BetaActiveBattery/StorageSPPLive · SPP
258 MW storage in Mill Creek, OK · In queue since January 2026
258 MW
Capacity
0
Components
2 months
In Queue
—
IA Status
Interconnection Timeline
Total Duration
2 months
Pre-Study0%
Queue EntryJan 26, 2026
Interconnection request submitted to ISO/RTO
DISIS Study
SPP uses the Definitive Interconnection System Impact Study (DISIS) cluster process.
Typical: 36–48 months (improving)
Interconnection Agreement
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Commercial Operation
Commercial operation date not yet determined
Project Details
State
OK
County
Mill Creek
Region
SPP
Developer
—
Utility
OGE
Entity
SPP
Point of Interconnection
Johnson County 345kV Substation
Data Source
Live · SPP
No news available for this project.