What does an Energy Performance Certificate (EPC) measure?

An Energy Performance Certificate (EPC) is specifically designed to measure and communicate the energy efficiency of a building. The EPC provides a rating that indicates how much energy a building uses for heating, cooling, lighting, and other operational functions, relative to its size and type. This rating helps property owners and potential buyers understand the energy demands and associated costs, as well as the environmental impact of the building.

Buildings with a higher energy efficiency rating are more likely to have lower energy bills and a reduced carbon footprint, which is crucial in the context of sustainability and climate change. The assessment typically considers factors such as insulation, heating systems, and the presence of renewable energy sources.

The other options do not pertain directly to the specific focus of an EPC: water conservation relates to the efficient use and management of water resources; indoor air quality concerns the air cleanliness and chemical composition within a building; and material durability addresses the longevity and resilience of building materials, none of which are factors explicitly measured by an EPC.