ING Powers Groundbreaking 120 MW Alamo City Battery Storage Project to Boost San Antonio Grid Resilience
Alamo City BESS Set to Enhance Grid Reliability for 30,000 Homes
In a significant step for energy infrastructure in Texas, OCI Energy, CPS Energy, and supporting partners broke ground on the Alamo City Battery Energy Storage System (BESS) in southeastern Bexar County. The project will deliver 120 MW / 480 MWh of storage capacity—making it one of the region’s largest standalone battery initiatives and enabling the San Antonio grid to serve approximately 30,000 homes for up to four hours during peak demand.
ING's Construction Financing Supports Energy Transition
ING’s role as the project’s construction financier underlines its commitment to energy transition and grid modernization. According to Sven Wellock, Head of Renewables and Power, Americas at ING, “Battery storage plays a critical role in strengthening grid reliability during periods of peak demand, and we are pleased to support OCI Energy and CPS Energy in delivering a project that combines scale, flexibility, and long-term value for the community.”
Key Project Details: Scale, Control, and Partners
| Project Name | Capacity (MW/MWh) | Estimated Homes Served | Expected Operation | Key Partners | Project Role |
|---|---|---|---|---|---|
| Alamo City BESS | 120 MW / 480 MWh | ~30,000 (for 4 hours) | 2027 | OCI Energy, CPS Energy, ING, LG Energy Solution Vertech, Elgin Power Solutions | Developer: OCI Energy; Operator: CPS Energy; Financing: ING; Storage Tech: LG Energy; EPC: Elgin Power Solutions |
Strategic Benefits: Flexible Power and Long-Term Resilience
This project targets critical needs for flexibility and resilience. The ability to shift electricity supply during peak usage not only supports San Antonio’s rapidly growing population but also helps integrate diverse renewable sources and reduce grid stress. OCI Energy retains project ownership, with CPS Energy taking on operational control under a long-term storage capacity agreement to maximize local energy resilience.
Collaboration Signals Growing Private Investment in Grid Modernization
The Alamo City BESS exemplifies how cross-sector collaboration can accelerate progress on resilient, forward-looking energy assets:
- ING: Providing construction financing and sector expertise.
- LG Energy Solution Vertech: Supplying advanced battery storage technology.
- Elgin Power Solutions: Serving as Engineering, Procurement, and Construction (EPC) contractor.
- OCI Energy and CPS Energy: Steering project development, funding, and operations to align with community power needs.
Takeaway: Grid Storage Investments Rise as Demand Grows
With completion expected in 2027, Alamo City BESS is poised to become a cornerstone of San Antonio’s strategy to balance supply, ease peak constraints, and respond to surging demand. The project’s partnerships reinforce the growing role of institutional investors and sector leaders in building out infrastructure that supports both community needs and the broader energy transition.
At-a-Glance: Alamo City BESS Stakeholders
| Organization | Project Role | Notable Contribution |
|---|---|---|
| OCI Energy | Developer / Long-term Owner | Development, financing, asset management |
| CPS Energy | Operator | Operational control and local service |
| ING | Construction Financing | Sector expertise, financial backing |
| LG Energy Solution Vertech | Technology Provider | Battery storage technology |
| Elgin Power Solutions | EPC Contractor | Engineering, procurement, and construction |
As battery storage becomes ever more integral to the grid, ING’s involvement in projects like Alamo City BESS signals both confidence in energy storage’s future and a pragmatic approach to building energy systems that are resilient, sustainable, and ready for tomorrow’s challenges.
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