Using Tax Incentives to Support Thermal Retrofits in Germany

The report analyzes the effectiveness of tax credits and accelerated depreciation in promoting thermal retrofits, noting that while such schemes see high utilization, they often fail to trigger comprehensive deep retrofits. In contrast, Germany's KfW program achieves a higher rate of comprehensive retrofits by offering significantly higher support for deep measures and requiring certified expert oversight. The authors suggest that simple application processes and policy certainty are critical for investor confidence, particularly for high-cost comprehensive projects.

• Tax credit schemes for thermal retrofits generally experience high utilization among both residential and commercial building owners, although there is evidence of high free-rider rates in the U.S. and the Netherlands.
• Current tax credit designs in Italy and the Netherlands do not effectively promote comprehensive retrofits because they do not sufficiently differentiate support levels between single and comprehensive measures.
• The German KfW program achieves a higher share of comprehensive retrofits, accounting for 70% of total investment support from its loan program, by providing significantly higher financial incentives for deep retrofits compared to single measures.
• Simple and clear application and compliance processes are key to program utilization; the report suggests that any new German tax incentive should align with existing KfW criteria to avoid complexity.
• Policy certainty and the reduction of risk are essential for comprehensive retrofits due to their higher investment costs; KfW manages this through an up-front approval process.
• Different support mechanisms appeal to different owners: tax incentives attract those valuing tax savings or avoiding loans, while KfW programs attract those with lower income tax rates or those who cannot finance investments against future tax benefits.

APA

Neuhoff, K., Amecke, H., Novikova, A., Stelmakh, K., Deason, J., & Hobbs, A. (2011). Using Tax Incentives to Support Thermal Retrofits in Germany. Climate Policy Initiative. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/09/Using-Tax-Incentives-to-Support-Thermal-Retrofit-Summary.pdf

Chicago

Neuhoff, Karsten, Hermann Amecke, Alexandra Novikova, Kateryna Stelmakh, Jeff Deason, and Andrew Hobbs. Using Tax Incentives to Support Thermal Retrofits in Germany. Climate Policy Initiative, 2011. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/09/Using-Tax-Incentives-to-Support-Thermal-Retrofit-Summary.pdf.

Wikipedia

{{cite report |last1=Neuhoff |first1=Karsten |last2=Amecke |first2=Hermann |last3=Novikova |first3=Alexandra |last4=Stelmakh |first4=Kateryna |last5=Deason |first5=Jeff |last6=Hobbs |first6=Andrew |title=Using Tax Incentives to Support Thermal Retrofits in Germany |publisher=Climate Policy Initiative |date=July 2011 |url=https://www.climatepolicyinitiative.org/wp-content/uploads/2011/09/Using-Tax-Incentives-to-Support-Thermal-Retrofit-Summary.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{neuhoff2011using, author = {Neuhoff, Karsten and Amecke, Hermann and Novikova, Alexandra and Stelmakh, Kateryna and Deason, Jeff and Hobbs, Andrew}, title = {{Using Tax Incentives to Support Thermal Retrofits in Germany}}, institution = {Climate Policy Initiative}, year = {2011}, month = jul, url = {https://www.climatepolicyinitiative.org/wp-content/uploads/2011/09/Using-Tax-Incentives-to-Support-Thermal-Retrofit-Summary.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }