Senator Aggreko Storage
153.1 MW generation in Maverick, TX · In queue since November 2023 · Proposed COD March 2029
153.1 MW
Capacity
1
Components
Battery
2y 8m
In Queue
Facility Study
IA Phase
Signed Dec 2025
Queue → IA
2y 1m
IA → COD
3y 3m
Total Duration
2y 1m
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: 18–30 months
Proposed COD: 2029-03-31
- 2026-03·Senator Aggreko Storage LLC (original developer)→Bimergen Energy Corporationsource
ERCOT Standard Generation Interconnection Agreement filings with LCRA and Oncor for Senator Aggreko Storage LLC
sourceBimergen Energy Corporation acquires eight late-stage battery storage projects in Texas including Senator Aggreko Storage
sourceERCOT capacity chart lists Senator Aggreko Storage 153.1 MW battery with 2029 target COD
sourceThe Senator Aggreko Storage project is a proposed 153.1 MW battery storage project located in Maverick County, Texas. The project, developed by Senator Aggreko Storage LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0312, with a queue entry date of November 14, 2023. The proposed commercial operation date is March 31, 2029.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the 138 kV Rosita Creek Substation (#78015).
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.
See the full development-risk decomposition for this project.
State
TX
County
Maverick
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Senator Aggreko Storage LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
138 kV Sunglow Substation (#78016)
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- FTDUNCAN_RN
- POI Substation
- Rosita Creek 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.
No Ask reports yet for this entity.
Ask about Senator Aggreko StorageForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
