Display Energy Certificate Assessor Training

A Display Energy Certificate (DEC) Assessor is an accredited individual who undertakes energy calculations, using approved Operational Rating (OR) software, on public buildings.

In England, Wales and Northern Ireland, Public buildings of more than 250m2 and which are frequently visited by the public are required to display a DEC and have an Advisory Report.

DECs are also an approved means of assessing buildings for the Government's mandatory Energy Savings Opportunities Scheme (ESOS).

In Scotland, assessors may wish to train to be DEC assessors in the light of new legislation relating to non domestic buildings of more than 1000m2 which compels owners who are selling or letting such buildings to either implement measures contained in the mandatory Action Plan or alternatively obtain a DEC each year.

DECs can also be used on a voluntary basis as a valuable tool to help manage energy efficiency in any non domestic building.

Training Options

We offer two training options for individuals wanting to undertake DEC training. The routes are ‘new entrant’ and ‘Approved Prior Experiential Learning’ (APEL). 

DEC Training- New Entrant

We offer a 2 day course for ‘new entrants’ to qualify as a DEC assessor. The ABBE (Awarding Body for the Built Environment) DEC course includes:

Introduction to energy assessment, industry background, EPBD legislation and current update.

The ABBE Award, timescales and assessment requirements

Operational Ratings methodology, Display Energy Certificates (DECs) and Advisory Reports (ARs)

Introduction to OR Calc, the Government calculation software

Building Services in non domestic buildings

Good surveying practice, data collection requirements including conventions and QA requirements