SPP-GEN-2023-SR5
85 MW storage in Dewey, OK · In queue since December 2022 · Proposed COD June 2026
85 MW
Capacity
1
Components
Battery
3y 10m
In Queue
IA Executed
IA Phase
COD target: 2026
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Total Duration
3y 6m
Schedule
5 months past proposed COD
Study Phase
Surplus; 04 SOUTHEAST
Interconnection request submitted to ISO/RTO
SPP uses the Definitive Interconnection System Impact Study (DISIS) cluster process.
Typical: 36–48 months (improving)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
IA FULLY EXECUTED/ON SCHEDULE
Project under construction
Typical: 6–18 months
Proposed COD: 2026-06-01
SPP-GEN-2023-SR5 is a proposed 85 MW battery energy storage development project located in Dewey County, Oklahoma. The project consists of a single battery storage component with a capacity of 85 MW. No developer has been publicly identified in the interconnection data. The project is planned to connect to the grid at the Tatonga 345 kV Substation, within the service territory of OG&E (Oklahoma Gas and Electric).
The project is in the interconnection queue of the Southwest Power Pool (SPP), which it entered on December 15, 2022. It is currently listed as active and is being processed through SPP's surplus interconnection service track under the "04 Southeast" study grouping. The project has requested Energy Resource Interconnection Service (ERIS) and has an executed interconnection agreement (IA). Its proposed commercial operation date is June 1, 2026.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
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State
OK
County
Dewey
Grid Region
SPP (Southwest Power Pool)
Market
ISO/RTO Member
Developer
—
Utility
OGE
Entity
SPP
Service Type
ERIS
Point of Interconnection
Tatonga 345 kV Substation
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
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Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
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- ISO / RTO
- SPP
- Trading Hub
- SPP South Hub
- Hub Confidence
- HIGH
- POI Substation
- Tatonga 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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