SPP-GEN-2017-221
152 MW storage in Sedgwick, KS · In queue since November 2017 · Proposed COD December 2026
152 MW
Capacity
1
Components
Battery
8y 11m
In Queue
IA Executed
IA Phase
COD target: 2026
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Total Duration
9y 1m
Study Phase
DISIS-2017-002; 03 CENTRAL
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: 2026-12-31
SPP-GEN-2017-221 is a proposed 152 MW battery energy storage project located in Sedgwick County, Kansas. The standalone storage project consists of a single battery component rated at 152 MW. It would interconnect at the Buffalo Flats 345kV Substation within the transmission area of WERE. The project requests both Network Resource Interconnection Service (NRIS) and Energy Resource Interconnection Service (ERIS).
The project is in the Southwest Power Pool (SPP) interconnection queue, which it entered on November 30, 2017. It was studied as part of the DISIS-2017-002 Definitive Interconnection System Impact Study cluster in the 03 Central study area. As of the latest available data, the project holds an active status, and its interconnection agreement (IA) has been executed. The proposed commercial operation date is December 31, 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
KS
County
Sedgwick
Grid Region
SPP (Southwest Power Pool)
Market
ISO/RTO Member
Developer
—
Utility
WERE
Entity
SPP
Service Type
NRIS/ERIS
Point of Interconnection
Buffalo Flats 345kV 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 North Hub
- Hub Confidence
- HIGH
- POI Substation
- Buffalo Flats 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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