Enter the annual energy consumption (kWh) and the building area (m^2) into the Calculator. The calculator will evaluate the Energy Performance Index.

## Energy Performance Index Formula

EPI = EC / A

Variables:

- EPI is the Energy Performance Index (kWh/m^2)
- EC is the annual energy consumption (kWh)
- A is the building area (m^2)

To calculate Energy Performance Index, divide the annual energy consumption by the total building area.

## How to Calculate Energy Performance Index?

The following steps outline how to calculate the Energy Performance Index.

- First, determine the annual energy consumption (kWh).
- Next, determine the building area (m^2).
- Next, gather the formula from above = EPI = EC / A.
- Finally, calculate the Energy Performance Index.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

annual energy consumption (kWh) = 675

building area (m^2) = 800