Surplus; J500 (MISO-S1111) — Project Summary

Queue ID
MISO-S1111
Capacity
263 MW
Technology
Gas
Status
active
Location
Adair, IA
Region
MISO
Developer
IA Status

Surplus; J500

MISO-S1111BetaActiveGasOtherMISOLBNL + Live

263 MW hybrid in Adair, IA · In queue since July 2025 · Proposed COD September 2027

BA: MISOISO/RTO: MISONERC: MRORC: MISO

263 MW

Capacity

1

Components

Gas

10 months

In Queue

IA Status

COD target: 2027

Interconnection

Total Duration

2y 2m

Pre-Study0%
Queue EntryJul 31, 2025

Interconnection request submitted to ISO/RTO

DPP Study

MISO uses the Definitive Planning Phase (DPP) process with 3 study phases.

Typical: 30–40 months (historical); 12 months target

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2027-09-01

About

The proposed MISO-S1111 project is a 263 MW hybrid generation project located in Adair County, Iowa. The project, which is listed in the Midcontinent Independent System Operator (MISO) interconnection queue, is being developed by MidAmerican Energy Co. It entered the queue on July 31, 2025.

The project's interconnection status is active, and it is undergoing a System Impact Study (SIS). The technology is listed as "Other" with a detail of "Hybrid", but further component details are not available.

Generated from interconnection queue and public data sources

Development Risk

Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Withdrawal probability vs cohort
IA cluster risk
Project Details

State

IA

County

Adair

Grid Region

MISO (Midcontinent)

Market

ISO/RTO Member

Developer

Utility

MIDAMERICAN ENERGY CO.

Entity

MISO

Service Type

Point of Interconnection

ORIENT

Data Source

LBNL + Live

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.

Available on the InfraSure platform

See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Generation Forecast

Forward generation outlook — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

P50 conditioned on COD
Capacity factor vs cohort
Weather + policy scenarios
Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

Revenue conditioned on COD
Financing close risk
Cohort DSCR comparison
Market Context
Approximate
ISO / RTO
MISO
Trading Hub
MINN.HUB
Hub Confidence
HIGH
Nearest Node (Estimated)
MEC.ORIENT1
POI Substation
Orient Wind Farm

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 news available for this project.

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InfraSure platform

Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.