MISO-J3199
300 MW hybrid in Adair, MO · In queue since September 2022 · Proposed COD December 2026
300 MW
Capacity
1
Components
Solar
3y 8m
In Queue
Cluster Study
IA Status
COD target: 2026
Total Duration
4y 3m
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: 2026-12-22
MISO-J3199 is a proposed 300 MW hybrid solar and battery energy storage project in Adair County, Missouri. The project consists of 300 MW of solar generation. It is located within the Midcontinent Independent System Operator (MISO) region and is being developed for Ameren Illinois.
The project entered the MISO interconnection queue on September 15, 2022, with a proposed commercial operation date of December 22, 2026. Its interconnection status is currently in the Cluster Study phase. The point of interconnection is the Zachary 345kV substation.
Generated from interconnection queue and public data sources
State
MO
County
Adair
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
AMEREN ILLINOIS
Entity
MISO
Service Type
—
Point of Interconnection
Zachary 345kV
Data Source
LBNL + Live
- ISO / RTO
- MISO
- Trading Hub
- ILLINOIS.HUB
- Hub Confidence
- HIGH
- POI Substation
- Zachary 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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