ESOS NEWSLETTER – JULY 2025 (ISSUE 39)
This issue of the ESOS Newsletter from the Environment Agency shares updates on the MESOS reporting system and submission of the Progress Update 1.
MESOS Reporting System Update
The Progress Update 1 functionality has now gone live within the MESOS system. In order to submit your progress update, you must have registered an organisation account within the MESOS system.
To initiate and submit your Progress Update 1 please follow the steps below:
- Login at https://manage-energy-saving-
opportunities-reporting. service.gov.uk/ - Select ‘Accounts’ section
- Select your organisation account and ‘start a new task’
- Click the green button under ‘Phase 3 Progress Update 1’ titled ‘Start’
- This starts the Progress Update 1 workflow
Once the Progress Update 1 is started you can access it as a task in your dashboard and submit this to the regulator once complete.
As communicated in the May 2025 newsletter (issue 36), for organisations qualifying for Phase 3 of ESOS, the deadline for submitting your ESOS Progress Update 1 is the 5 December 2025.
Submission of Initial Progress Updates
To support ESOS participants in gathering the information needed for the initial progress update, the Environment Agency (EA) is providing the following documents with this newsletter:
- an Initial Progress Update (PU1) template
- a Q&A containing frequently asked questions on Progress Updates
- detailed Progress Update guidance
Please note: The files shared above will expire within 30 days of this newsletter being issued. The EA will share with you further information on where you can access these documents permanently in a future edition of this newsletter.
The template replicates the questions that appear in the MESOS system and enables collection of all the necessary data. Now that the functionality to enable submission of the initial progress update is available in MESOS, the data must be transferred manually into MESOS as the template itself cannot be uploaded. Although lead assessors can assist with gathering information and completing the template for the initial progress update, only the responsible undertaking can enter and submit the data in MESOS.
Disaggregated undertakings, i.e. undertakings which have left their highest parent group / participant since it submitted an action plan, are required to submit an initial progress update on their own behalf if they have not agreed to do so with either their old group / participant or new group. This will require the creation of an account in MESOS, and the Q&A explains how to do this. The Q&A, guidance and template documents explain how to complete the information requirements.
Any late or non-submission of the initial progress update could be subject to enforcement action by the regulator.
Q&A
What are the compliance rates for NOCs and action plans?
Over 80% of ESOS participants are now compliant with these requirements, with more organisations currently being brought into compliance.
What is happening to organisations that have not submitted a NOC or an action plan?
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.
If I have not submitted a NOC or action plan can I still do so?
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.
Contact the Environment Agency
For any IT specific queries relating to the MESOS Reporting System, please contact the EA's ESOS IT helpdesk.
If you have any queries relating to ESOS or if there is anything specific you would like to see in future ESOS newsletters, please consult the ESOS Guidance in the first instance or email the EA's ESOS Technical Helpdesk.