Deer Park Energy Center NGCC

Calpine, in partnership with Shell Catalysts & Technologies and Technip Energies, is developing a large-scale post-combustion carbon capture project at the Deer Park Energy Center, a natural gas combined cycle combined heat and power facility located in Deer Park, Texas. The project is designed to capture approximately 6.5 million tonnes per year of CO₂ at full buildout, targeting a 95 percent capture rate from flue gas using Shell’s CANSOLV Generation 2 amine-based solvent system. The project is supported by the U.S. Department of Energy under Award DE-FE-0032137 and is being engineered by Sargent & Lundy with technical contributions from Siemens, Toshiba, Black & Veatch, and the University of Houston. The capture system integrates with the existing combined heat and power configuration, leveraging available steam capacity to minimize power output derates while supplying compression and solvent regeneration energy. G The FEED study, completed in May 2023, confirmed the technical and commercial feasibility of capturing approximately 5.6 million tonnes of CO₂ per year in the initial configuration while achieving AACE Class 3 cost estimate maturity and full constructability planning. The total estimated capital cost for the full five-turbine configuration was approximately $2.38 billion in 2023 dollars, with an estimated capture cost of about $101 per tonne excluding federal tax credits. The study also evaluated a phased deployment option that reduces initial capital requirements to approximately $1.69 billion while preserving expansion capability, and concluded that combined heat and power integration significantly reduces efficiency penalties compared to conventional NGCC retrofits, supporting a construction-ready timeline targeting 2026.