MISO-S1105
300 MW storage in Lonoke, AR · In queue since June 2025
300 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-S1105 is a proposed 300 MW battery storage project located in Lonoke County, Arkansas. The project is being developed within the Entergy Arkansas service area and has requested a System Impact Study (SIS). It entered the Midcontinent Independent System Operator (MISO) interconnection queue on June 24, 2025.
The project, listed as an active project in the MISO queue, is planned to connect to the grid at the KEO EHV point of interconnection.
Generated from interconnection queue and public data sources
State
AR
County
Lonoke
Grid Region
MISO (Midcontinent)
Market
ISO/RTO Member
Developer
—
Utility
ENTERGY ARKANSAS, LLC
Entity
MISO
Service Type
SIS
Point of Interconnection
KEO EHV
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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