The inaugural Carbon Storage Stewardship Survey launched on Mon 3 November 2025, and closes on Fri 30 January 2026.
The 2025 Carbon Storage Stewardship Survey (CSSS) is to be completed by the operators of all UK carbon storage licences. This survey only requests data related to processes involving the storage of carbon dioxide.
For each carbon storage exploration or storage licensee holder, the assigned SPA will be the point of contact whilst the survey is live, as well as the person responsible for the completion and submission of the survey.
The CSS Survey will be available to download/upload via the North Sea Transition Authority Web Client Web Client (SFTP) portal.
A supporting CSSS User Guide, to assist an operator whilst completing the CSS Survey, will be available for download from the portal as well as this webpage.
Note: Throughout the user guide, any reference to ‘survey year’ should be interpreted as the ‘year’ prior to survey deadline date, i.e. 2025 for this survey year.
In accordance with section 112 of the Energy Act 2023, a statutory notice requiring your organisation to provide the NSTA with the information requested in the CSSS was communicated via the CSSS launch email (and is available for download from this page).
If you have any questions, please contact CSSS@nstauthority.co.uk
Information associated with the Stewardship of Oil and Gas can be found on the Asset Stewardship webpage.