DESNZ has not made clear how its plans to strengthen the sustainability rules might work in practice. In its Biomass Strategy, published in August 2023, DESNZ committed to develop and consult on a common sustainability framework which could be applied to new future biomass policies and schemes across different sectors of the economy. It also committed to considering whether it should introduce a requirement that, to meet the standards for the land criteria, 100% of woody biomass should be sustainable rather than the current 70%. DESNZ acknowledges that a new approach to assurance is needed and that increasing the stringency of rules around sustainability may need an increase in resources to monitor compliance. Ofgem’s investigation into Drax, together with the detailed follow up work, indicates the level of resources which may be required to provide a higher level of assurance. Ofgem’s ability to provide assurance 4 over higher standards of sustainability will depend on increases in financial support from DESNZ and HM Treasury. Given the significant public concerns raised in relation to the findings of the KPMG review commissioned by Drax into its Canadian supply chain processes and reporting practices, from the forests of Western Canada to the power station in North Yorkshire, the full report should be made available for Parliamentary scrutiny. recommendation a. DESNZ should estimate the cost and test the effectiveness of its proposals for monitoring compliance against an increased threshold for sustainability; b. DESNZ and HM Treasury should, working with Ofgem, consider the resource implications for Ofgem of introducing and then running a new oversight regime. DESNZ should set out, and publish, the steps it is taking to make sure it has the confidence that all the fuel burned at Drax is sustainably sourced; and c. Drax should provide the Committee with the full report as produced following the review commissioned from KPMG of its Canadian supply chain processes a