Free Webinar: New Tools to Automate your ASHRAE 90.1 Modeling for LEED

  1. live webinar showcasing our very latest ASHRAE 90.1 PRM and LEED productivityNew and enhanced software capabilities featured during this free webinar will include:
  •          Baseline Building and HVAC system automation for LEED v4 and 2009.
  •          On-screen energy and cost comparisons between proposed and baseline buildings.
  •          Online documentation preparation system for LEED submissions.
  •          LEED v4 daylighting credit reports using Daylight Autonomy and Annual Sunlight Exposure.
  •           Assess LEED v4 Life Cycle Analysis (LCA) credits through the One-Click LCA system directly from your DesignBuilder model.

We hope you'll join us and assess for yourself whether this could help you spend less time modeling and more time adding value for your customers.

If you can’t view the live webinar on the day you can still register and watch the recording later.

DesignBuilder v6 adds a substantial set of new features and improvements compared with v5 including tools for bulk data editing and a view showing placement of construction and glazing systems across the model. Other highlights include CHP and Ice thermal storage components, Uncertainty and Sensitivity analysis reports and a new set of extensibility tools opening DesignBuilder up for plugins and scripts to access the DesignBuilder model.   

The main additions since v5 are: 

Modeller, Reporting and Visualisation


  • The Model data grid tool has been updated to allow data to be edited. You can also now define your own views on the data and there is an option to export the data to spreadsheet, modify and import back to the model. The tool is ideal for bulk editing of data and facilitating QA processes.
  • Graphical display of all constructions and glazing used in the model allows you to visually check and report where each construction and glazing system is applied in the model.
  • Graphical display of calculated natural ventilation airflows helps you to visually check the airflows through internal and external windows, vents, doors etc at the whole building level and right down to individual surfaces.
  • Rendered visualisations now allow lines to be used to more clearly represent surface edges leading to sharper-looking graphical outputs.
  • Site and building rotation now handled within the modeller allowing building geometry to be rotated accurately relative to the site.
  • Plugin for Revit 2019.



Hundreds of improvements have been made to the EnergyPlus simulation tools included with v6. The most important of these are:

  • EnergyPlus v8.9 is the target version.
  • Latest Phase Change Materials (PCM) with Hysteresis allow more accurate modelling of this innovative lightweight solution for adding thermal mass to buildings.
  • Simulations can be run for multiple years helping improve accuracy for very high mass cases such as ground domains and ground heat exchangers.
  • The Results Viewer has been updated and now includes options to view summary results tables as histograms and can also display results for multi-year simulations.
  • Improved heating and cooling system design summary outputs including fabric, ventilation and gains data.



  • Improved daylighting maps can now include numeric text labels for each grid cell and a range of options for colour palettes.
  • Radiance illuminance simulations are now run in parallel, significantly reducing wait times for larger models.
  • Improvements to the ASE Daysim simulations.
  • Option to define the ground plane extent.
  • Option to control randomness in Radiance results.
  • Improved management of calculation and display options.



  • Co-generation equipment (CHP) with options for internal combustion engine and micro turbine configurations. Trigeneration is also possible by combining generators with absorption chillers.
  • Ice thermal storage and additional plant operation schemes allow off-peak electricity to charge thermal stores.
  • Variable speed fan cooling towers.
  • Improvements to evaporative coolers.
  • Built-in curve generator tool allows curves to be quickly added to models based on manufacturer's data.

UK and Ireland Certification

  • Latest SBEM 5.6a for England, Scotland, Wales.
  • Section 63 tools for Scotland.
  • Latest SBEM v5.5e for Part-L and BERs in Ireland.

See theSBEM and DSM approval page.for information on which DesignBuilder version is approved for use in each region.

Uncertainty and Sensitivity Analysis


The result of an ongoing collaboration with UCL and EnSims, our new Uncertainty and Sensitivity Analysis tools enable a systematic quantification of risk and an evaluation of the most influential aspects of a building design in the context of energy and environmental performance. By applying a "probabilistic" definition of input design variables, the reports provide a strong supporting basis to help guide design and operational decision making.

