SPP-GEN-2023-SR27
101.5 MW storage in Mayes, OK · In queue since July 2023 · Proposed COD June 2028
101.5 MW
Capacity
1
Components
Battery
3y 3m
In Queue
IA Pending
IA Phase
COD target: 2028
One connected view of the asset's ownership, operating or development evidence, grid context, commercial relationships, history, and forward outlook.
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Total Duration
4y 11m
Study Phase
Surplus; 04 SOUTHEAST
Interconnection request submitted to ISO/RTO
IA FULLY EXECUTED/ON SCHEDULE
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)
Proposed COD: 2028-06-01
SPP-GEN-2023-SR27 is a proposed battery energy storage development project located in Mayes County, Oklahoma, with a total capacity of 101.5 MW. The project consists of a single battery storage component and is listed within the Southwest Power Pool (SPP) region, with the Grand River Dam Authority (GRDA) identified as the associated utility. No developer is named in the available data. The proposed point of interconnection is the GRDA1 to CLARMR 5 161 kV transmission line.
The project entered the SPP interconnection queue on July 12, 2023, and remains in active status. It has requested Energy Resource Interconnection Service (ERIS) and is being evaluated in the "Surplus; 04 SOUTHEAST" study phase. The "Surplus" designation suggests the request may involve SPP's surplus interconnection service process, though the data does not confirm this. The project's interconnection agreement status is listed as pending, and its proposed commercial operation date is June 1, 2028.
Generated from interconnection queue and public data sources
Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.
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State
OK
County
Mayes
Grid Region
SPP (Southwest Power Pool)
Market
ISO/RTO Member
Developer
—
Utility
GRDA
Entity
SPP
Service Type
ERIS
Point of Interconnection
GRDA1 to CLARMR 5 161kV line
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. 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 — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.
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Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.
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- 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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