VandCenter Syd (VCS) in Denmark is continuing to optimize energy recovery at the Ejby Mølle Water Resource Recovery Facility (EMWRRF), a site already recognized for its net-energy positive status. As part of these efforts, VCS is implementing the world's first full-scale MHP. This innovative technology, developed by Jacobs, leverages Caldicellulosiruptor bescii, a hyper-thermophilic bacterium, to enhance anaerobic digestion performance and increase biogas production. Lab and pilot-scale results consistently show MHP increasing volatile solids reduction to over 75%, and is expected to a projected 30% or greater increase in biogas production and a substantial reduction in biosolids volume. This presentation will discuss the final design and business case for full-scale MHP at EMWRRF, including innovative methods for efficient heat recovery through vacuum evaporative cooling, developed in collaboration with CAMBI, and how lessons learned work by VCS will be applied to the first UK installation of MHP led by United Utilities in the Ofwat-funded Next Generation Digestion Project.