We work closely with biomethane producers, anaerobic digestion (AD) plant operators, developers, and The UK Gas Distibution Networks (GDNs). Whether you are looking to develop a new project or optimise the output of an existing facility, Apollo brings the engineering capability and sector knowledge to deliver practical, commercially sound solutions.
Gas Grid Injection & Network Capacity
A significant challenge facing biomethane producers today is network capacity — particularly during summer months when lower gas demand prevents producers from injecting the full volume of gas they are capable of generating. Apollo is actively working on capacity studies with gas network operators, including Wales & West Utilities (WWU), evaluating options to unlock additional injection capacity and maximise the value of green gas assets.
Our capacity-related work includes:
- Smart pressure control – optimising network pressure management to allow greater injection volumes
- Network reinforcement – engineering solutions to upgrade existing infrastructure
- Reverse compression – technical assessment and design for compressing gas back through the network to increase throughput
- Feasibility studies and options appraisals for producers seeking to maximise grid injection
Biomethane Plant Engineering
Apollo provides multidisciplinary engineering support across the development of biomethane and biogas plants. Our team covers the key engineering disciplines needed to take a project from early-stage design through to construction-ready, working alongside trusted specialist partners like Global Energy Group, where additional expertise is required, to ensure a coordinated and efficient delivery.
Our plant engineering capabilities include:
- Civil engineering – site layout, foundations, containment, and drainage design
- Mechanical engineering – process plant, pipework, and equipment specification
- Electrical engineering – power supply, distribution, and connection design
- Instrumentation & control – process monitoring, SCADA, and automation systems
- Project management – coordinating delivery across disciplines and supply chain
Regulatory Compliance & Financial Incentives
Navigating the regulatory landscape for biomethane production and gas grid injection requires specialist knowledge. Apollo has in-depth familiarity with the rules governing injection into the gas network, as well as the financial support mechanisms available to producers like the Green Gas Support Scheme.
We advise on the financial incentives available for renewable methane, whether for injection into the gas grid or for use as a vehicle fuel (biomethane for transport / CNG). Our team ensures that producers understand and can access the full range of support available throughout the project lifecycle.
Biogenic CO₂ Utilisation & e-SAF
Apollo is at the forefront of thinking around the value of biogenic CO₂ captured during the Biogas upgrading process. Rather than venting this CO₂, there are significant opportunities to monetise it, most notably through its use in the production of electro-sustainable aviation fuel (e-SAF).
We can support clients in understanding and realising the commercial value of their biogenic CO₂ streams, connecting biogas producers with emerging offtake markets and advising on the technical requirements for CO₂ capture, purification, and logistics.
Why Apollo?
Apollo combines the breadth of a multidisciplinary engineering consultancy with genuine depth of knowledge in the biomethane sector. We understand the technical, commercial, and regulatory challenges producers face, and we are structured to provide coherent, end-to-end support rather than piecemeal advice.
From feasibility and planning through engineering design, grid connection, and compliance, and into operation and optimisation, Apollo is the partner of choice for biomethane producers looking to maximise the value of their assets.
