Energy audits and reporting research, including the Energy Savings Opportunity Scheme
Research into the effectiveness of energy audits and reporting in identifying and delivering energy efficiency savings across organisations.
Documents
Details
This research aims to understand how effective energy audits and reporting, including the Energy Savings Opportunity Scheme (ESOS), have been in identifying and delivering energy efficiency savings across organisations. These reports form part of the evidence base for the Post Implementation Review (PIR) of ESOS.
2025 Post-Implementation Review of ESOS
The 2025 post-implementation review is based on the best available evidence as of January 2025. The evidence comes from the Phase 3 notification of compliance data published by the Environment Agency and unpublished interim data from Phase 3 action plans provided directly to DESNZ by the Environment Agency.
2020 Post-Implementation Review of ESOS
The study ran from 2017 to 2019 and included:
Phase 1
- literature and evidence review
- 25 qualitative interviews and 6 workshops with stakeholder groups
- in-depth case studies with 3 stakeholder groups
Phase 2
- telephone survey of 503 complier organisations
- 10 qualitative organisational case studies with ESOS organisations and small and medium-sized enterprises
- 33 in-depth interviews with stakeholders
- linking of ESOS compliance data with secondary data
- modelling of the energy and emissions savings attributable to ESOS
Further information on the activities in the Phase 2 report is included in the Phase 2 technical report. The data tables show results from the 2018 survey of ESOS-obligated organisations.
The research follows an earlier interim evaluation, conducted between 2015 and 2017.
The evaluation was undertaken by Ipsos MORI Ltd in partnership with the Carbon Trust and University College London.
Updates to this page
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Added 2025 Post Implementation Review of the ESOS Regulations 2014.
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Link to ESOS Post Implementation Review added.
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First published.