Haskoning’s groundbreaking digestion technology, Ephyra®, has been introduced at Uisce Éireann's Ringsend Wastewater Treatment Plant (WWTP) in Dublin. The Ephyra® plant at Ringsend is the first retrofit of an existing THP plant anywhere in the world and is designed to significantly boost Dublin's sludge treatment capacity without requiring significant expansion of current facilities. This presentation shall focus on the drivers and objectives of the project, the benefits realised from Ephyra® in relation to THP digestion plants especially in relation to VS destruction and gas production, and the challenges faced by the project during commissioning. Initial data for VS destruction, gas production, and energy production shall be presented. The results shall show that operating digesters in Ephyra® plug flow provides significantly increased capacity and enhanced digester performance.