Why Feedstock Optionality and Always-On Energy Are the Real Game-Changers for UK Energy Security                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

The Green Gas Taskforce (GGTF) recently brought the immense economic and environmental potential of biomethane to the House of Commons via their Director Charles McAllister.

During his speech to the Energy Security and Net Zero Committee, McAllister highlights how fully maximising the UK’s biomethane sector could create up to 57,000 highly skilled, well-paid jobs across the country - working out to roughly 90 new jobs per parliamentary constituency, predominantly outside London and the Southeast.

And, while the headline numbers on job creation, economic growth, and regional decarbonization paint a compelling picture, the underlying technical and operational characteristics of Anaerobic Digestion (AD) deserve equal spotlight.

Specifically, two structural advantages setting biomethane apart from almost every other renewable energy vector: unrivaled feedstock optionality and 24/7 baseload reliability which are, indeed, touched upon in McAllister’s encouraging and positive address.

Most renewable energy technologies are geographically bound by their natural resources: wind turbines, for example, require high wind speeds, solar installations demand unshaded surface area, and traditional large-scale thermal plants require massive, rigid rail or road transport hubs.

Anaerobic digestion turns this traditional development constraint on its head.

With AD, developers aren't locked into a single location simply because a specific fuel source exists there.

During the initial feasibility and pre-construction phases, projects enjoy significant tactical flexibility:

Grid-First Placement: Developers can prioritise sites where electrical DNO capacity (such as G99 export approval) or gas grid injection points are readily available and cost-effective to connect to.

Feedstock Diversification: Rather than relying on a single, vulnerable supply chain, an AD plant can dynamically adapt its intake, where operators can blend localised food waste, livestock slurries, farmyard manures, and regional organic residues without sacrificing digester stability.

Agricultural Integration: As highlighted by recent GGTF research, incorporating rotational break crops and sequential cover crops into the AD mix provides British farmers with lucrative cash-crop alternatives.

This regenerative approach restores soil health, reduces synthetic fertiliser dependence, and protects food production cycles while delivering high-yield energy feedstocks.

This flexibility allows developers to select optimal sites based on grid availability, low planning friction, and strong local heat offtake opportunities - building the supply chain to match the location rather than being held hostage by geographical limitations.

Intermittency remains one of the largest systemic challenges facing the UK grid.

For instance, solar panels require daylight; wind turbines require breeze.

When weather conditions drop, the grid relies heavily on fossil-fuel peaking plants or expensive battery infrastructure to maintain stability.

Biomethane and AD technology, however, operate on a fundamentally different paradigm where, once an anaerobic digester is commissioned and operating, it provides continuous, 24/7 energy generation.

Because an AD plant cannot simply be switched off on a whim - running continuously to maintain biological equilibrium - it delivers a true baseload energy supply.

Whether injected directly into the national gas grid as biomethane, utilised on-site for high-grade industrial heat recovery, or converted into continuous power, AD acts as an always-on anchor for localised and national energy security.

With the Green Gas Support Scheme (GGSS) forecast to deliver 8 TWh of biomethane by 2030 but scheduled to close to new applicants in March 2028, timing and preparation are critical.

While no formal successor scheme has been announced yet, establishing a transparent policy framework and a seamless transition of support is widely recognised as essential to maintaining investor confidence, preventing a development hiatus, and achieving the ambitious capacity figures outlined for the future.

Given standard development and consenting lifecycles, establishing a site baseline early is vital to positioning projects for upcoming policy support and securing long-term project viability.

Unlocking the full value of biomethane requires evaluating grid capacity, thermal demand, land accessibility, and regional feedstock availability in tandem right at the outset.

By proving site-specific viability early through a structured feasibility baseline, site owners, farm businesses, and waste operators can capitalise on biomethane's unique flexibility - turning localised organic waste into secure, reliable, and profitable UK energy.