Our Technology
GMT has spent decades developing and refining its proprietary Plug Flow Reactor (PFR) technology to support the long-term growth of the biomethane economy.
Powered by GMT Plug Flow Reactor Technology
GMT's proprietary PFR technology is designed to support predictable retention times, efficient feedstock conversion and long-term operational performance. Unlike traditional continuously stirred tank reactor (CSTR) systems, feedstock moves through the reactor in a controlled linear flow. This approach supports higher digestion efficiency, improved biomethane yields and a lower-profile infrastructure design that integrates more effectively into the surrounding landscape.
Anaerobic digestion is a biological process that converts organic feedstocks into renewable energy and agricultural products.
Organic materials such as agricultural residues are processed in a sealed, oxygen-free environment where naturally occurring microorganisms break down the feedstock. This process produces biogas, which can be upgraded into biomethane, alongside nutrient-rich digestate (fertiliser) and biogenic CO₂.
GMT uses anaerobic digestion as the foundation of a multi-output infrastructure model that delivers value for energy, carbon and agriculture sectors.
Most anaerobic digestion plants in the UK use continuously stirred tank reactors (CSTRs), where material is constantly mixed inside a circular tank.
GMT's proprietary Plug Flow Reactor (PFR) technology takes a different approach.
Instead of continuous mixing, feedstock moves through the reactor in a controlled linear flow from one end of the system to the other. This creates a more predictable digestion process and supports efficient conversion of feedstock into biomethane.
It's a different engineering philosophy: less turbulence, more control.
The design of GMT's Plug Flow Reactor technology supports efficient feedstock conversion, predictable retention times and long-term operational performance.
The lower-profile reactor design also reduces visual impact compared with traditional anaerobic digestion infrastructure, helping projects integrate more effectively into the surrounding landscape.
Our proprietary PFR technology forms the foundation of the GMT platform, supporting the design, delivery and long-term operation of biomethane infrastructure built to perform for decades.
Engineered for the Future
40+
PFR Projects
Designed, built, and commissioned to produce renewable energy from waste over fossil fuels.
10MW
Energy Output
Our plants scale easily from 80kW - 10MW+ delivering reliable, renewable energy to the national gas grids.
99.5%
Highest Process Availability
Our highest performing plant. Aiming to maximise biogas output and minimise waste.
3.5 million
Operating Hours
Extensive real-world experience committed to long-term efficiency and reliability for renewables.
Message us
Whether you're a landowner, project partner, feedstock supplier or energy offtaker, we'd welcome a conversation about the role our biomethane platform can play in your long-term plans.