The building sector is the largest energy consumer in Ukraine with a share of 33%, followed by the industry and transport sectors. With the support of the BMUKN and the EU Commission, the Ukrainian government has developed a concept for an Energy Efficiency Fund (EEF) that finances energy efficiency measures for buildings. This is intended to reduce energy costs of households. Poorer households, which have implemented energy-efficient measures, will also need fewer energy-related subsidies. The resulting savings in the state budget are in turn reinvested in further energy efficiency measures (S2I principle). The aim of the project is to support the Ukrainian government in the further strategic development of the Energy Efficiency Fund (EEF) with the aim of visibly increasing the contribution of the EEF to the achievement of the climate targets. Thus, the project implements targeted technical capacity building of both the EEF staff and those implementing the projects (applicants, energy auditors and construction companies).