Calumet - Burnham 345 kV
500 MW storage in Cook, IL · In queue since April 2026 · Proposed COD December 2030
500 MW
Capacity
0
Components
6 months
In Queue
—
IA Status
COD target: 2030
One connected view of the asset's ownership, operating or development evidence, grid context, commercial relationships, history, and forward outlook.
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Total Duration
4y 8m
Study Phase
C01
Interconnection request submitted to ISO/RTO
PJM processes interconnection requests through multi-phase System Impact Studies (SIS).
Typical: ~48 months (historically longest)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2030-12-31
Calumet - Burnham 345 kV (queue ID PJM-C01-1355) is a proposed 500 MW battery energy storage development project located in Cook County, Illinois. The project is being developed by Big Shoulders Storage LLC and is designed to connect to the transmission system at the Calumet - Burnham 345 kV point of interconnection. ComEd is the transmission utility. The project is a standalone storage facility and has no hybrid generation components.
The project is listed as active in the interconnection queue administered by PJM Interconnection. It entered the queue on April 27, 2026, under a Generation Interconnection service request. It is being evaluated in PJM's Cycle 01 (C01) study phase, and the provided data does not indicate that an interconnection agreement has been executed. The developer has proposed a commercial operation date of December 31, 2030.
Generated from interconnection queue and public data sources
Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
IL
County
Cook
Grid Region
PJM Interconnection
Market
ISO/RTO Member
Developer
Big Shoulders Storage LLC
Utility
ComEd
Entity
PJM
Service Type
Generation Interconnection
Point of Interconnection
Calumet - Burnham 345 kV
Data Source
live-pjm_cycle
Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. 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 — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. 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. The bankability view that determines whether the deal clears its covenants once online. 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
- 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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Ask about Calumet - Burnham 345 kVForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
