Energy Use Intensity Calculator

Formula

The formula to calculate the Energy Use Intensity (EUI) is:

\[ EUI = \frac{TE}{TFLA} \]

Where:

\( EUI \) is the energy use intensity (GJ/ft² or kBtu/m²).
\( TE \) is the total annual energy consumption of a building (GJ or kBtu).
\( TFLA \) is the total floor area of the building (ft² or m²).

Example

Let's say the total annual energy consumption (\( TE \)) is 5000 GJ and the total floor area (\( TFLA \)) is 2000 ft². Using the formula:

\[ EUI = \frac{5000}{2000} = 2.5 \text{ GJ/ft²} \]

So, the Energy Use Intensity (\( EUI \)) is 2.5 GJ/ft².

What is EUI?

Energy Use Intensity (EUI) is a measure of the total energy per unit of area that a building consumes on an annual basis. The energy is typically measured in units of gigajoules (GJ) or kBtu. The area units are most often square feet or square meters. EUI is an important metric for assessing the energy efficiency of buildings.