Renewables Obligation: template methodology for measuring fossil derived contamination within waste wood

Outline of a template methodology to demonstrate how the fossil derived energy content of a representative waste wood sample can be calculated. Useful to generators utilising this fuel source who wish to claim Renewables Obligation Certificates.

Main document

[Renewables Obligation: template methodology for measuring fossil derived contamination within waste wood [PDF, 168.47KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-06/renewables_obligation_ro_guidance_template_methodology_for_measuring_fossil_derived_contamination_within_waste_wood_20250529101249.pdf)

Subsidiary documents

[Renewables Obligation: template methodology for measuring fossil derived contamination within waste wood. Spreadsheet example [XLS, 57.00KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2013/04/example-spreadsheet.xls)