The document describes the Energy Service Co-Fund (ESCO-F) model, which aims to attract private sector investment in energy efficiency projects for public facilities in developing countries. The ESCO-F will provide low-interest capital financing and technical support to de-risk projects and mobilize private funds. It will work with public sector clients like schools and hospitals to implement retrofits and replace outdated technologies. The goal is to both reduce energy costs for governments and lower carbon emissions through more efficient infrastructure.