Direkt zum Inhalt

Thermal Retrofitting of Worst Performing Buildings Mitigates Risk of High Heating Costs

DIW Weekly Report 19/20 / 2024, S. 139-145

Sophie Behr, Merve Kücük, Maximilian Longmuir, Karsten Neuhoff

get_appDownload (PDF  417 KB)

get_appGesamtausgabe/ Whole Issue (PDF  2.15 MB - barrierefrei / universal access)


The pace of thermal retrofit of buildings in Germany remains slow. A Worst-First approach, prioritizing the retrofit of inefficient buildings, would address energy- and social policy objectives and deliver economic and climate benefits. Data from the German Socio-Economic Panel (SOEP) show how such an approach would protect especially low-income households often living in very inefficient buildings from heating costs risks. This group comprises 28 percent of all tenants and 13 percent of all homeowners. Yet, uncertainty about the cost-benefit of retrofitting and other priorities of homeowners mean that not enough buildings are retrofitted. As a result, the saving potentials, especially from very inefficient buildings, are not being realized. This would, however, be necessary to reduce heating cost risks and energy import dependency, and to meet climate targets. Better alignment of financing and subsidy instruments with the ownership structure, the further development of building standards to include minimum energy performance standards, and reform of tenancy law could improve the situation.

Merve Küçük

Research Associate in the Climate Policy Department

Sophie Behr

Research Associate in the Climate Policy Department

Karsten Neuhoff

Head of Department in the Climate Policy Department

JEL-Classification: D12;D31;L90;Q41
Keywords: retrofitting, heat energy, worst-first approach, minimum energy performance standards