SPP-GEN-2026-SR8
500 MW storage in Elgin, OK · In queue since February 2026
500 MW
Capacity
0
Components
3 months
In Queue
—
IA Status
Total Duration
3 months
Interconnection request submitted to ISO/RTO
SPP uses the Definitive Interconnection System Impact Study (DISIS) cluster process.
Typical: 36–48 months (improving)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Commercial operation date not yet determined
SPP-GEN-2026-SR8 is a proposed 500 MW battery storage project located in Elgin, Oklahoma. The project is listed in the Southwest Power Pool (SPP) interconnection queue, having entered the queue on February 5, 2026. American Electric Power (AEP) is the utility associated with the project, which is slated to connect to the Cimmarron to Lawton 345 kV Line.
The project's service type is listed as Network Resource (NR). As of the latest data, the project's status is "active" in the SPP queue.
Generated from interconnection queue and public data sources
State
OK
County
Elgin
Grid Region
SPP (Southwest Power Pool)
Market
ISO/RTO Member
Developer
—
Utility
AEP
Entity
SPP
Service Type
NR
Point of Interconnection
Cimmarron to Lawton 345 kV Line
Data Source
Live · SPP
- ISO / RTO
- SPP
- Trading Hub
- SPP South 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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