pEUI formulas

There are three ways to report fuel sources on the Track Design Data page.

1. Entering the Gross pEUI or/and Net pEUI data

1.1. Only reporting Gross pEUI

Gross pEUI = Data entered by the user.

Net pEUi = Gross pEUI

1.2. Only reporting Net pEUI

If Net pEUI > 0 then Gross pEUI = Net pEUI

If Net pEUI <= 0 then Gross pEUI = 0

1.3. Reporting  Gross and Net pEUI

Gross pEUI = Data entered by the user.

Net pEUi = Data entered by the user.

2. Adding fuel sources 

2.1. Without fossil fuels

Gross pEUI = Grid Electricity / Project Area

Net pEUI = (Grid Electricity - Renewable Fuel Sources) / Project Area

Where

Renewable Fuel Sources = Electricity from dedicated off-site renewables  + Electricity from on-site renewables

2.2. With fossil fuels

Gross pEUI = (Grid Electricity + fossilFuel )/ Project Area 

Net pEUI = ((Grid Electricity  + Fossil Fuel) - ( On and Off-Site Renewable Fuel Sources) ) / Project Area 

Where

 Fossil Fuel = Other fossil fuel sources + District + Gas

Observation:  Even though electricity from purchased off-site renewables is reported, it will not be taken in account for the calculations of Net and Gross pEUI.

Note: Units for Gross and Net pEUI displayed depend on the project settings.

You can find more information on the Net Operational Carbon value here.