Abstract
Abstract Energy retrofit of existing buildings is one of the main keys to achieve European Union’s decarbonising objectives defined in the European Green Deal. In order to proceed into them, European policy has been adapted and several research projects are developed. The aim of this paper is to analyse the assessment methodology of the research projects, setting up the overview of the assessed fields and the criteria followed to perform and evaluate each project. As working methodology, 18 projects have been studied, firstly characterising by the main parameters and afterwards analysing the assessment followed by each one. This analysis is decomposed into five parameters: the assessment scope, reflecting the fields covered by the project’s assessment; data source, the nature of the data; verification, use of data verification strategies; and implementation of life cycle thinking in the assessment methodology. The research shows that although the projects have their bases in the EU energetic targets they also cover a wider scope, assessing many fields and combining many sources of data. However, despite the large knowledge already defined by many projects, there is a lack of global and complete roadmap to be followed.
Highlights
Buildings are responsible for about 40 % of the energy consumption and the 36 % of greenhouse gas emissions of the European Union (EU), taking into account all the stages of buildings’ life; that makes them one of the biggest contributors to the greenhouse effect [1]
The aim of this paper is to set up the overview of assessment methodologies followed in the performance and evaluation of building energy retrofit research projects linked to the European Green Deal
The TYPE of the project defines the nature of the project, most of times determined by the outcome of the project, and can be classified into three different types: Methodology Development, Energy Action Plan and Tool Development
Summary
Buildings are responsible for about 40 % of the energy consumption and the 36 % of greenhouse gas emissions of the European Union (EU), taking into account all the stages of buildings’ life; that makes them one of the biggest contributors to the greenhouse effect [1]. In response to this, improving energy efficiency is an important playground in order to achieve the European Green Deal by 2050, the goal of carbon-neutrality [1]. Higher renovation rates could make significant reduction of energy consumption and greenhouse gas emissions, and here is one of the big deals, so in order to achieve the climate and energy objectives this rates should be at least doubled [1]. The EU has prepared and updated the legislative framework with the revision of the Energy Performance of Buildings Directive (EPBD) 2010/31/EU [2] and the Energy Efficiency. The EPBD Directive was adopted in 2002 to promote the improvement of energy performance in buildings and in 2010 it was updated, with new aspects including the Recommendation List of Measures (RLM) for renovation of existing buildings [5]
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