Comparing the concept of Nearly Zero-Energy Buildings between EU countries in terms of required renewable energy share

Transforming the energy sector to reduce carbon emissions is key to meeting future climate and energy goals. Buildings are a major consumer of primary energy worldwide, accounting for about 40% of total energy consumption. Under the Energy Efficiency in Buildings Directive issued by the European Commission, Near Zero Energy Buildings will become mandatory for all new construction in Europe from 2021. Under the Near Zero Energy Buildings concept, a minimum amount of the primary energy required is supplied by renewable energy sources available locally or nearby. This strategy not only reduces dependency on conventional energy sources, but also contributes to reducing carbon dioxide emissions, thus aligning with long-term sustainability goals. This report provides an overview of the implementation of national definitions and energy performance standards for new and existing residential buildings in the Member States. It also analyzes discrepancies with the reference levels and renewable energy requirements set by each country to comply with the standards. The report includes quantitative data on the uptake of Nearly Zero Energy Buildings requirements in Member States.