There is a myriad of energy efficiency legislation and requirements which mandate businesses and public -sector organisations to undertake energy audits and surveys to help understand and promote energy efficiency in buildings. One of these audits is the Display Energy Certificate (“DEC”) which mandates public sector organisations (local authorities, schools, hospitals etc) to undertake an annual energy survey. The DEC provides an occupancy rating of the building (scale A to G, with A being the most efficient) by benchmarking the…