Abstract
Since 2002, the Energy Performance of Buildings Directive (EPBD) has set up the path to improve the efficiency gains in the EU building sector, including measures that should accelerate the rate of building renovation towards more energy efficient systems. Under the 2010 EPBD, all EU countries have established independent energy performance certification systems supported by independent mechanisms of control and verification. The EU directive 2018/844 has introduced different novelties and one of these regards the possibility for the Member States, together with the Long-Term Renovation Strategies (LTRS), to introduce an optional Building Renovation Passport Article 2a.1(c), considered as an empowering document that gives more reliable and independent information on the potential for energy savings that is tied up in their buildings. On 14 October 2020, the European Commission launched its Communication and Strategy on the Renovation Wave initiative, intending to double the current Europe’s renovation rate to make the continent carbon neutral by 2050. However, current practices and tools of energy performance assessment and certification applied across Europe face several challenges. In this context, the ALDREN project is a methodological framework that aims to support decision-making and investment in deep energy renovation of nonresidential buildings, based on a set of procedures (modules) that consist in the step-by-step implementation of protocols to assess the energy performance, indoor environmental quality, and financial value of buildings, before and after the energy renovation. The paper presents the ALDREN overall procedure with a focus on the development of the Building Renovation Passport and its application to an Italian office building.
Highlights
Over 3 years ago, a consortium of partners across seven EU countries came together to complete a proposal to the Horizon 2020 research programme, Energy Efficiency call EE11-2017
The research contributions of ALliance for Deep RENovation in buildings (ALDREN) protocol in comparison to the existing one for sustainable renovations of nonresidential buildings are: (i) the development of an overall methodological framework consisting of four standalone modules to assess the energy performance, Indoor Environmental Quality, and financial value of buildings with two reporting tools (EU Voluntary Certificate, Building Renovation Passport); (ii) the introduction of a specific index, called ALDREN-TAIL, to rate the Indoor Environment
Referring to the ALDREN Building Renovation Passport (BRP) development and application to some real cases and, in particular, to the one presented in this paper, some weaknesses and strengths are listed as follows, to identify open issues and points that may be implemented in future studies
Summary
Over 3 years ago, a consortium of partners across seven EU countries came together to complete a proposal to the Horizon 2020 research programme, Energy Efficiency call EE11-2017. The objective of this research was overcoming the regulatory and nonregulatory barriers to facilitate the renovation of existing building stocks. In this context, the ALliance for Deep RENovation in buildings (ALDREN) project started in November 2017. The project was led by the French scientific and technical center for building (CSTB) with a consortium of 8 partners: Politecnico di Milano, Danish Technical University, CERTIVEA, REHVA, Instituto Valenciano de la Edification, ENBEE, and VERCO [1]. The ALDREN procedure allows achieving higher renovation rates and better renovation quality by overcoming market barriers and preparing the ground for investments
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