ESOS is an energy auditing and assessment scheme introduced by the UK government, intended to encourage large enterprises in the UK to focus on being more energy efficient. It is mandatory for those organisations which meet the qualification criteria.
If your company qualifies for the Energy Savings Opportunity Scheme (ESOS), it must undertake an energy assessment and audit every four years and to identify ways to save energy.
The Energy Savings Opportunity Scheme (ESOS) reports are submitted every four years and look ahead to identify potential opportunities to improve energy efficiency in an organisation. ESOS reports should quantify the potential energy saving, as well as the financial implications of any potential opportunities to implement energy efficiency measures.
Streamlined Energy and Carbon Reporting is annual and looks backwards and details any energy efficient actions that have been implemented during the reporting year, with the idea that the benefits of such actions will show in the organisation’s Intensity Ratio (when compared to previous years’ ratios). If energy efficient actions have been put in place due to recommendations in previous ESOS reports, it is recommended that the ESOS report is referenced within the SECR section of the organisation’s annual report.
As of January 2021, UK installations are no longer in the EU ETS. They are in the UK ETS, which abides by very similar rules and principles.
For more details visit https://www.gov.uk/guidance/energy-savings-opportunity-scheme-esos.