MISO-J2556
300 MW generation in Whiteside, IL · In queue since September 2022 · Proposed COD June 2026
300 MW
Capacity
1
Components
Solar
3y 8m
In Queue
Cluster Study
IA Status
COD target: 2026
Total Duration
3y 9m
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: 2026-06-18
MISO-J2556 is a proposed solar generation project located in Whiteside County, Illinois, within the Midcontinent Independent System Operator (MISO) region. The development project, with a total capacity of 300 MW, is being pursued by MidAmerican Energy Co. It consists entirely of solar photovoltaic (PV) technology.
The project entered the MISO interconnection queue on September 14, 2022, and has a proposed commercial operation date of June 18, 2026. Its interconnection status is currently in the Cluster Study phase, and the point of interconnection (POI) is the Cordova to Sub 39 345kV line. The project is listed as active in the interconnection queue.
Generated from interconnection queue and public data sources
State
IL
County
Whiteside
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
MIDAMERICAN ENERGY CO.
Entity
MISO
Service Type
—
Point of Interconnection
Cordova to Sub 39 345kV line
Data Source
LBNL + Live
- ISO / RTO
- MISO
- Trading Hub
- ILLINOIS.HUB
- Hub Confidence
- HIGH
- POI Substation
- Sub 39
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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