Do Display Energy Certificates (DECs) work?

Osaji, EE, Glew, D and Johnston, D 2017, Do Display Energy Certificates (DECs) work? , in: The 3rd International SEEDS Conference, 13th-14th September 2017, Leeds Beckett University, United Kingdom.

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This paper is part of a D.Eng. research into DEC and Advisory Report (AR) compliance of UK Government buildings. Summary statistics are produced on the lodgement, energy efficient ratings, and energy saving priority recommendations of the UK Central Government cohort of buildings for 2008 to 2017. This is the first independent synthesis of these data of its kind, which provides evidence on the success of DECs in raising awareness of the energy efficiency of UK Central Government buildings. Guidance was adopted and adapted by this paper for its quantitative analysis methodology and methods protocol, which was non-experimental. Its literature review and analysis of UK Central Government DECs and ARs from the Non-Domestic Energy Performance Certificate (NDEPC) Register have so far made some significant findings. The headline findings include that: no UK Central Government buildings achieved a DEC ‘A’ rating; only around 6% have a ‘B’ rating; 14% are ‘C’ rated; 23% are ‘D’ rated; 23% are ‘E’ rated; 11% are ‘F’ rated; and 24% are ‘G’ rated. This is significant, as it underlines difficulties that may be faced should minimum energy performance standards be introduced at a future date. Other headline findings are that only around 42% of 104 UK Central Government buildings will likely meet a 2018 target for DECs to have all buildings scoring ‘A’ to ‘D’ ratings. Significantly, this research found that non-compliance with DEC requirements was endemic, with 80% of DECs and ARs not being lodged for UK Central Government buildings. The implication is that the DEC and AR are not well enforced energy efficiency tools. This research also found 36 AR recommendations it determined to be priorities because of their frequency of occurrence, and potential for improvements of UK Central Government buildings with DEC ‘G’ ratings. However, they rarely followed the ‘Fabric First’ principle because only three (around 8%) of them addressed building fabric issues. It is not known why this is the case or if AR recommendations are influential in energy management circles across the UK Central Government estate. Future work will include creation of a qualitative analysis methodology and methods protocol to investigate why there is low compliance and lodgement of DECs and ARs by focusing on: the underlying reasons why buildings received particularly low ratings; and understanding the appropriateness and uptake of AR recommendations.

Item Type: Conference or Workshop Item (Paper)
Schools: Schools > School of the Built Environment
Journal or Publication Title: International Sustainable Ecological Engineering Design for Society (SEEDS) Conference 2017 : conference proceedings
Publisher: LSI Publishing
ISBN: 9780995569027
Related URLs:
Depositing User: EE Osaji
Date Deposited: 09 Sep 2020 14:49
Last Modified: 09 Sep 2020 15:00

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