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Building ownership, renovation investments, and energy performance-A study of multi-family dwellings in Gothenburg

Journal article
Authors Mikael Mangold
Magnus österbring
Conny Overland
Tim Johansson
Holger Wallbaum
Published in Sustainability (Switzerland)
Volume 10
Issue 5
Publication year 2018
Published at Department of Business Administration, Industrial and Financial Management & Logistics
Centre for Finance
Language en
Links www.mdpi.com/2071-1050/10/5/1684
Keywords Decision support, Energy performance certificate, Energy retrofitting, Renovation extent, Rent affordability, Tenure
Subject categories Economics and Business, Civil Engineering

Abstract

© 2018 by the authors. The European building stock was renewed at a rapid pace during the period 1950-1975. In many European countries, the building stock from this time needs to be renovated, and there are opportunities to introduce energy efficiency measures in the renovation process. Information availability and increasingly available analysis tools make it possible to assess the impact of policy and regulation. This article describes methods developed for analyzing investments in renovation and energy performance based on building ownership and inhabitant socio-economic information developed for Swedish authorities, to be used for the Swedish national renovations strategy in 2019. This was done by analyzing measured energy usage and renovation investments made during the last 30 years, coupled with building specific official information of buildings and resident area characteristics, for multi-family dwellings in Gothenburg (N = 6319). The statistical analyses show that more costly renovations lead to decreasing energy usage for heating, but buildings that have been renovated during the last decades have a higher energy usage when accounting for current heating system, ownership, and resident socio-economic background. It is appropriate to include an affordability aspect in larger renovation projects since economically disadvantaged groups are over-represented in buildings with poorer energy performance.

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