Research and analysis
Green Gas Support Scheme (GGSS) and Green Gas Levy (GGL): interim evaluation 2025
The second annual interim report in the evaluation of the GGSS and GGL synthesises the collective findings of activities and outputs up to early spring 2025.
Documents
Details
This annual interim report is the second published output of the evaluation of the GGSS and GGL, reflecting and synthesising the findings from the second-year evaluation of their activities and outputs.
Areas of interest include:
- GGSS administration
- GGSS budget management
- GGL administration
The report is structured around 3 GGSS and 2 GGL evaluation questions for the process evaluation. It covers:
- the second GGSS process evaluation interviews
- the refined contribution claims for GGSS and GGL
- updated analysis of scheme and levy application and monitoring data
- preliminary assessment of outcomes and impact
DESNZ commissioned RSM UK Consulting LLP, supported by Winning Moves and Ricardo Energy, to undertake this research.
See the Green Gas Support Scheme (GGSS) and Green Gas Levy (GGL): interim evaluation 2024.
Updates to this page
Published 28 August 2025