Environmental Design Solutions Limited (EDSL) was formed in 1989 to commercially develop Tas Software. EDSL sells Tas software and consultancy services using Tas. EDSL believe that the mixing of development, consultancy and software support leads to a focused software product, with quality support available to end users.

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LCC and EPC Assessment

In order to use Tas for UK regulatory work, including Part L2 assessment and EPC certification, you must first become accredited by CIBSE. Details of the process are available at www.cibsecertification.co.uk

CIBSE require each candidate to be assessed for competency in using Tas before they can be accredited to use the software for Part L2 or EPC work. Candidates must therefore complete the following:

  1. Attendance of the 3 day Building Designer training course (click for details).
  2. Attendance of the 2 day Part L2/EPC training course (click for details).
  3. Submission of model(s) to EDSL for assessment:
    1. Candidates wishing to become a Low Carbon Consultant (LCC) must submit a single Part L2 project for assessment.
    2. Candidates wishing to become a Level 5 Energy Assessor must submit both a PartL2 project and a separate EPC project for assessment. These submissions must be for different buildings, contain 20-200 zones and use multiple HVAC systems (i.e. each model must contain more than one sub-project served by different system types)

Training courses are charged at £250 per person per day. Assessment is charged at £250 per model. All charges are non-inclusive of VAT.

For each model that you are submitting, you should use the latest version of Tas and follow these instructions:

  1. In the Tas Manager, set the current project directory to the directory containing the project you wish to submit.
  2. Open the “UK Building Regulations v3.5a” macro.
  3. Run the project.
  4. In the initial “Project” dialog box of the “UK Building Regulations v3.5a” macro, click on the “Clear stored zone data” button.
  5. Close the macro.
  6. Create a zip file containing all files (except TSD files and TBD files other than the source TBD) and subfolders in your current project directory.
  7. If the zip file is larger than 5-10mb, open the T3D file and export it without shadow calculations, merging it with the source TBD file. This will allow the TBD file to be zipped up to a much smaller size. If you do this, you must say so when uploading your files.
  8. Create a written statement on headed paper which states that this submission is the applicant’s own work. This statement must be signed by the applicant and by a director or partner from the company the applicant works for.
  9. Create a purchase order for “LCC Part L2 assessment” or "EPC Level 5 Assessment". The cost of each assessment is £250 (excluding VAT).
  10. Send the purchase order, the zip file containing your project, the associated Part L2 compliance report and the written submission that this is the applicant’s work to our Consultancy Services Manager, Paul Bacon, by using our contact form, and selecting the LCC Assessment category.

Applicants will be advised on aspects of the work that may need bringing up to standard and may be given one opportunity to correct minor errors in the project and resubmit it within 30 days. If significant changes are required, or the 30 days elapse, the applicant will be required to submit a new project and will be charged for this as a separate assessment.