Towards Nearly Zero Energy Buildings in Europe: A Focus on Retrofit in Non-Residential Buildings

Buildings are the focus of European (EU) policies aimed at a sustainable and competitive low-carbon economy by 2020. Reducing energy consumption of existing buildings and achieving nearly zero energy buildings (NZEBs) are the core of the Energy Efficiency Directive (EED) and the recast of the Energy Performance of Building Directive (EPBD). To comply with these requirements, Member States have to adopt actions to exploit energy savings from the building sector. This paper describes the differences between deep, major and NZEB renovation and then it provides an overview of best practice policies and measures to target retrofit and investment related to non-residential buildings. Energy requirements defined by Member States for NZEB levels are reported comparing both new and existing residential and non-residential buildings. The paper shows how the attention given to refurbishment of NZEBs increased over the last decade, but the achievement of a comprehensive implementation of retrofit remains one of main challenges that Europe is facing.

[1]  Marco António Pedrosa Santos Ferreira,et al.  Comparing cost-optimal and net-zero energy targets in building retrofit , 2016 .

[2]  Bertoldi Paolo,et al.  Synthesis Report on the National Plans for Nearly Zero Energy Buildings (NZEBs): Progress of Member States towards NZEBs , 2016 .

[3]  Paolo Maria Congedo,et al.  Efficient Solutions and Cost-Optimal Analysis for Existing School Buildings , 2016 .

[4]  D. D’Agostino.  Moisture dynamics in an historical masonry structure: The Cathedral of Lecce (South Italy) , 2013 .

[5]  P. Torcellini,et al.  Zero Energy Buildings: A Critical Look at the Definition; Preprint , 2006 .

[6]  Barrero Josefa,et al.  Promoting healthy and energy efficient buildings in the European Union: National implementation of related requirements of the Energy Performance Buildings Directive (2010/31/EU) , 2017 .

[7]  Lukas Kranzl,et al.  ZEBRA 2020 - NEARLY ZERO-ENERGY BUILDING STRATEGY 2020. Strategies for a nearly Zero-Energy Building market transition in the European Union , 2016 .

[8]  Paolo Maria Congedo,et al.  CFD modeling and moisture dynamics implications of ventilation scenarios in historical buildings , 2014 .

[9]  Paolo Maria Congedo,et al.  Cost-optimal design for nearly zero energy office buildings located in warm climates , 2015 .

[10]  Vítor Leal,et al.  A methodology for economic efficient design of Net Zero Energy Buildings , 2012 .

[11]  Stefano Paolo Corgnati,et al.  nZEB definitions in Europe , 2014 .

[12]  Delia D׳Agostino,et al.  Assessment of the progress towards the establishment of definitions of Nearly Zero Energy Buildings (nZEBs) in European Member States , 2015 .

[13]  Paolo Maria Congedo,et al.  Assessment of cost-optimality and technical solutions in high performance multi-residential buildings in the Mediterranean area , 2015 .

[14]  Ala Hasan,et al.  Fulfillment of net-zero energy building (NZEB) with four metrics in a single family house with different heating alternatives , 2014 .

[15]  Castellazzi Luca,et al.  Synthesis report on the assessment of member states' building renovation strategies , 2016 .

[16]  Shengwei Wang,et al.  Design optimization and optimal control of grid-connected and standalone nearly/net zero energy buildings , 2015 .