What is Energy Use Intensity (EUI)?
Energy Use Intensity (EUI), total energy consumption per active floor area, is calculated and displayed in Scaler on both an asset level and portfolio level. EUI measures how much energy a building uses relative to its size, typically expressed in kBtu or kWh per square foot (or meter) per year. This metric is an indicator of operational energy efficiency.
Use EUI to monitor efficiency improvements, identify outliers, and track the impact of retrofit measures. Interpret alongside data coverage—gaps in data can distort results. Seasonal and asset turnover effects may influence year-to-year change.
How is EUI calculated in Scaler?
In Scaler, EUI = total energy consumption ÷ active floor area (kWh/area²/year).
Active area is defined as the total floor area covered by meters marked as “Active” and “Included in Calculations”, capped at the total floor area of the relevant area type (e.g. whole building). Scaler assumes meters of the same resource type do not overlap in coverage.
For Portfolio-Level EUI, the Asset-Level EUI is averaged across the portfolio.