diff --git a/honeybee_grasshopper_energy/icon/HB Empty OSM.png b/honeybee_grasshopper_energy/icon/HB Empty OSM.png
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diff --git a/honeybee_grasshopper_energy/json/HB_Empty_OSM.json b/honeybee_grasshopper_energy/json/HB_Empty_OSM.json
new file mode 100644
index 0000000..71ee344
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+++ b/honeybee_grasshopper_energy/json/HB_Empty_OSM.json
@@ -0,0 +1,64 @@
+{
+  "version": "1.8.0", 
+  "nickname": "EmptyOSM", 
+  "outputs": [
+    [
+      {
+        "access": "None", 
+        "name": "osw", 
+        "description": "File path to the OpenStudio Workflow JSON on this machine. This workflow\nis executed using the OpenStudio command line interface (CLI), which\nwill create the empty OSM following the input simulation parameter\nspecifications.", 
+        "type": null, 
+        "default": null
+      }, 
+      {
+        "access": "None", 
+        "name": "osm", 
+        "description": "The file path to the empty OpenStudio Model (OSM) that has been generated\non this computer.", 
+        "type": null, 
+        "default": null
+      }, 
+      {
+        "access": "None", 
+        "name": "idf", 
+        "description": "The file path of the empty EnergyPlus Input Data File (IDF) that has been\ngenerated on this computer.", 
+        "type": null, 
+        "default": null
+      }
+    ]
+  ], 
+  "inputs": [
+    {
+      "access": "item", 
+      "name": "_epw_file", 
+      "description": "Path to an .epw file on this computer as a text string.", 
+      "type": "string", 
+      "default": null
+    }, 
+    {
+      "access": "item", 
+      "name": "_sim_par_", 
+      "description": "A honeybee Energy SimulationParameter object that describes all\nof the setting for the simulation. If None, some default simulation\nparameters will automatically be used.", 
+      "type": "System.Object", 
+      "default": null
+    }, 
+    {
+      "access": "item", 
+      "name": "_folder_", 
+      "description": "An optional folder on this computer, into which the IDF and result\nfiles will be written.", 
+      "type": "string", 
+      "default": null
+    }, 
+    {
+      "access": "item", 
+      "name": "_write", 
+      "description": "Set to \"True\" to create the empty OSM file.", 
+      "type": "bool", 
+      "default": null
+    }
+  ], 
+  "subcategory": "5 :: Simulate", 
+  "code": "\nimport sys\nimport os\nimport re\nimport json\n\ntry:\n    from ladybug.futil import preparedir, nukedir\n    from ladybug.epw import EPW\nexcept ImportError as e:\n    raise ImportError('\\nFailed to import ladybug:\\n\\t{}'.format(e))\n\ntry:\n    import honeybee.config as hb_config\nexcept ImportError as e:\n    raise ImportError('\\nFailed to import honeybee:\\n\\t{}'.format(e))\n\ntry:\n    from honeybee_energy.simulation.parameter import SimulationParameter\n    from honeybee_energy.run import to_empty_osm_osw, run_osw\n    from honeybee_energy.result.osw import OSW\nexcept ImportError as e:\n    raise ImportError('\\nFailed to import honeybee_energy:\\n\\t{}'.format(e))\n\ntry:\n    from lbt_recipes.version import check_openstudio_version\nexcept ImportError as e:\n    raise ImportError('\\nFailed to import lbt_recipes:\\n\\t{}'.format(e))\n\ntry:\n    from ladybug_{{cad}}.{{plugin}} import all_required_inputs, give_warning\nexcept ImportError as e:\n    raise ImportError('\\nFailed to import ladybug_{{cad}}:\\n\\t{}'.format(e))\n\n\nif all_required_inputs(ghenv.Component) and _write:\n    # check the presence of openstudio\n    check_openstudio_version()\n\n    # process the simulation parameters\n    if _sim_par_ is None:\n        _sim_par_ = SimulationParameter()\n        _sim_par_.output.add_zone_energy_use()\n        _sim_par_.output.add_hvac_energy_use()\n        _sim_par_.output.add_electricity_generation()\n    else:\n        _sim_par_ = _sim_par_.duplicate()  # ensure input is not edited\n\n    # assign design days from the DDY next to