The building sector holds a relevant position in decreasing greenhouse gas (GHG) emissions within the European Union (EU). The revised Energy Performance of Buildings Directive (EPBD) recently adopted, sets forth ambitious goals to make the EU building stock carbon-neutral by 2050. As Nearly Zero-Energy Buildings (NZEBs) remain the mandatory target for new buildings from 2021 to 2030, this report provides a comprehensive assessment of Member States progress towards the implementation of NZEBs. It depicts the uptake of definitions, providing NZEB primary energy demand (total and non-renewable) across Member States, distinguishing new and existing, residential and non-residential buildings and envelope thermal transmittances thresholds. A focus is given to renewable energy role, including renewable energy share and accounted renewable energy technologies and overview of common building technologies is included. The report compares the national NZEB performance levels with the recommended benchmarks as well as with the latest cost-optimal energy performance levels. Moreover, information regarding the typical measures, number and floor area of NZEBs from the 2020 Long-Term Renovation Strategies (LTRS), 2023 draft National Energy and Climate Plans (NECPs) and 2023 Progress Reports (NECPR) are collected and discussed. As the revised EPBD further introduces Zero-Emission Buildings (ZEBs) as the objective for all new buildings starting in 2030, this report also explores how ZEB performance levels might evolve based starting with current NZEB definitions.