Question to the Department for Energy Security & Net Zero:

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.

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.