 25–30 months (recent)

Interconnection Agreement

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2026-11-30

Cross-source intelligence
Beta
Low confidence·0 sources·as of 2026-06-01
Expected COD
2026-11-30
From queue filing
Developer
Status
Active
Active — IA Executed, battery storage addition to existing QP1086 solar facility
Financing
Unannounced
Key milestones
IA executed2022Most recent

Interconnection Agreement executed per LBNL queue status

About

The Battery Storage Addition (to QP1086) is a proposed 160 MW hybrid solar and battery energy storage project located in Knox County, Maine. The project consists of 160 MW of solar generation. It is listed in the ISO-NE interconnection queue as queue ID ISO-NE-1261, with an interconnection queue entry date of May 17, 2022, and a proposed commercial operation date of November 30, 2026. The interconnection agreement for the project has been executed.

The project is interconnected to the CMP 115kV line Section 80. 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.

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See the full development-risk decomposition for this project.

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

State

ME

County

Knox

Grid Region

ISO New England

Market

ISO/RTO Member

Developer

Utility

Entity

ISO-NE

Service Type

ERIS

Point of Interconnection

CMP 115kV line Section 80

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
ISO-NE
Trading Hub
.Z.MAINE
Hub Confidence
MEDIUM

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