Hecate Energy Eastern Ave Energy Center
250 MW storage in Suffolk, MA · In queue since April 2021 · Proposed COD November 2026
250 MW
Capacity
1
Components
Battery
5y 3m
In Queue
IA Executed
IA Phase
Signed Sep 2023
Queue → IA
2y 5m
IA → COD
3y 2m
Total Duration
2y 5m
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: 2026-11-09
1.2 GWh CATL battery project progressing through Haverhill Conservation Committee permitting
sourceThe Hecate Energy Eastern Ave Energy Center is a proposed 250 MW battery storage project located in Suffolk County, Massachusetts. The project consists of a single 250 MW battery component.
The project is listed in the ISO-NE interconnection queue as queue ID 1115, with an entry date of April 8, 2021, and a proposed commercial operation date of November 9, 2026. Its interconnection agreement has been executed. The point of interconnection is the Sta 488 Chelsea 115 kV substation. The project has been mentioned in recent news coverage.
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
Suffolk
Grid Region
ISO New England
Market
ISO/RTO Member
Developer
—
Utility
—
Entity
ISO-NE
Service Type
NRIS
Point of Interconnection
Sta 488 Chelsea 115 kV 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.
