Alamo City BESS
128.2 MW storage in Bexar, TX · In queue since February 2024 · Proposed COD September 2027
128.2 MW
Capacity
1
Components
Battery
2y 5m
In Queue
IA Executed
IA Phase
Signed May 2025
Queue → IA
1y 3m
IA → COD
2y 4m
Total Duration
1y 3m
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: 2027-09-21
The Alamo City BESS project is a proposed 128.12 MW battery storage project located in Bexar County, Texas. Developed by ALAMO CITY ESS LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0330, with a queue entry date of February 27, 2024. The proposed commercial operation date is September 21, 2027, and the project's interconnection agreement status is currently in the Facility Study phase.
The proposed project consists of 128.12 MW of battery storage capacity. The point of interconnection is Tap 138kV 5294 Martinez - 5110 JT Deely. The Alamo City BESS project has been mentioned in recent news coverage related to the energy industry.
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
Bexar
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
ALAMO CITY ESS LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 5294 Martinez - 5110 JT Deely
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_SOUTH
- Hub Confidence
- MEDIUM
- POI Substation
- Martinez 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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Ask about Alamo City BESSForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