the EPW if there are None\n    if len(_sim_par_.sizing_parameter.design_days) == 0:\n        msg = None\n        folder, epw_file_name = os.path.split(_epw_file)\n        ddy_file = os.path.join(folder, epw_file_name.replace('.epw', '.ddy'))\n        if os.path.isfile(ddy_file):\n            try:\n                _sim_par_.sizing_parameter.add_from_ddy_996_004(ddy_file)\n            except AssertionError:\n                msg = 'No ddy_file_ was input into the _sim_par_ sizing ' \\\n                    'parameters\\n and no design days were found in the .ddy file '\\\n                    'next to the _epw_file.'\n        else:\n             msg = 'No ddy_file_ was input into the _sim_par_ sizing parameters\\n' \\\n                'and no .ddy file was found next to the _epw_file.'\n        if msg is not None:\n            epw_obj = EPW(_epw_file)\n            des_days = [epw_obj.approximate_design_day('WinterDesignDay'),\n                        epw_obj.approximate_design_day('SummerDesignDay')]\n            _sim_par_.sizing_parameter.design_days = des_days\n            msg = msg + '\\nDesign days were generated from the input _epw_file but this ' \\\n                '\\nis not as accurate as design days from DDYs distributed with the EPW.'\n            give_warning(ghenv.Component, msg)\n            print(msg)\n\n    # process the simulation folder name and the directory\n    _folder_ = hb_config.folders.default_simulation_folder if _folder_ is None else _folder_\n    directory = os.path.join(_folder_, 'openstudio')\n\n    # delete any existing files in the directory and prepare it for simulation\n    nukedir(directory, True)\n    preparedir(directory)\n\n    # write the simulation parameter JSON\n    sim_par_dict = _sim_par_.to_dict()\n    sim_par_json = os.path.join(directory, 'simulation_parameter.json')\n    if (sys.version_info < (3, 0)):  # we need to manually encode it as UTF-8\n        with open(sim_par_json, 'wb') as fp:\n            sim_par_str = json.dumps(sim_par_dict, ensure_ascii=False)\n            fp.write(sim_par_str.encode('utf-8'))\n    else:\n        with open(sim_par_json, 'w', encoding='utf-8') as fp:\n            sim_par_str = json.dump(sim_par_dict, fp, ensure_ascii=False)\n\n    # collect the two jsons for output and write out the osw file\n    osw = to_empty_osm_osw(directory, sim_par_json, epw_file=_epw_file)\n\n    # run the measure to translate the JSON\n    osm, idf = run_osw(osw, silent=True)\n    if idf is None:  # measures failed to run correctly; parse out.osw\n        log_osw = OSW(os.path.join(directory, 'out.osw'))\n        errors = []\n        for error, tb in zip(log_osw.errors, log_osw.error_tracebacks):\n            if 'Cannot create a surface' in error:\n                error = 'Your {{Cad}} Model units system is: {}. ' \\\n                    'Is this correct?\\n{}'.format(units_system(), error)\n            print(tb)\n            errors.append(error)\n        raise Exception('Failed to run OpenStudio CLI:\\n{}'.format('\\n'.join(errors)))\n", 
+  "category": "HB-Energy", 
+  "name": "HB Empty OSM", 
+  "description": "Create an empty OpenStudio Model (OSM) file with no building geometry.\n_\nThis is useful as a starting point for OSMs to which detailed Ironbug systems\nwill be added. Such models with only Ironbug HVAC components can simulate\nin EnergyPlus if they use the LoadProfile:Plant object to represent the\nbuilding loads.\n_\nThey are useful for evaluating the performance of such heating/cooling plants\nand, by setting the simulation parameters and EPW file with this component, any\nsizing criteria for the plant components can be set.\n-"
+}
\ No newline at end of file
diff --git a/honeybee_grasshopper_energy/src/HB Empty OSM.py b/honeybee_grasshopper_energy/src/HB Empty OSM.py
new file mode 100644
index 0000000..020217d
--- /dev/null
+++ b/honeybee_grasshopper_energy/src/HB Empty OSM.py	
@@ -0,0 +1,156 @@
+# Honeybee: A Plugin for Environmental Analysis (GPL)
+# This file is part of Honeybee.
