Application of the Typology Approach for Energy Renovation Planning of Public Buildings’ Stocks at the Local Level: A Case Study in Greece

George M. Stavrakakis (), Dimitris Bakirtzis, Korina-Konstantina Drakaki, Sofia Yfanti, Dimitris Al. Katsaprakakis, Konstantinos Braimakis, Panagiotis Langouranis, Konstantinos Terzis and Panagiotis L. Zervas
Additional contact information
George M. Stavrakakis: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece
Dimitris Bakirtzis: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece
Korina-Konstantina Drakaki: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece
Sofia Yfanti: Department of Mechanical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion, Greece
Dimitris Al. Katsaprakakis: Department of Mechanical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion, Greece
Konstantinos Braimakis: Department of Thermal Engineering, School of Mechanical Engineering, National Technical University of 8 Athens, 9 Heroon Polytechniou Str., 15780 Zografou, Greece
Panagiotis Langouranis: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece
Konstantinos Terzis: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece
Panagiotis L. Zervas: MES Energy S.A., Aiolou Str. No.67, 10559 Athens, Greece

Energies, 2024, vol. 17, issue 3, 1-30

Abstract: According to the latest energy efficiency European directive (EED 2023/1791/EU), the expected energy renovation rate of at least 3% of the buildings’ floor area each year towards nearly zero-energy buildings (nZEBs) is extended to include public buildings not only of the central government (as per the first EED 2012/27/EU) but also of regional and local authorities. This poses a great challenge, especially for Municipalities that often manage large building stocks with high energy demands. In response to this challenge, this paper presents the application of the so-called “typology approach” for conducting public buildings’ energy renovation plans at the local level. A computational survey is initially introduced to decide the optimal set of building-stock clustering criteria among all possible combinations, involving the minimization of the RMSE index regarding the primary energy consumption of each building. For a representative building from each identified typology, the key performance indicators (KPIs) are computed for alternative energy-upgrading scenarios. Exploiting the IMPULSE Interreg-MED project tools, the KPIs from each representative building are at first extrapolated to all buildings of the examined stock and, finally, a gradual energy renovation plan is automatically produced based on user-defined decision parameters including the required annual renovation rate. The methodology is applied for the case of the Municipality of Hersonissos in Greece. For the specific 44-buildings’ stock it was found that the optimal clustering set included four criteria, building use, construction year, heating, and a cooling system, leading to 15 building typologies. Finally, assuming a 7% renovation rate per year, a 12-year gradual renovation (nZEB transformation) plan is obtained foreseeing an 85% CO 2 emissions’ reduction.

Keywords: energy efficiency planning; public buildings; typology approach; building-stock clustering; building-stock energy assessment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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