The Environment Agency (EA) has updated and split the ESOS guidance into 2 separate documents for phase 3 and phase 4. The remaining deadline for phase 3 is to submit the second progress update report by 5 December 2026. The phase 4 guidance provides information on the qualification, compliance and notification requirements for the fourth compliance period. It reflects the changes in the most recent amendment in the Energy Savings Opportunity Scheme Regulations 2014, as amended 2026. A link to the new phase 4 guidance has been added to the publication page.
Source: EA.