SPP-GEN-2021-047
250 MW generation in Mayes, OK · In queue since April 2021 · Proposed COD December 2028
250 MW
Capacity
1
Components
Solar
5y 6m
In Queue
IA Executed
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
7y 8m
Study Phase
DISIS-2021-001; 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: 12–24 months
Proposed COD: 2028-12-01
SPP-GEN-2021-047 is a proposed 250 MW solar generation project located in Mayes County, Oklahoma. The development project is listed in the interconnection queue of the Southwest Power Pool (SPP), with the Grand River Dam Authority (GRDA) identified as the associated utility. No developer name has been disclosed in the available queue data. The project consists of a single solar component with a capacity of 250 MW.
The project entered the SPP queue on April 29, 2021, and remains in active status. It was studied as part of the DISIS-2021-001 definitive interconnection system impact study cluster, within the 04 Southeast study area. An interconnection agreement has been executed, and the project has requested Energy Resource Interconnection Service (ERIS). The proposed point of interconnection is on the 345 kV transmission line between the Tulsa substation (Bus #509852) and the Igloo substation (Bus #513596). The proposed commercial operation date is December 1, 2028.
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
Mayes
Grid Region
SPP (Southwest Power Pool)
Market
ISO/RTO Member
Developer
—
Utility
GRDA
Entity
SPP
Service Type
ERIS
Point of Interconnection
Tulsa (Bus #509852) - Igloo (Bus #513596) 345kV line
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
- 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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