The main features are:

  • Uncertainty and Sensitivity analysis results are presented as histograms along with summary statistics. Reports include clear text descriptions to help you interpret the results.
  • Sensitivity analysis is undertaken using multivariate linear regression. Regression parameters and standardized coefficients (a sensitivity measure) are calculated for every output variable.
  • Input design variable sampling based on probability distribution curves. More than 20 discrete and continuous distributions are available for selection and customisation.
  • Various input design sampling methods include: Random, Random Walk, Latin-Hypercube, Sobol and Halton.


  • DesignBuilder v6 also includes 3 powerful new types of custom variable to give you complete control of the parametric variations applied to the model as part of optimisation, uncertainty and sensitivity analyses.
  • The optimisation tools now allow "additional outputs" to be included alongside objective and constraint KPIs to enable more in depth post process analysis to be carried out.
  • Building rotation design variable provided (complementing previously existing site rotation).

Enhanced Extensibility

  • An API for plugins and scripts links to the DesignBuilder object model allowing an unlimited range of custom calculations, reports and model processing to be added by users and 3rd party developers.
  • Python scripting enables simulation inputs and outputs to be automatically processed before and after simulations based on scripts that you write.

DesignBuilder is a modular suite of design tools that plug in to our 3-D building modelling software. We have a set of convenient packages that suit most needs, however you can license individual modules in any combination you require. You can also license additional modules to increase the capabilities of the entry level packages as and when you need them.

Annual or Version Perpetual Licenses
DesignBuilder offers a choice of annual or version perpetual licenses. An annual license has a lower upfront cost but must be renewed each year to continue using the software. This allows you to stay up to date with the latest release of DesignBuilder and move from v5 to v6 with no upgrade charge. A v5 perpetual license allows you to continue using v5 for as long as you wish, however you will need to purchase an upgrade to move to v6. There is a 40% discount for existing license holders wishing to upgrade.

Single User License
A Single User licence allows you to run one copy of DesignBuilder at any one time. The software can be installed on any number of computers and moved from one to another. This is the simplest and most common licensing option, suitable for individuals or small teams.

Site License
A site licence is the most convenient way to share one or more licence across a number of networked machines. The site license server is installed on your network server and provides module licenses on demand to DesignBuilder users on your network. This is a more cost effective option for larger numbers of seats but does require a little additional effort to set up and administer. With a site license individual DesignBuilder modules are ordered in quantities sufficient to support your concurrent user requirements.

Evaluation License
You may obtain a free 30 day single user evaluation license to trial DesignBuilder by contacting us. This will allow you to access all the modules. You may also apply to us for an evaluation extension or to trial modules you did not use during your original evaluation period.

Education and Student Licenses
We provide 50% discount for educational users and 90% discount for individual students on application and proof of status. Academic institutions that purchases a site license for teaching use on the department network can be provided with a number of free single user student licenses for use on students own computers. Educational and student licenses cannot be used for commercial work or consultancy - a full license is required for this.

Hội thảo ra mắt chính thức Hội mô phỏng Hiệu năng công trình xây dựng Việt Nam IBPSA sẽ được tổ chức ngày 20 tháng 1 năm 2018,  chủ đề chính của Hội thảo sẽ giới thiệu định hướng cũng như chiến lược hoạt động của IBPSA- Việt Nam, đồng thời trình bày tổng quan về mô phỏng hiệu năng công trình xây dựng và vai trò của nó trong việc thiết kế, xây dựng và vận hành công trình xanh.

Công ty Cổ phần Tư vấn Đầu tư và xây dựng Đất Việt (Vilandco) hân hạnh là nhà tài trợ cho Hội thảo lần này.  Giám đốc của Vilandco - anh Nguyễn Trung Kiên là Kiến trúc sư – chuyên gia tư vấn LOTUS- chuyên gia công trình xanh sẽ có bài chia sẻ về mô phỏng hiệu năng công trình dành cho Kiến trúc sư.

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