MISO-J3031
200 MW storage in Jefferson, IL · In queue since September 2022 · Proposed COD October 2026
200 MW
Capacity
1
Components
Battery
3y 8m
In Queue
Cluster Study
IA Status
COD target: 2026
Total Duration
4y 1m
Interconnection request submitted to ISO/RTO
MISO uses the Definitive Planning Phase (DPP) process with 3 study phases.
Typical: 30–40 months (historical); 12 months target
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2026-10-31
MISO-J3031 is a proposed 200 MW battery storage project located in Jefferson County, Illinois. The project, which interconnects to Ameren Illinois via the 4WLTNVL TP 138 kV point of interconnection, entered the MISO interconnection queue on September 14, 2022. Its proposed commercial operation date is October 31, 2026. The project's interconnection status is currently in the Cluster Study phase.
The development project consists solely of battery storage, with a total capacity of 200 MW. It is listed as an active project within the MISO queue.
Generated from interconnection queue and public data sources
State
IL
County
Jefferson
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
AMEREN ILLINOIS
Entity
MISO
Service Type
—
Point of Interconnection
4WLTNVL TP 138 kV
Data Source
LBNL + Live
- ISO / RTO
- MISO
- Trading Hub
- 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.
No ask pi reports yet for this entity.
ask pi about Project MISO-J3031
