Project Overview
Mortenson served as the engineering, procurement, and construction (EPC) contractor for the DeCordova Energy Storage Facility in Granbury, Texas, delivering critical energy storage infrastructure for the Texas power grid. The project included a 260 MW/260 MWh battery energy storage system, a new 138 kV substation, integration with the existing plant substation, and full energy management system integration.
Customer Impact
The DeCordova Energy Storage Facility was developed to store electricity during periods of lower demand and deliver power back to the grid during periods of higher demand. Mortenson provided the infrastructure required to support these operations, including battery storage systems, grid interconnection infrastructure, and energy management system integration.
The completed facility can store enough energy to power approximately 130,000 average Texas residences.
Key Takeaways:
- Delivered a 260 MW/260 MWh battery energy storage facility.
- Installed more than 22,000 lithium iron phosphate (LFP) batteries housed within 86 enclosures.
- Constructed a new 138kV substation and interconnected it with the existing plant substation.
- Integrated the facility's energy management system.
- Co-located the project with the Luminant DeCordova gas power plant.
- At energization, the facility was the largest energy storage project in Texas.
- Capable of storing enough energy to power approximately 130,000 average Texas residences.
- Delivery Method
-
Engineer, Procure, Construct
- Additional Project Facts
-
Vistra
Sungrow
260MW / 260MWh
Standalone Energy Storage
Complete
Supporting Large-Scale Energy Storage Operations
Mortenson was selected as the EPC contractor for the DeCordova Energy Storage Facility, a utility-scale battery energy storage project in Granbury, Texas. At energization, the facility was the largest energy storage project in Texas and represented one of seven renewable energy projects within the Vistra Zero portfolio.
Delivering Energy Storage and Grid Interconnection Infrastructure
The facility consists of 260 MW/260 MWh of battery energy storage utilizing lithium iron phosphate (LFP) technology. Mortenson installed more than 22,000 batteries housed within 86 enclosures and completed integration of the facility's energy management system.
The project also included construction of a new 138kV substation and interconnection with the existing plant substation, providing the infrastructure necessary to store and deliver energy through the electric grid.
