Greenhouse gas reporting: conversion factors 2025
Page summary:
These emission conversion factors are for use by UK and international organisations to report on 2025 greenhouse gas emissions.
Change made:
First published.
Time updated:
9:30am, 10 June 2025
Government conversion factors for company reporting of greenhouse gas emissions
Page summary:
The government conversion factors for greenhouse gas reporting are for use by UK and international organisations to report on certain greenhouse gas emissions.
Change made:
Added the 2025 conversion factors.
Time updated:
9:30am, 10 June 2025
UK ETS 2025 Baseline Data Collection and HSE/USE scheme status: how to meet the data submission requirements
Page summary:
Guidance for operators on meeting the requirements for the baseline data collection and scheme status application submission window, 1 April – 30 June 2025.
Change made:
Updated ‘UK ETS17’ as the previous version stated that the relevant year when allocation would be reduced is 2026 – this was incorrect, and the relevant year is 2027 according to Article 16(5) of the FAR.
Time updated:
3:26pm, 10 June 2025
UK Emissions Trading Scheme (UK ETS): technical guidance and tools
Page summary:
Guidance to help installations in the UK ETS with greenhouse gas emissions permits, and aircraft operators to understand and comply with their obligations under the scheme.
Change made:
Updated ‘UK ETS17’ as the previous version stated that the relevant year when allocation would be reduced is 2026 – this was incorrect, and the relevant year is 2027 according to Article 16(5) of the FAR.
Time updated:
3:27pm, 10 June 2025
Taking part in the UK Emissions Trading Scheme markets
Page summary:
This guidance explains the operation of the UK ETS markets and how to take part in auctions and in trading on the secondary market.
Change made:
Cost Containment Mechanism figures updated for latest month. ‘Taking part in the UK Emissions Trading Scheme markets’ has been updated to include further links to existing references, and to remove outdated information on previous auctions. The ICE email contact has been amended.
Time updated:
5:15pm, 10 June 2025
