Much like the R-2000 program, Passive House has its own proprietary energy simulation software and energy targets based on that energy model. The results won't necessarily give you the same results as say a simulation done using Natural Resources Canada's HOT 2000 Energy Simulation software or, perhaps more importantly, outputs from common heat loss and heat gain that are compliant with the CSA F280 CAN/CSA F280-12 Standard Determining the Required Capacity of Residential Space Heating and Cooling Appliances. However, the software is recognized by the Ontario Building Code and the British Columbia Building Code for determining energy code compliance.