The Jaguar Energy Storage project was built near Waco, Texas and marked substantially complete in October 2025. Mortenson was the engineering, procurement, and construction (EPC) contractor for the project, responsible for the Balance of Plant (BOP) and Energy Management System (EMS) scopes.
Mortenson’s scope of work included two co-located energy storage projects totaling 300 megawatts and 600 megawatt hours, two 345kV substations, and self-performed civil site work.
For the energy storage scope, each project consisted of 46 Power Electronics inverters rated at 4200KVA, with each PCS supplied by two Hithium BESS containers rated at 4.179MWh each. Mortenson primarily self-performed the energy storage work.
The power scope of the project consisted of two 345kV / 34.5kV substations with Foundation, Steel, Physical Electrical, P&C, and SCADA designed by Mortenson Engineering Services (MES).
Substation 1 was built to support the completed energy storage project and contained two main power transformers procured by Mortenson. Substation 2 was designed and built to support future solar infrastructure.
The medium voltage collection system operated at 34.5kV, and the main power transformers in the substations stepped the voltage up to 345kV for transmission.
Execution of the substation build was self-performed by Mortenson and ran concurrently to the build of the energy storage yard.
- Completion Date
October 2025
- Delivery Method
-
Engineer, Procure and Construct
- Additional Project Facts
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300MW / 600MWh Energy Storage
(2) 345kV Substations
