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  • OpenBuildings 9.2 Approved for PartL 2021

    OpenBuildings version 10.09.02.36 has been fully approved by the Energy Performance of Buildings Division for PartL submission. This can be downloaded using Connection Client or from the Bentley website as below: Important: Once you have installed…
  • OpenBuildings Energy Simulator PartL Exam - October 2022

    We are pleased to announce the next OpenBuildings Energy Simulator PartL exam has been scheduled for: 6th October 2022 at 10.00am - available for registration here . The exam is for energy assessors who wish to become accredited with using OpenBuildings…
  • New PartL 2021 Regulations - What to Expect

    PartL 2021 and net-zero The new 2021 Part L Regulations will be a major step towards realising the goal of net-zero energy buildings, and achieving this will bring many new challenges and opportunities in nearly all aspects of the building life-cycle…
  • OpenBuildings Energy Simulator PartL Exam - April 2022

    We are pleased to announce the next OpenBuildings Energy Simulator PartL exam has been scheduled for: 28th April 2022 at 10.30am - available for registration here . The exam is for energy assessors who wish to become accredited with using…
  • Merged Room causing PartL calculation failure

    Hi Shane, in my modell, I mergedd two rooms and merged rooms cuased my PartL calcaution failure and I am not sure if there is any way to unmege it (As Slit Function not working for my complex model). or any other solution please? If possible, I…
  • Using Room Mapping Facility

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Building Modelling Subarea: N/A Overview The Room Mapping facility allows you to assign various…
  • OpenBuildings Energy Simulator

    OpenBuildings Energy Simulator is the complete solution for the analysis of building energy performance and sustainable building design. Utilising industry leading standards ASHRAE , CIBSE , EnergyPlus , Radiance , and PartL , OpenBuildings Energy Simulator…
  • CIBSE Certification Accredited Energy Assessor Exams

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview Bentley Systems are fully approved by CIBSE Certification to provide…
  • Energy Simulator PartL Approval Information

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview OpenBuildings Energy Simulator is fully approved by the Energy Performance…
  • Error - "Keyword" error message

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview When running a PartL calculation you may come across an SBEM error…
  • Error - "Bad reference : CONSTRUCTION"

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview This article details the steps to take should the below error occur…
  • OpenBuildings Energy Simulator PartL Exam - October 2021

    We are pleased to announce the next OpenBuildings Energy Simulator PartL exam has been scheduled for: 14th October 2021 at 10am - available for registration here . The exam is for energy assessors who wish to become accredited with using OpenBuildings…
  • OpenBuildings Energy Simulator PartL Exam - August 2021

    We are pleased to announce the next OpenBuildings Energy Simulator PartL exam has been scheduled for: 25th August 2021 at 10am - available for registration here . The exam is for energy assessors who wish to become accredited with using OpenBuildings…
  • OpenBuildings Energy Simulator PartL Exam - June 2021

    We are pleased to announce the next OpenBuildings Energy Simulator PartL exam has been scheduled for: 21st June 2021 at 10am - available for registration here . The exam is for energy assessors who wish to become accredited with using OpenBuildings…
  • PartL error "Keyword out of range : PITCH = 180"

    Hi, When running PartL, I get an error of Keyword out of range : PITCH = 180 Do you know the cause of this at all (I have one pitched roof that I have double checked and seems ok)
  • OpenBuildings Update 8 approved for PartL

    We are happy to announce that OpenBuildings Energy Simulator Update 8 has been fully approved by the Energy Performance of Buildings Division for use in England, with Wales to follow. Please note this version must be used to create XML files for PartL…
  • Undo option remain inactive in Energy Stimulator

    While working in Open Building Designer Energy Stimulator (Update 8), undo option remain inactive even after enabling it. Kindly provide a solution for the same.
  • How do I edit glazing properties for doors and windows?

    How do I model an external door with glazing? I understand that for the Part L calculation, the software treats any door with more than 50% glazing as a window, but how do you set the glazing percentage on a door? I've also altered the default glazing…
  • OpenBuildings Energy Simulator PartL L3/4 (SBEM) course and exam

    We are pleased to announce the availability of the OpenBuildings Energy Simulator PartL course for Energy Assessors, along with the related exam. For further information please see our OpenBuildings Energy Simulation Community - announcement here.
  • OpenBuildings Energy Simulator PartL Exam - March 2021

    We are pleased to announce the availability of the OpenBuildings Energy Simulator PartL course, along with the related exam. These are aimed at energy assessors who wish to become accredited with using OpenBuildings Energy Simulators PartL SBEM interface…
  • PartL Room Data Default settings

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview Upon clicking the 'Set all rooms to default' button your settings…
  • shading/overhangs modelling in OpenBuildings Energy simulator

    Hi, How to model shading/overhangs in OpenBuildings Energy simulator for 'standard project' (not conceptual)? The tab 'Shading' does not seem to work for me. Is there any course that would cover the subject ? AECOsim Energy Simulator Modeler training…
  • Error - "At least one ZONE needed"

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview When running a PartL calculation you may come across the following…
  • OpenBuildings PartL approved in England and Wales

    We are pleased to announce that the OpenBuildings Energy Simulator priority build is now fully approved for PartL calculations in both England and Wales. Energy Assessors can obtain compliance with PartL of the building regulations, produce Energy…
  • OpenBuildings for PartL Calculations

    We are pleased to announce that the OpenBuildings Energy Simulator has been fully approved for PartL calculations in both England and Wales. To obtain the above priority build please log a Service Request here . Please note that this will be included…