The overall goal of this project is to bring Membrane Technology and Research, Inc.’s (MTR) innovative membrane-based post-combustion carbon dioxide (CO2) capture process to the final pre-commercial stage of development. The recipient’s plan in this three-phase project is to design, build, and operate a 140 tonne-per-day (TPD) large pilot capture system at the host site for the project, the Wyoming Integrated Test Center (WITC) in Gillette, Wyoming. The membrane large pilot will be designed to achieve ∼70% CO2 capture from a 10 megawatt electricity (MWe) equivalent slipstream of flue gas. This range of partial capture using membranes offers the lowest cost of capture ($/tonne CO2). Completion of all phases of this project will signify that the MTR membrane capture process is ready to proceed to the demonstration scale.