Twin Groves Storage I
50 MW storage in Mclean, IL · In queue since March 2020 · Proposed COD January 2028
50 MW
Capacity
1
Components
Battery
6y 4m
In Queue
IA Executed
IA Phase
COD target: 2028
Total Duration
7y 10m
Interconnection request submitted to ISO/RTO
PJM processes interconnection requests through multi-phase System Impact Studies (SIS).
Typical: ~48 months (historically longest)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2028-01-28
Twin Groves Storage I is a proposed 50 MW battery storage project located in McLean County, Illinois. The project is in the PJM interconnection queue as entry PJM-AF2-252, with a queue entry date of March 27, 2020, and a proposed commercial operation date of January 28, 2028. The interconnection agreement for the project has been executed. The point of interconnection is the Blue Mound 345 kV substation.
The Twin Groves Storage I project has been the subject of 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
IL
County
Mclean
Grid Region
PJM Interconnection
Market
ISO/RTO Member
Developer
—
Utility
ComEd
Entity
PJM
Service Type
NRIS
Point of Interconnection
Blue Mound 345 kV
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
- PJM
- Trading Hub
- N ILLINOIS HUB
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- 989 TWIN34.5 KV HTRAILWF
- POI Substation
- Blue Mound 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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Ask about Twin Groves Storage IForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
