MISO-J1891
200 MW hybrid in Attala, MS · In queue since August 2021 · Proposed COD October 2024
200 MW
Capacity
1
Components
Solar
5y 2m
In Queue
IA Pending
IA Phase
Signed Dec 2025
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
4y 4m
Total Duration
4y 4m
Schedule
24 months past proposed COD
Study Phase
DPP-2021 South
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; Phase 3
Project under construction
Typical: 18–30 months
Proposed COD: 2024-10-31
MISO-J1891 is a proposed solar and battery storage hybrid development project located in Attala County, Mississippi. The project has a total capacity of 200 MW, with the solar component listed at 200 MW. A separate capacity figure for the battery component is not specified. The project would interconnect at the 230 kV McAdams Substation within the service territory of Entergy Mississippi, LLC. It has requested Network Resource Interconnection Service (NRIS).
The project entered the Midcontinent Independent System Operator (MISO) interconnection queue on August 19, 2021. It is being evaluated in the DPP-2021 South study phase. Its queue status is active, and its interconnection agreement (IA) is listed as pending, with an associated IA date of December 5, 2025. The proposed commercial operation date is October 31, 2024, a date that precedes the pending IA milestone. No developer has been publicly identified in the queue data.
Generated from interconnection queue and public data sources
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.
See the full development-risk decomposition for this project.
State
MS
County
Attala
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
ENTERGY MISSISSIPPI, LLC.
Entity
MISO
Service Type
NRIS
Point of Interconnection
230 kV McAdams Substation
Data Source
LBNL + Live
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- MISO
- Trading Hub
- LOUISIANA.HUB
- Hub Confidence
- HIGH
- POI Substation
- McAdams 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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Ask about Project MISO-J1891Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