+#
+# Copyright (c) 2024, Ladybug Tools.
+# You should have received a copy of the GNU Affero General Public License
+# along with Honeybee; If not, see <http://www.gnu.org/licenses/>.
+# 
+# @license AGPL-3.0-or-later <https://spdx.org/licenses/AGPL-3.0-or-later>
+
+"""
+Create an empty OpenStudio Model (OSM) file with no building geometry.
+_
+This is useful as a starting point for OSMs to which detailed Ironbug systems
+will be added. Such models with only Ironbug HVAC components can simulate
+in EnergyPlus if they use the LoadProfile:Plant object to represent the
+building loads.
+_
+They are useful for evaluating the performance of such heating/cooling plants
+and, by setting the simulation parameters and EPW file with this component, any
+sizing criteria for the plant components can be set.
+
+-
+    Args:
+        _epw_file: Path to an .epw file on this computer as a text string.
+        _sim_par_: A honeybee Energy SimulationParameter object that describes all
+            of the setting for the simulation. If None, some default simulation
+            parameters will automatically be used.
+        _folder_: An optional folder on this computer, into which the IDF and result
+            files will be written.
+        _write: Set to "True" to create the empty OSM file.
+
+    Returns:
+        report: Reports, errors, warnings, etc.
+        osw: File path to the OpenStudio Workflow JSON on this machine. This workflow
+            is executed using the OpenStudio command line interface (CLI), which
+            will create the empty OSM following the input simulation parameter
+            specifications.
+        osm: The file path to the empty OpenStudio Model (OSM) that has been generated
+            on this computer.
+        idf: The file path of the empty EnergyPlus Input Data File (IDF) that has been
+            generated on this computer.
+"""
+
+ghenv.Component.Name = 'HB Empty OSM'
+ghenv.Component.NickName = 'EmptyOSM'
+ghenv.Component.Message = '1.8.0'
+ghenv.Component.Category = 'HB-Energy'
+ghenv.Component.SubCategory = '5 :: Simulate'
+ghenv.Component.AdditionalHelpFromDocStrings = '0'
+
+import sys
+import os
+import re
+import json
+
+try:
+    from ladybug.futil import preparedir, nukedir
+    from ladybug.epw import EPW
+except ImportError as e:
+    raise ImportError('\nFailed to import ladybug:\n\t{}'.format(e))
+
+try:
+    import honeybee.config as hb_config
+except ImportError as e:
+    raise ImportError('\nFailed to import honeybee:\n\t{}'.format(e))
+
+try:
+    from honeybee_energy.simulation.parameter import SimulationParameter
+    from honeybee_energy.run import to_empty_osm_osw, run_osw
+    from honeybee_energy.result.osw import OSW
+except ImportError as e:
+    raise ImportError('\nFailed to import honeybee_energy:\n\t{}'.format(e))
+
+try:
+    from lbt_recipes.version import check_openstudio_version
+except ImportError as e:
+    raise ImportError('\nFailed to import lbt_recipes:\n\t{}'.format(e))
+
+try:
+    from ladybug_rhino.grasshopper import all_required_inputs, give_warning
+except ImportError as e:
+    raise ImportError('\nFailed to import ladybug_rhino:\n\t{}'.format(e))
+
+
+if all_required_inputs(ghenv.Component) and _write:
+    # check the presence of openstudio
+    check_openstudio_version()
+
+    # process the simulation parameters
+    if _sim_par_ is None:
+        _sim_par_ = SimulationParameter()
+        _sim_par_.output.add_zone_energy_use()
+        _sim_par_.output.add_hvac_energy_use()
