MISO-S1100
200 MW storage in Mississippi, AR · In queue since June 2025
200 MW
Capacity
0
Components
11 months
In Queue
—
IA Status
Total Duration
11 months
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)
Commercial operation date not yet determined
MISO-S1100 is a proposed 200 MW battery storage project located in Mississippi County, Arkansas. The project is in the Midcontinent Independent System Operator (MISO) interconnection queue, having entered the queue on June 18, 2025. Entergy Arkansas, LLC is the utility associated with the project.
The project's point of interconnection (POI) is at the Blytheville I-55 substation, specifically the AECC Blytheville North 161.0kV connection. The project's interconnection service type is a System Impact Study (SIS). The project is currently listed as active in the MISO queue.
Generated from interconnection queue and public data sources
State
AR
County
Mississippi
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
ENTERGY ARKANSAS, LLC
Entity
MISO
Service Type
SIS
Point of Interconnection
BLYTHEVILLE I-55 - AECC BLYTHEVILLE NORTH 161.0kV
Data Source
Live · MISO
- ISO / RTO
- MISO
- Trading Hub
- ARKANSAS.HUB
- Hub Confidence
- MEDIUM
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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