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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EPC and Part L Validation

Tas 9.1 was approved for EPC and Part L by CLG on 30/05/08 (http://www.ukreg-accreditation.org/ND-ApprovedSoftware.php), making it the first DSM to be approved for Part L2 and EPC (building levels 3, 4 and 5).

This CLG letter validates Tas 9.1.4 for Part L compliance and EPC production - 100325 DSM EDSL TAS v9.1.4