+        _sim_par_.output.add_electricity_generation()
+    else:
+        _sim_par_ = _sim_par_.duplicate()  # ensure input is not edited
+
+    # assign design days from the DDY next to the EPW if there are None
+    if len(_sim_par_.sizing_parameter.design_days) == 0:
+        msg = None
+        folder, epw_file_name = os.path.split(_epw_file)
+        ddy_file = os.path.join(folder, epw_file_name.replace('.epw', '.ddy'))
+        if os.path.isfile(ddy_file):
+            try:
+                _sim_par_.sizing_parameter.add_from_ddy_996_004(ddy_file)
+            except AssertionError:
+                msg = 'No ddy_file_ was input into the _sim_par_ sizing ' \
+                    'parameters\n and no design days were found in the .ddy file '\
+                    'next to the _epw_file.'
+        else:
+             msg = 'No ddy_file_ was input into the _sim_par_ sizing parameters\n' \
+                'and no .ddy file was found next to the _epw_file.'
+        if msg is not None:
+            epw_obj = EPW(_epw_file)
+            des_days = [epw_obj.approximate_design_day('WinterDesignDay'),
+                        epw_obj.approximate_design_day('SummerDesignDay')]
+            _sim_par_.sizing_parameter.design_days = des_days
+            msg = msg + '\nDesign days were generated from the input _epw_file but this ' \
+                '\nis not as accurate as design days from DDYs distributed with the EPW.'
+            give_warning(ghenv.Component, msg)
+            print(msg)
+
+    # process the simulation folder name and the directory
+    _folder_ = hb_config.folders.default_simulation_folder if _folder_ is None else _folder_
+    directory = os.path.join(_folder_, 'openstudio')
+
+    # delete any existing files in the directory and prepare it for simulation
+    nukedir(directory, True)
+    preparedir(directory)
+
+    # write the simulation parameter JSON
+    sim_par_dict = _sim_par_.to_dict()
+    sim_par_json = os.path.join(directory, 'simulation_parameter.json')
+    if (sys.version_info < (3, 0)):  # we need to manually encode it as UTF-8
+        with open(sim_par_json, 'wb') as fp:
+            sim_par_str = json.dumps(sim_par_dict, ensure_ascii=False)
+            fp.write(sim_par_str.encode('utf-8'))
+    else:
+        with open(sim_par_json, 'w', encoding='utf-8') as fp:
+            sim_par_str = json.dump(sim_par_dict, fp, ensure_ascii=False)
+
+    # collect the two jsons for output and write out the osw file
+    osw = to_empty_osm_osw(directory, sim_par_json, epw_file=_epw_file)
+
+    # run the measure to translate the JSON
+    osm, idf = run_osw(osw, silent=True)
+    if idf is None:  # measures failed to run correctly; parse out.osw
+        log_osw = OSW(os.path.join(directory, 'out.osw'))
+        errors = []
+        for error, tb in zip(log_osw.errors, log_osw.error_tracebacks):
+            if 'Cannot create a surface' in error:
+                error = 'Your Rhino Model units system is: {}. ' \
+                    'Is this correct?\n{}'.format(units_system(), error)
+            print(tb)
+            errors.append(error)
+        raise Exception('Failed to run OpenStudio CLI:\n{}'.format('\n'.join(errors)))
diff --git a/honeybee_grasshopper_energy/user_objects/HB Empty OSM.ghuser b/honeybee_grasshopper_energy/user_objects/HB Empty OSM.ghuser
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index 0000000..ca546b8
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