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This report by the Climate Policy Initiative and DIW Berlin presents findings from a survey of 78 thermal retrofitting practitioners to inform the German government's debate on tax incentives for residential building retrofits. The study evaluates the effectiveness of comprehensive versus single-measure retrofits, the appropriateness of the KfW 85 energy standard, the necessary timeframes for project completion, and the risks associated with stepwise implementation.

This report by the Climate Policy Initiative analyzes the policies and decision-making processes surrounding the thermal efficiency retrofit of residential buildings in Germany. It outlines the government's goal to reduce primary energy demand in buildings by 80% by 2050 and examines the barriers and levers—including information tools, financial incentives, and contractor certification—needed to increase both the rate and depth of retrofits.

This report by the Climate Policy Initiative (CPI) maps the policy landscape for thermal energy efficiency in Germany's residential building sector. It categorizes policies into financial instruments, information tools, and performance standards, analyzing how they interact to drive energy demand reductions. The document details specific federal programs, their objectives, and their estimated impacts on building owners and contractors.

This report by the Climate Policy Initiative (CPI) reviews information instruments designed to promote energy efficiency retrofits in the residential building stock, with a primary focus on Germany and supporting evidence from international case studies. The document categorizes these tools based on the stage of the homeowner's decision-making process: moving uninterested households toward consideration, assisting those in the planning phase, and training the professionals who implement the retrofits.

This report by the Climate Policy Initiative analyzes the decision-making process of 2,000 German owners of single- and two-family houses regarding thermal efficiency retrofits. The study categorizes households into non-planning, planning, and action stages to identify how motivations, financial barriers, and information sources evolve throughout the process. Key findings highlight that while building appearance is a primary initial trigger, financial concerns and the desire for thermal comfort and energy savings become more prominent as households move toward implementation.

This report by the Climate Policy Initiative evaluates the potential for tax incentives to support thermal retrofits in Germany, comparing them with existing KfW loan and grant programs and international experiences from Italy, the Netherlands, and the United States.