Which measure is an indicator of energy use intensity?

Energy use intensity (EUI) is a critical performance metric that expresses energy consumption in relation to building size. The measure of energy consumed per unit of floor space effectively provides a standardized way of assessing how efficiently energy is being used within a building. This metric quantifies energy usage in terms of the area, allowing for comparisons between different buildings, regardless of their size.

By expressing energy use on a per-square-foot basis (or similar units), it becomes easier to identify trends, evaluate performance, and set benchmarks within the context of energy management. This approach helps building managers and owners make informed decisions to implement energy efficiency measures and improvements.

The other options, while related to energy use in various contexts, do not directly convey energy use intensity in relation to the size of the building, which is essential to understanding EUI.