Pset_EnergyRequirements Property set for the application of energy requirements to facility and physical elements IfcDistributionElement IfcTransportationDevice IfcDistributionElement,IfcTransportationDevice EnergyConsumption Annual energy consumption requirement PowerDemand Power demand of the element EnergySourceLabel Type of energy source e.g. Electricity, Diesel, LPG etc. utilised by the element. EnergyConversionEfficiency Measure of the efficiency of conversion of fuel energy to mechanical energy