At the time of writing this guidance there is a range of interchangeable terms to describe the process to identify decarbonisation options within a building, such as: Decarbonisation Options Assessment, Decarbonisation Audit, Energy Appraisal, Energy Audit, Energy Feasibility Study and others.
For the purpose of this guidance, we will refer to the process as a Decarbonisation Options Assessment, which will be used to describe the process of identifying and evaluating decarbonisation options that could be implemented to reduce energy demand, optimise energy efficiency, and/or deploy low and zero carbon technologies within/across a building(s) or estate, in order to achieve Net Zero Carbon for Operational Energy.