MISO-J2655
170 MW storage in Polk, IA · In queue since September 2022 · Proposed COD May 2026
170 MW
Capacity
1
Components
Battery
3y 8m
In Queue
Cluster Study
IA Status
COD target: 2026
Total Duration
3y 8m
Schedule
0 months past proposed COD
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: 2026-05-01
MISO-J2655 is a proposed 170 MW battery storage project located in Polk County, Iowa. The project, which consists entirely of battery storage, is being developed within the Midcontinent Independent System Operator (MISO) region. It entered the MISO interconnection queue on September 15, 2022, with a proposed commercial operation date of May 1, 2026. The project's interconnection status is currently in the Cluster Study phase.
The project is sponsored by MidAmerican Energy Co. and would interconnect at the Army Post 161 kV Substation. The project has appeared in recent news coverage regarding MidAmerican's renewable energy and storage development plans.
Generated from interconnection queue and public data sources
State
IA
County
Polk
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
MIDAMERICAN ENERGY CO.
Entity
MISO
Service Type
—
Point of Interconnection
Army Post 161 kV Substation
Data Source
LBNL + Live
- ISO / RTO
- MISO
- Trading Hub
- MINN.HUB
- Hub Confidence
- HIGH
- POI Substation
- Army Post 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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