Energy Storage
170 MW storage in Norfolk, MA · In queue since April 2019 · Proposed COD July 2027
170 MW
Capacity
1
Components
Battery
7y 3m
In Queue
IA Executed
IA Phase
Signed Jan 2024
Queue → IA
4y 9m
IA → COD
3y 6m
Total Duration
4y 9m
Interconnection request submitted to ISO/RTO
ISO-NE is transitioning to cluster studies per FERC Order 2023.
Typical: 25–30 months (recent)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2027-07-26
The proposed Energy Storage project is a 170 MW battery energy storage system located in Norfolk County, Massachusetts. The project is in the ISO-NE interconnection queue as queue ID ISO-NE-877, with an interconnection queue entry date of April 11, 2019. The proposed commercial operation date is July 26, 2027, and the interconnection agreement has been executed.
The point of interconnection is National Grid's South Wrentham 115kV substation. The Energy Storage project has been the subject of recent news coverage, with four articles categorized as regulatory matters.
Generated from interconnection queue and public data sources
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.
See the full development-risk decomposition for this project.
State
MA
County
Norfolk
Grid Region
ISO New England
Market
ISO/RTO Member
Developer
—
Utility
—
Entity
ISO-NE
Service Type
ERIS
Point of Interconnection
National Grid's South Wrentham 115kV substation
Data Source
LBNL + Live
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ISO-NE
- Trading Hub
- .H.INTERNAL_HUB
- 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.
Last updated 2026-03-26
View all articlesForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
