Dear Chris,
I hope you are doing well.
I am writing to ask for your advice regarding an issue I encountered while importing existing OpenStudio energy models into Honeybee in Rhino 8.
I am currently working with residential building archetypes developed for Quebec, aiming to use Honeybee for parametric retrofit analysis and multi-objective optimization.
I imported an existing archetype (R_SF_Det_1fl_1946-1970) using HB Load gbXML OSM IDF, with reset_props_ = False. Although the geometry imports correctly, none of the original energy properties appear to be preserved:
-
All rooms are assigned the Default Generic Construction Set.
-
All rooms receive the Plenum program type.
-
Occupancy, lighting, equipment loads, and schedules are missing.
-
HVAC systems and conditioning assignments are missing.
Consequently, running the imported model through HB Model to OSM produces zero energy consumption and zero conditioned floor area. The import component reports no errors.
Interestingly, the original OSM runs correctly in OpenStudio, producing approximately 23,875 kWh/year, closely matching the archetype’s published value of 23,789 kWh/year. I also tried importing the IDF version, but encountered the same issue.
My installed versions are:
-
Rhino 8
-
Ladybug Tools Grasshopper: 1.10.59
-
Python: 3.13.14
-
OpenStudio SDK: 3.11.0
-
EnergyPlus: 25.2.0
-
Radiance: 5.4
I was wondering whether this is a known limitation of the importer or if there is a recommended approach to preserve the original constructions, internal loads, schedules, and HVAC assignments when importing existing OSM models into Honeybee.
My goal is to work with these validated archetypes without manually reconstructing their energy properties.
I would be happy to share the OSM/IDF files and simulation reports if helpful.
Thank you very much for your time, guidance, and all your contributions to Ladybug Tools.
Best regards,
Bahador
