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Perspectives on Near ZEB Renovation Projects for Residential Buildings: The Spanish Case

Centro de Ciências Exatas e Tecnológicas, Centro Universitário Univates, Rua Avelino Tallini 171, Lajeado/RS 95900-000, Brazil
Mining Engineering School, University of Vigo, Campus as Lagoas Marcosende, Vigo 36310, Spain
Industrial Engineering School, University of Vigo, Rúa Conde de Torrecedeira 86, Vigo 36208, Spain
Author to whom correspondence should be addressed.
Academic Editor: Jukka Heinonen
Energies 2016, 9(8), 628;
Received: 17 June 2016 / Revised: 15 July 2016 / Accepted: 2 August 2016 / Published: 10 August 2016
(This article belongs to the Special Issue Energy Efficient City)
PDF [5681 KB, uploaded 10 August 2016]


EU regulations are gradually moving towards policies that reduce energy consumption and its environmental impact. To reach this goal, improving energy efficiency in residential buildings is a key action line. The European Parliament adopted the Near Zero-Energy Building (nZEB) as the energy efficiency paradigm through Directive 2010/31/EU, but a common technical and legislative framework for energy renovations is yet to be established. In this paper, the nZEB definition by COHERENO was adopted to evaluate several energy renovation packages in a given building, which is also representative of the Spanish building stock. Global costs are calculated for all of them following EPBD prescriptions. Two economic scenarios are analysed: with entirely private funding and with the current public financial incentives, respectively. The results show the divergence between optimum solutions in terms of costs and of minimum CO2 footprint and maximum energy saving. Moreover, in the absence of enough incentives, some inefficient renovations could achieve a global cost close to the optimal cost. The optimum solution both in terms of energy performance and global costs was carried out and described. View Full-Text
Keywords: energy efficiency; nZEB; buildings; renovation; cost-optimal energy efficiency; nZEB; buildings; renovation; cost-optimal

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Patiño-Cambeiro, F.; Armesto, J.; Patiño-Barbeito, F.; Bastos, G. Perspectives on Near ZEB Renovation Projects for Residential Buildings: The Spanish Case. Energies 2016, 9, 628.

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