Increasing energy prices are a particular burden on low-income households and jeopardize their social participation. At the same time - despite substantial financial incentives through federal energy conservation programs - only a small share of low-income households invest in energy efficiency. To better understand the barriers to energy efficiency investments among low-income households, this project focuses on the role of energy auditors. To this end, we are conducting a survey among energy auditors in the Stromspar-Check program of the Caritas and the Association of Energy Agencies in Germany. In this program, the energy auditors are employed in the context of a reintegration program, and are thus to be understood as "peers" of the audited low-income households.