Peregrine Energy Solutions LLC has announced the start of construction on the Mallard Energy Storage project, located about 30 miles northeast of Dallas. With a capacity of 250 MW / 500 MWh, the installation marks a strategic step in the company’s rapid expansion in the large-scale storage market across the Electric Reliability Council of Texas (ERCOT), the independent system operator managing the Texas electric grid.
A structured industrial partnership
The project is being executed through a three-party collaboration between Peregrine, Finnish technology provider Wärtsilä Corporation, and WHC Energy Services LLC, which is handling the engineering, procurement, and construction (EPC) contract. Mallard Energy Storage is Peregrine’s second large-scale deployment using Wärtsilä’s Quantum2 platform, following the ongoing 150 MW / 300 MWh Wizard project in League City.
The infrastructure is backed by a tolling agreement with an unnamed Fortune 500 company, ensuring long-term engagement and an economic model based on monetising storage capacity to respond to grid variability.
An asset supporting ERCOT grid reliability
The Mallard storage system aims to strengthen ERCOT’s stability by offering fast response to load fluctuations, integrating intermittent renewable flows, and providing key ancillary services. The installation will play a key role in regional efforts to secure energy supply without relying solely on thermal generation.
The company stated that the project is part of a broader strategy to deploy high-performance storage assets designed to support the transformation of Texas’s energy mix. The involvement of industrial players with proven track records in utility services and engineering strengthens the operational credibility of the initiative.
Secure and scalable execution framework
WHC Energy Services, responsible for on-site execution, brings proven expertise in delivering complex energy infrastructure. Company officials highlighted the safety standards and engineering methods adapted to the specific requirements of utility-scale battery storage.
Wärtsilä’s Quantum2 technology features a modular architecture designed to optimise energy density and facilitate operational maintenance. Already deployed in other large-scale projects, the system is built to ensure high reliability in the varied climate conditions of the southern United States.
