Federal Ministry for Economic Affairs and Energy (BMWE)
ongoing
iTG, ifeu, FIW München
The building sector accounts for around 35 percent of end energy consumption and around one third of greenhouse gas emissions in Germany. This sector is therefore of central importance to the achievement of the Federal Government’s energy and climate policy objectives by 2045. In 2021, to strengthen ambitions in the building sector, the previous programmes in the areas of efficiency and renewable energies were restructured and bundled into the Federal Promotion for Efficient Buildings (BEG) programme, which has been optimised in terms of content and funding conditions.The subsidy is intended to support homeowners in renovating their buildings and installing renewable heating systems. The goal is to reduce greenhouse gas emissions in the building sector by saving energy and to increase the share of renewable energies in the heating market.On behalf of the Federal Ministry for Economic Affairs and Energy (BMWE), we are evaluating BEG funding of individual measures (BEG EM), residential buildings (BEG WG), and non-residential buildings (BEG NWG), for the funding period 2021 to 2025. Among other things, the BEG contribution to the climate and energy policy objectives (GHG emission reduction, energy saving), market acceptance of the supported measures, and macroeconomic effects are evaluated.The formative evaluation contributes to the success assessment of the BEG by the BMWE on the basis of the Federal Budget Code:
The key questions cover the following topics:
On the basis of the BMWE evaluation guide and DeGEval standards, indicators and methods for evaluating the funding programme are developed. The relevant data and information are then collected and analysed. The main data sources are the funding data from KfW and BAFA and the data from surveys of grant recipients. The results will be evaluated and concrete conclusions and recommendations for action and proposals for further development of the programme derived.
As part of the evaluation, a random selection of beneficiaries is invited to take part in an online survey to provide additional information about the BEG and its implementation and impact.The invitation to participate in the survey is sent out by Prognos AG or the KfW Bankengruppe. The BMWE has requested participants complete the survey in support of the evaluation. The necessary documents (survey address, access key) will be sent by email or by post. Those who do not receive an invitation have not been selected to participate in the survey.
Further information and FAQs about the survey (in German)
In the 2024 funding year, a total of around 358,000 projects were funded by the BEG. The recipients of the grants raised just under 30 billion euros in investments. Around 6.9 billion euros in federal funds was spent on funding. Around 96 percent of the funding cases relate to renovation with individual measures (BEG EM) and 4 percent to the funding of systemic renovation measures in residential and non-residential buildings (BEG WG and NWG).
The measures funded in the 2024 funding year will save around 7.1 TWh of final energy and 7.0 TWh of primary energy per year. This will lead to an annual reduction in greenhouse gas emissions (GHG emissions) of around 2.3 million tonnes of CO2 equivalent. At around 93 percent, the majority of GHG savings are attributable to renovation with individual measures (BEG EM). Systemic renovations account for 7 percent of GHG savings.
These effects can occur in reality over a period of up to four years, depending on the timing of the implementation (implementation/call period). The nearly 30 billion euros in investments triggered by the funding will generate gross value added effects of around 24 billion euros in Germany and, correspondingly, secure or create around 311,000 full-time equivalents. These effects are particularly noticeable in small and medium-sized enterprises.
This means that the annual targets set out in the funding guidelines were not achieved (81 percent target achievement).
BMWE methodology guide (PDF, in German)
BEG Evaluation 2024 (in German)
BEG Evaluation 2023 (in German)
BEG Evaluation 2022 (in German)
BEG Evaluation 2021 (in German)
Project team: Nora Langreder, Dr Stephan Heinrich, Anna-Maria Grodeke, Markus Hoch, Paurnima Kulkarni, Konstantinos Theodorou, Nils Thamling
Last update: 26.02.2026
Project Manager
Principal
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