Bowstring BESS
155 MW storage in San Patricio, TX · In queue since November 2020 · Proposed COD September 2028
155 MW
Capacity
1
Components
Battery
5y 8m
In Queue
IA Executed
IA Phase
Signed Sep 2025
Queue → IA
4y 10m
IA → COD
3 years
Total Duration
4y 10m
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2028-09-18
The Bowstring BESS project is a proposed 155 MW battery storage project located in San Patricio County, Texas. Developed by Longbow Energy Storage, LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-22INR0443, with a queue entry date of November 18, 2020. The proposed commercial operation date is September 18, 2028, and the project's interconnection agreement status is currently in the Facility Study phase.
The Bowstring BESS project appeared in recent news coverage regarding energy storage development in Texas. The point of interconnection is the 8961 White Point 138kV.
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.
See the full development-risk decomposition for this project.
State
TX
County
San Patricio
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Longbow Energy Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8961 White Point 138kV
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
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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Ask about Bowstring BESSForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
