Hydrogen needs infrastructure. Pipelines that connect where it’s made – with where it’s needed.
Apollo has been part of this journey from the start, contributing to every major hydrogen pipeline project in the UK.
Hydrogen backbone
The Hydrogen Backbone is one of the most ambitious hydrogen infrastructure projects in the UK. Its aim is to move hydrogen efficiently across Scotland and create a route for export to Europe.
Apollo has supported the project by assessing options for hydrogen storage and studying the technologies needed for blending and de-blending.
This work contributes to understanding how hydrogen can be transported and managed as part of a wider network linking Scottish production with both domestic and European demand.
Read the full report.
Project union
Project Union is led by National Gas Transmission and aims to create a national hydrogen backbone by repurposing parts of the existing methane network and building new infrastructure where required. The project is currently at feasibility stage and will be delivered in phases across nine sections of the UK.
Apollo is contributing through flow assurance analysis of the proposed transmission network. Our work includes defining operating parameters, modelling the system using hydraulic analysis software and supporting assessments of routing and constructability.
This study is helping to inform the design of a network that can move hydrogen securely and reliably across the country.
HyLine Cymru
HyLine Cymru is focused on developing hydrogen infrastructure in South Wales, supporting the region’s transition to a low-carbon economy. Moving from early studies into the next phase required clear agreements on transport, strong stakeholder engagement, and preparation for future planning applications.
Apollo acted as project manager, coordinating partners including ERM, Gardiner & Theobald, and Burges Salmon. Our role included drawing on previous study work, aligning different work packages, and ensuring legal, environmental, and technical aspects moved forward together.
This approach helped HyLine Cymru progress into Phase 2 with a transport agreement in place, engaged stakeholders, and a clear route towards future regulatory submissions.
East London hydrogen project
The East London Hydrogen Pipeline project set out to design a pipeline network to serve industrial users, transport and heat networks across East London, with the potential to link into the wider North London system.
Apollo supported the project by managing the quality of engineering work, ensuring compliance with recognised standards, and coordinating design, land, environmental and planning activities. This provided the framework needed to prepare for the next stage of development.
The work helped define a network sized for both current and future hydrogen demand, with flexibility to expand, while also generating lessons to inform future hydrogen projects across the UK.
HyNet
HyNet is one of the UK’s leading hydrogen and carbon capture projects, focused on enabling industry to switch from natural gas to hydrogen. The project is exploring how existing gas networks can be adapted to support this transition, which is vital for achieving net zero.
Apollo’s involvement has included feasibility work to assess the technical, commercial, and regulatory requirements for connecting industrial sites to a hydrogen supply. This has covered pipeline extensions, distribution facilities, and options for dual-fuel connections.
The work is helping to build a clearer understanding of the infrastructure and business models needed to supply hydrogen to industrial users, supporting the wider development of the HyNet cluster.
By supporting every major hydrogen pipeline project so far, Apollo is helping to shape the infrastructure that will carry hydrogen into the UK’s future energy system. Our work continues as these projects move from study to delivery.
If you would like to learn more about Apollo’s decarbonisation expertise, contact us at decarbonisation@apollo.engineer