Energy Savings Opportunity Scheme (ESOS) – 4th March 2026
Updated Phase 3 Notification of Compliance and Action Plan Data Publications
A direct link to data from Phase 3 Notification of Compliances was issued in February 2025. The Phase 3 Notification of Compliance Data Publication has now been updated to include all NOC data submitted up to 23rd February 2026.
The Phase 3 Action Plan Data Publication has also now been updated to include all Action Plan data submitted up to 23rd February 2026.
Notification of Compliance and Action Plan Data
Over 85% of ESOS participants are now compliant with these requirements, with more organisations currently being brought into compliance. The legislation requires all organisations that qualify for ESOS to submit a NOC and an action plan, including where no measures are proposed to be implemented in the action plan. Organisations that have not addressed these requirements are being investigated by the compliance bodies (the Environment Agency in England and other regulators for the devolved regions and offshore waters) and enforcement action may be taken against them.
Those organisations that have not addressed these requirements may be at risk of enforcement action and should contact the Environment Agency immediately for advice on what to do next.
MESOS User Management
Organisations should regularly review and maintain their contacts within the MESOS reporting system to ensure information remains accurate and up to date. Removing outdated contacts, such as individuals who have changed roles or left the organisation, helps protect sensitive information, prevents missed communications, and reduces the risk of unauthorised access.
GOV.UK One Login rollout to MESOS
As detailed previously, the Environment Agency have introduced a new way to sign in to the Manage your Energy Savings Opportunity Scheme Reporting system (MESOS), using GOV.UK One Login. This is the new secure way to access government services and will be rolled out across more services in the future.
