To address the emerging and future challenges in the field of energy as well as to meet the expectations of the Council of the European Union (EU), and consequently of the EU Ministries of Defence (MoDs), the Consultation Forum for Sustainable Energy in the Defence and Security Sector (CF SEDSS) will continue pursuing in Phase III the implementation of the EU legal framework on energy and will reaffirm the Consultation Forum as an appropriate vehicle for sharing information and best practices on improving energy management, energy efficiency, the use of renewable energy by the defence sector as well increasing the protection and resilience of defence energy-related critical energy infrastructures. Building on the achievements of the previous phases (CF SEDSS phase I and II), the European Defence Agency (EDA) with the support of the European Commission (Directorate General Energy -DG ENER and Executive Agency for Small and Medium-sized Enterprises - EASME), looks forward to continuing assisting the MoDs to move towards more affordable, greener, sustainable and secure energy models. In this context, Phase III will contribute in preparing the defence sector to welcome and accommodate new trends in technology and to address challenges ranging from technical and human factors to hybrid threats and other risks. Overall, Phase III is expected to present the defence and security sectors with an economic, operational, and strategic opportunity to reduce reliance on fossil fuel and natural gas, to progressively minimise energy costs and carbon footprint and to enhance the operational effectiveness and energy resilience of their functions.