The partner of the MFC4Sludge project, LEITAT Technology Center, participated in the seminar “Energy efficiency of wastewater treatment plants: sources of savings” carried out in Gdansk (Poland) during 5-7th of November. The seminar was organized by the Gdańska Fundacja Wody in the framework of the EU-7th Framework Program project “WaterDiss 2.0. Dissemination and uptake of FP water research results” (EBV.2010.5.1.0-1, N 265167). The seminar was dedicated to energy efficiency of wastewater treatment plants. Eduard Borràs, in representation of the MFC4Sludge consortium, gave a presentation of the objectives of the project and the significance it may have for the management of wastewater treatment plants.