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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 briefing by the Climate Policy Initiative (CPI) analyzes the economic viability, financial requirements, and energy savings associated with achieving the German government's 2010 Energy Concept targets for residential thermal retrofits. The report focuses on the feasibility of increasing the annual retrofit rate to 2% and the necessity of 'deep' retrofits to meet a target of reducing the building sector's primary energy requirement by 80% by 2050.