Ofgem opened a consultation on Special Condition 3.21 (Use It or Lose It: UIOLI) of the Gas Distribution Licences on 10 August 2026, with a closing date of 7 September 2026. The consultation proposes modifications to allow flexible reallocation of biomethane connection funding allocations between Cadent Gas and Southern Gas Networks (SGN) within the same corporate group where those allocations are not being utilised within agreed timescales. The total funding envelope across the group remains unchanged; the proposal addresses only the internal allocation mechanism between the two networks.

The practical effect, if implemented, would be to reduce the risk of approved connection budgets sitting unutilised at one network while connection applications queue at the other, within the same ownership group. For AD developers with biomethane connection applications at either Cadent or SGN, the consultation is relevant because it may affect the timing of connection offer letters and the availability of existing funded connection capacity. Our researchers at TWD note that the proposal does not alter the overall quantum of connection funding or the competitive position of unaffiliated network operators; it is an internal administrative flexibility measure within a corporate group context. Responses are due by 7 September.

The Anaerobic Digestion and Bioresources Association (ADBA) is coordinating the collection of industry signatures for a formal letter addressed to Prime Minister Andy Burnham and Chancellor John Healey. The letter calls for a defined long-term biomethane support framework beyond the current Green Gas Support Scheme structure, covering the post-2028 period, and advocates for a clear policy signal on carbon capture requirements as a condition of future support. ADBA is also seeking a commitment to consult the industry on the interaction between the mandatory food waste collection rollout and AD gate-fee structures.

The dual addressee of Burnham and Healey reflects the cross-departmental nature of UK biomethane policy: DESNZ owns the gas support mechanism and net-zero targets, while Defra controls food waste and agricultural feedstock policy. The letter signals that ADBA is positioning the sector for a coordinated advocacy push ahead of the Spending Review decisions expected in autumn 2026.

The planning appeal for Whitwick Manor's proposed agricultural AD facility reached a procedural deadline on 12 August 2026, with the case attracting significant attention as a test of whether local environmental concerns, specifically the cumulative nutrient and catchment impact on the River Wye, can override a net-zero infrastructure application that meets PAS 110 digestate quality standards. The River Wye, which flows through the border counties of England and Wales, has been the subject of sustained environmental campaigns focused on phosphate and nitrate loading from intensive livestock and, increasingly, from digestate application.

The Whitwick case is a bellwether because it presents the planning inspector with a direct conflict between two legitimate policy imperatives: supporting the development of renewable energy infrastructure needed to meet net-zero commitments, and protecting a designated Special Area of Conservation from further nutrient enrichment. A decision to uphold the appeal on PAS 110 compliance grounds would strengthen the position of agricultural AD operators in catchment-sensitive areas; a dismissal on cumulative catchment impact grounds would signal that compliance with the digestate quality standard is insufficient where the receiving environment is already stressed. Our researchers at TWD are monitoring the outcome carefully.

The latest published data from the Green Gas Support Scheme confirms 14 registered participants as of the reporting period, with cumulative payments since the scheme's inception totalling £40 million and 649 GWh of biomethane injected into the grid during the 2025/26 financial year. The GGSS commissioning deadline for projects to qualify under existing agreed terms remains a live issue: implementing regulations confirming any extension of the deadline to 2030, which was flagged in the previous Spending Review, have not yet been laid before Parliament, creating uncertainty for projects in late-stage development that are planning their commissioning programme around the extended deadline assumption.

ADBA and individual operators have flagged this implementation gap as a priority resolution for autumn 2026. The 649 GWh injection figure for 2025/26 represents meaningful progress toward the government's long-term trajectory, but remains well below the NESO-assessed sustainable threshold of 30 TWh for the UK, underscoring the scale of development still required even on a conservative pathway.

The National Energy System Operator (NESO) has published an assessment placing the sustainable domestic biomethane production threshold for the UK at approximately 30 TWh per year, significantly below the 64 TWh per year figure that has been cited in some industry scenarios based on theoretical feedstock availability. The 30 TWh figure reflects a "waste-first" feedstock prioritisation that excludes energy crops from the sustainable pathway and applies conservative assumptions on agricultural residue availability, food waste collection ramp-up and import sustainability criteria.

The NESO assessment is significant for long-term project planning because it represents the first published quantitative anchor from the system operator for what the UK can sustainably deliver. A 30 TWh ceiling (compared to the 649 GWh currently injected) still implies a forty-six-fold expansion of current grid injection, but it closes off scenarios that assumed energy-crop-based biomethane at large scale. Our researchers at TWD assess the "waste-first" policy direction as now firmly established; developers whose project economics depend on dedicated energy crop feedstocks should review their long-term support assumptions in the context of this assessment. Future government support is also being increasingly framed as contingent on carbon capture integration and strict methane leak management protocols.