Abstract
Energy renovation of post-World War II private multifamily residential buildings has been identified to have a great deal of energy-saving potential but faces a great challenge across Europe, and especially in South Europe, due to fragmented property structures and longer return periods in energy efficiency investments. However, there is great deal of potential in activating demand aggregation in areas with homogeneous typologies. Local authorities play a key role in leading district-scale renovation but lack adequate methods for analysing and prioritizing areas from an integrated perspective, including social aspects. The methodology presented in this paper aims to support local authorities by providing a tool for the diagnosis and prioritization of homogeneous groups of residential buildings to address their renovation based on an analysis of their needs and opportunity factors. First, the methodology sets the universe of analysis; second, based on indicators, it provides comparative information within the municipality, which leads to a prioritization of areas for building renovations according to the state of the building and to the socio-economic profile of the residents; lastly, a detailed diagnosis of selected groups is performed, providing information to design the Renovation Action Plans accordingly. The application of the methodology in Basauri is presented in this paper.
Highlights
This paper describes the methodology developed in AGREE based on GIS-based multi-criteria decision analysis (GIS-Multi-Criteria Decision Analysis (MCDA))
The scope of the AGREE project is homogeneous sets of multifamily residential buildings with three or more floors built between 1940 and 1970, before the thermal regulation NBE-CT-79 came into force, and their refurbishment offers a great deal of energy saving potential
As a result of limiting the universe of analysis for the Basauri case study, the buildings shown in grey in Figure 3 are those that correspond to homogeneous sets of multifamily residential buildings with three or more floors built between 1940 and 1970
Summary
The building sector is responsible for approximately 36% of GHG emissions and 40%. Two thirds (65%) of the European building stock was built before 1980, and about 97% of the E.U.’s buildings must be upgraded to achieve the 2050 decarbonization goal; only 0.4%–1.2% are renovated each year [1,2]. Building renovation offers multiple benefits and high social and private returns across several dimensions, especially in the residential sector. Apart from energy efficiency, it enhances climate resilience, circularity, and renewables uptake, improves indoor air quality and health, and lowers poverty. It is a labour-intensive activity, with a high percentage of SMEs, that can make a key contribution to creating jobs and stimulating economic recovery in the context of the COVID-19 pandemic
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