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Building Energy Intensity

The Building Energy Intensity (BEI) object represents the average energy intensity by fuel type across a set of buildings. You can derive this data from published sources or by using energy use records as the data source and then setting up a window of time with some characteristics of the building size and type.

Here are the calculated fields:

Input fields:

Stationary Asset Energy Use (StnryAssetEnrgyUse)
- Start Date (StartDate)
- End Date (EndDate)
- Total Fuel Consumption (kWh) (TotalFuelConsumptionInKwh)
- Occupied Floor Area (sqft) (OccupiedFloorAreaInSqft)
- Fuel Type (FuelType)
Building Energy Intensity (BldgEnrgyIntensity)
- Averaging Window Start Date (AveragingWindowStartDate)
- Averaging Window End Date (AveragingWindowEndDate)

Output fields:

Building Energy Intensity (BldgEnrgyIntensity)
- Annual Energy Intensity (kWh/sqft) (AnnualEnergyIntensityInKwhSqft)
- Annual Energy Intensity (kWh/m2) (AnnualEnergyIntensityInKwhM2)
Building Energy Intensity Value (BldgEnrgyIntensityVal)
- Annual Intensity Value (kWh/sqft) (AnnualIntensityValueInKwhSqft)
- Annual Intensity Value (kWh/m2) (AnnualIntensityValueInKwhM2)

Calculations

For each Stationary Asset Energy Use
- Number of days inside window = Input End Date - Input Start Date
  
  Where:
  - Input Start Date = If(StnryAssetEnrgyUse.Start Date > BldgEnrgyIntensity.Averaging Window Start Date, StnryAssetEnrgyUse.Start Date, BldgEnrgyIntensity.Averaging Window Start Date)
  - Input End Date = If(StnryAssetEnrgyUse.End Date < BldgEnrgyIntensity.Averaging Window End Date, StnryAssetEnrgyUse.End Date, BldgEnrgyIntensity.Averaging Window End Date)
- Reported days = StnryAssetEnrgyUse.End Date - StnryAssetEnrgyUse.Start Date
- Intensity per sqft (kWh/sqft) = StnryAssetEnrgyUse.Total Fuel Consumption In Kwh / StnryAssetEnrgyUse.Occupied Floor Area In Sqft
- Intensity per sqft per day (kWh/sqft/day) = Intensity per sqft / Reported days
- Intensity per sqft inside window (kWh/sqft) = Intensity per sqft per day * Number of days inside window
For each Fuel Type
- Total Energy Intensity (kWh/sqft) = SUM(Intensity per sqft inside window (kWh/sqft))
- Total Days = SUM(Number of days inside window)
For each Fuel Type
- Total Energy Intensity per Day (kWh/sqft/day) = Total Energy Intensity (kWh/sqft) / Total Days
- BldgEnrgyIntensityVal.Annual Intensity Value (kWh/sqft) = Total Energy Intensity per Day (kWh/sqft/day) * 365
- BldgEnrgyIntensityVal.Annual Intensity Value (kWh/m2) = BldgEnrgyIntensityVal.Annual Intensity Value (kWh/sqft) * 0.092903
For Building Energy Intensity
- BldgEnrgyIntensity.Annual Intensity Value (kWh/sqft) = SUM(BldgEnrgyIntensityVal.Annual Intensity Value (kWh/sqft))
- BldgEnrgyIntensity.Annual Intensity Value (kWh/m2) = BldgEnrgyIntensityVal.Annual Intensity Value (kWh/sqft) * 0.092903

Net Zero Cloud Developer Guide

Building Energy Intensity