Training Activities by Retrofit HUB Energy Efficient Renovations in Practice Training Series Energy Renovation of Multifamily Buildings – Obstacles, Solutions and Opportunities OUR-CEE – Overcoming Underperforming Renovations in CEE RenovAID – Buildings Renovation RenewStart for Hydrogen Technologies Integrated Approach to Methane Emissions Abatement Instytut Energetyki / Institute of Power Engineering COMMENCE – Community Energy in Central Europe Strengthening Ownership of Climate Policy in Central and Eastern Europe (CEE)