MISO-J1229
50 MW storage in Muscatine, IA · In queue since April 2019 · Proposed COD October 2023
50 MW
Capacity
1
Components
Battery
7y 6m
In Queue
IA Executed
IA Phase
Signed Jan 2023
One connected view of the asset's ownership, operating or development evidence, grid context, commercial relationships, history, and forward outlook.
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Queue → IA
3y 9m
IA → COD
9 months
Total Duration
3y 9m
Schedule
36 months past proposed COD
Study Phase
DPP-2019 West
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Done; post-GIA Not Started; GIA
Project under construction
Typical: 6–18 months
Proposed COD: 2023-10-30
MISO-J1229 is a proposed 50 MW battery energy storage project located in Muscatine County, Iowa. The standalone storage development is planned to interconnect at the Sub 92 345 kV Substation within the service territory of MidAmerican Energy Company. No developer or project name has been publicly identified in the interconnection queue data.
The project is listed as active in the Midcontinent Independent System Operator (MISO) interconnection queue, which it entered on April 29, 2019. It was studied as part of the DPP-2019 West study phase and requested Network Resource Interconnection Service (NRIS). An interconnection agreement was executed on January 26, 2023, and the project's proposed commercial operation date was October 30, 2023.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
IA
County
Muscatine
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
MIDAMERICAN ENERGY COMPANY
Entity
MISO
Service Type
NRIS
Point of Interconnection
Sub 92 345 kV Substation
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
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Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. 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. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- MISO
- Trading Hub
- MINN.HUB
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- AMIL.WLBRWEST
- POI Substation
- Sub 92
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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