ZEBRA2020 project focuses on tracking the market transition to nearly Zero-Energy Buildings (nZEBs) and develops recommendations and strategies for the building industry and policy makers and to accelerate the market uptake of nZEBs. The project will offer on-line tools, such as ZEBRA2020 data tool and nZEB tracker. ZEBRA2020 data tool presents an overview of the current building stock including renovation and construction and monitors Energy Performance Certificates (EPC) activities by country. nZEB tracker will measure the maturity of the nZEB market.