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Written question asked by Adrian Ramsay (Green Party) on Monday, 21 July 2025, in the House of Commons. It was due for an answer on Monday, 1 September 2025. It was answered by Kerry McCarthy (Labour) on Wednesday, 3 September 2025 on behalf of the Department for Energy Security and Net Zero.


Biofuels: Greenhouse Gas Emissions

Question

To ask the Secretary of State for Energy Security and Net Zero, with reference to the research entitled Greenhouse gas reporting: conversion factors 2024, published on 8 July 2024, how the conversion factors for (a) bioenergy and (b) well-to-tank bioenergy were developed.

Answer

The Department for Energy Security and Net Zero publish Government Greenhouse Gas (GHG) Conversion Factors for Company Reporting annually. Their scope is defined to be relevant to Streamlined Energy and Carbon Reporting (SECR) regulations, following GHG Protocol guidance. The conversion factors for direct emissions from fuels and biofuels are based on the most recent data from the UK Greenhouse Gas Inventory. Well-to-tank factors are based on external studies as updated by recent available data.

Further details on how direct and well-to-tank conversion factors for fuels and bioenergy are estimated and updated can be found in the annual methodology report.


Secondary information

Type
Written question
Reference
69534
Session
2024-26
Grouped for answer
Yes
Subjects
Biofuels Greenhouse gas emissions
Contains statistics
Yes
Link
View this Written question on www.parliament.uk