Erfüllung der Ziele des Energiekonzepts für Wohngebäudesanierungen

The document analyzes the costs and benefits of comprehensive energy renovations for multi-family and single-family homes in Germany. It finds that such renovations are economically viable for most owners if they can claim the energy savings, and that current KfW funding makes them viable across all analyzed cost estimates. To reach a 2% annual renovation rate, the study estimates annual funding needs between 2-4 billion EUR for KfW 100 standards and 4-8 billion EUR for KfW 55 standards. Achieving these targets could result in total energy savings of 110 TWh and 7.5 billion EUR by 2020.

• The German government aims to reduce primary energy demand in the building sector by 80% by 2050 and increase the energy renovation rate from 0.8% to 2%. While the 2% target is achievable because it is below the general renovation rate for exterior walls of old buildings (3%), reaching the 80% energy reduction requires every renovation to be 'comprehensive', reducing energy demand by approximately 80%.
• Energy-related additional costs for renovating multi-family houses (MFH) to KfW 100 levels range from 80 to 185 EUR/m2, while KfW 55 levels require 105 to 230 EUR/m2. For single-family houses (EFH), KfW 100 costs are between 135 and 205 EUR/m2, and one study estimates KfW 55 costs at approximately 150 EUR/m2.
• Energy renovations are economically viable for five out of seven analyzed cost estimates for multi-family houses if the owner can fully claim the savings. For single-family houses, renovations are economically viable across all cost estimates. When including KfW Bankengruppe support—which covers 31% of additional costs for KfW 100 and 50% for KfW 55—renovations become viable for all analyzed cost estimates.
• To achieve a 2% annual renovation rate based on current funding levels, annual subsidies of 2-4 billion EUR would be required for KfW 100 standards, and 4-8 billion EUR for KfW 55 standards.
• Approximately 70% of housing units were built before the first thermal insulation ordinance of 1977 and are primary targets for renovation. If these buildings reach a KfW 70 standard until 2014 and a KfW 55 standard from 2015 onwards, total savings of 110 TWh and 7.5 billion EUR could be achieved by 2020.
• Energy-related additional costs represent a median of 37.5% of the total renovation costs. This indicates that energy renovations are most cost-effective when combined with general modernization or maintenance work, as only the additional costs need to be considered.

APA

Neuhoff, K., Amecke, H., Stelmakh, K., Rosenberg, A., & Novikova, A. (2011). Erfüllung der Ziele des Energiekonzepts für Wohngebäudesanierungen. Climate Policy Initiative. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Kosten-Nutzen-und-finanzielle-Unterstützung-für-energetische-Sanierungen.pdf

Chicago

Neuhoff, Karsten, Hermann Amecke, Kateryna Stelmakh, Anja Rosenberg, and Aleksandra Novikova. Erfüllung der Ziele des Energiekonzepts für Wohngebäudesanierungen. Climate Policy Initiative, 2011. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Kosten-Nutzen-und-finanzielle-Unterstützung-für-energetische-Sanierungen.pdf.

Wikipedia

{{cite report |last1=Neuhoff |first1=Karsten |last2=Amecke |first2=Hermann |last3=Stelmakh |first3=Kateryna |last4=Rosenberg |first4=Anja |last5=Novikova |first5=Aleksandra |title=Erfüllung der Ziele des Energiekonzepts für Wohngebäudesanierungen |publisher=Climate Policy Initiative |date=May 2011 |url=https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Kosten-Nutzen-und-finanzielle-Unterstützung-für-energetische-Sanierungen.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{neuhoff2011erfllung, author = {Neuhoff, Karsten and Amecke, Hermann and Stelmakh, Kateryna and Rosenberg, Anja and Novikova, Aleksandra}, title = {{Erfüllung der Ziele des Energiekonzepts für Wohngebäudesanierungen}}, institution = {Climate Policy Initiative}, year = {2011}, month = may, url = {https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Kosten-Nutzen-und-finanzielle-Unterstützung-für-energetische-Sanierungen.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }