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International Conference on Innovative Applied Energy    

E-Proceedings ISBN: 978-1-912532-05-6

14-15 March 2019, Oxford, United Kingdom



Potential for savings of GHG emissions of Czechia through increasing energy efficiency of buildings



Antonin Lupisek

Czech Technical University in Prague, Czechia


Paper Abstract

Buildings in Europe consume about 40 % of energy and emit one third of greenhouse gases (GHG), thus increasing energy efficiency of building stock represents a potential major contributor to decarbonisation of European economy. 
Objective of the present short paper is to present an estimation of possible savings of CO2 emissions of Czechia through increasing energy efficiency of its buildings. 

A study of a Czech Alliance Chance for Buildings in its reports provided potentials for savings in primary energy consumed in both residential and non-residtential buildings with projections toward 2100. Based on these reports and background data provided by the authors I have made calculations of Czech building stock's potentials for savings of GHG. I compared the results with the actual GHG emissions of Czechia. I have also taken the emission gap from the Emissions Gap Report 2016, divided it by world population and multiplied by population of Czechia and from the result took proportion allocated to buildings and compared the resulting GHG limit (needed to stay bellow 2 °C) with the maximum CO2 savings coming out from the calculations. 

In the most favourable scenario (deep energy retrofitting) it is possible to reduce the yearly CO2 emissions from the Czech building stock from actual 44.6 Mt to 17.9 Mt, which represents roughly 60 % savings. This amount would also represent a drop of 26 % of total national CO2 emissions (compared to 2014). On the other hand, the carbon budget of Czech building stock for 2015-2050 is 563 Mt CO2, but in the most favourable scenario the potential reduction is only to 1,028 Mt. 

The potential for CO2 savings through deep retrofitting of building stock and construction of new building only in passive house standard is significant. On the other hand, the building stock cannot stand up to emissions goals from the Paris agreement isolated, but combination with decarbonisation of Czech power grid is needed. 

The used calculation were only rough. They took into account changes of energy sources in building stock but did not make any assumptions about future changes of conversion factors for electricity from the national grid. Perhaps more work is needed to make more analyses taking also the evolution of national power sources into account. 

Paper Keywords
buildings, energy efficiency, climate change, scenarios.
Corresponding author Biography

Antonín Lupíšek is expert in sustainability assessment systems and performance of built environment. Currently serving as Head of Dept. Architecture the Environment at University Centre for Energy Efficient Buildings, Czech Technical University in Prague. Finished his Master degree in building engineering in 2006 and PhD on multicriteria assessment of buildings in 2013. Worked as researcher at DEKTRADE (R&D solar systems, 2004-2005), as researcher at EkoWATT (R&D energy in efficiency, 2005-2006). Since 2006 research scientist at the Faculty of Civil Engineering and since 2012 also at the University Centre for Energy Efficient Buildings, Czech Technical University in Prague. Experience from several national and international research projects - for example LEnSE (FP6), PERFECTION (FP7), SuPerBuildings (FP7), EURL3A (EAC: Knowledge Partnerships), MORE-CONNECT (H2020) and participated in development of the Czech national building sustainability certification system SBToolCZ. Member of national team at U.S. Solar Decathlon 2013 (3rd place with project AIR House). Founding member of Czech Sustainable Building Society (CSBS - iiSBE Czech), active member of the International Initiative for a Sustainable Built Environment (iiSBE) and founding member of the Czech Green Building Council. Chair of the Organizing Committee of the international conference Central Europe towards Sustainable Building held under auspices of UNEP, CIB and iiSBE since 2010.

The International Conference on Innovative Applied Energy (IAPE’18)