UK Emissions Trading Scheme (UK ETS): reports and scheme reviews
Scheme or compliance data and other reporting by the UK ETS Authority.
This page contains scheme or compliance data and other reporting relating to the functioning of the UK ETS Authority.
See also:
- Participating in the UK ETS for an overview of the scheme and first steps for new participants
- Policy aims of the UK ETS for an overview of existing policy and next steps for developing the scheme
- Technical guidance and other tools for current scheme participants
- Operation of the UK ETS markets for how to take part in auctions and trade on the secondary market
Functioning of the UK carbon market
Annual reports covering the operational performance of the UK ETS and data arising from auctions and compliance.
Allocation tables
These allocation tables contain lists of free allocations for the 2021 to 2025 allocation period, for aircraft operators and installation operators.
Hospitals and small emitters (HSEs) emissions and targets
Ultra-small emitters (USEs)
Reviews of the UK ETS
Evaluation of the UK ETS 2023 – 2026
The UK ETS Authority is undertaking an evaluation to understand:
- the effectiveness of the scheme’s implementation
- the early outcomes of the scheme
- its longer-term impacts
As part of our commitment to using robust evidence to support the development and implementation of policies, and in keeping with best practice, the evaluation is a 2-phase process.
We commissioned CAG Consultants to undertake the evaluation in partnership with GC Insight (previously named Winning Moves), University College London and Cambridge Econometrics.
The first phase of the evaluation, covering processes, outcomes and early impacts, was completed in December 2023.
The second phase began in 2025, with a second survey to collect further evidence launched in June 2025. UK ETS participants may be contacted by researchers as part of the study.
2023 Review of the UK Emissions Trading Scheme
This report of the UK ETS Authority reviews the UK ETS in its first years of operation, and fulfils the legislative requirement set out in Article 17 of the Greenhouse Gas Emissions Trading Scheme Order 2020:
Public reports from the UK ETS Registry
Various reports are available from the Registry, including
- the annual compliance report on emissions and surrendered allowances
- lists of the holders of the different types of accounts (installations, aircraft operators, and traders) currently held in the Registry.
UK ETS Registry reporting page
UK ETS regulator reports (discontinued)
The UK ETS regulator report was the UK ETS equivalent of the EU ETS Article 21 Questionnaire. It was an analysis of:
- the allocation of allowances
- the operation of registries
- the application of the monitoring and reporting guidelines
- verification
- issues relating to compliance
The page also includes the Article 21 report from our final year of participation in the EU ETS as a member state.