Following an EU mandate for public housing renovation, FOB Kalundborg in northwestern Zealand seized the opportunity to go beyond standard practice. By investing in energy efficiency, the project
more than doubled the expected energy savings.

The FOB Kalundborg renovation project’s expected CO2 savings were doubled by an external financing of just 8 percent of the total renovation budget. The additional investment enabled the replacement and re-insulation of technical installations. Furthermore, intelligent management was installed, which helps to reduce energy consumption and to ensure a better indoor climate for the tenants. The additional investment also paved the way for new and energy-friendly windows, and for optimal insulation of facades, exterior walls, and gables. In total, the project has realised savings on heating, electricity and water, amounting to a reduction of approximately 600 tonnes of CO2 per year.

The savings were made possible by the ESCO 2.0 financing model developed by the Danish energy efficiency contractor and advisory company Sustain. ESCO 2.0 is a holistic one-stop solution for energy renovations of buildings and public housing by bundling independent advisory services, A-Z energy renovation and project management, a savings guarantee, and external financing from the green investment and pension fund PKA.