Projects
Air Ingress in Multi Occupancy Buildings (MOBs)
This project will help to inform UK Gas Distribution Network Operators (GDNOs) and wider industry on the impact of the potential for air ingress into gas-conveying pipework in MOBs. The mechanisms for air ingress into gas-conveying pipework have been shown to be gas agnostic though this project will focus on impacts specific to future hydrogen distribution to MOBs.
Air Ingress in Commercial Installations
This project investigates the risk of air ingress in medium to large commercial gas installations particularly in the context of hydrogen transition. It builds on previous domestic-focused research and aims to understand whether similar risks and mitigation strategies apply to commercial systems. The project includes technical and behavioural assessments experimental testing analytical modelling and the identification of mitigation measures.
Pre-heating Requirement for Hydrogen Transportation
Net Zero Multi-Vector Assessment
This project will help Cadent to understand considerations for a Net Zero Multi-Vector at a town scale to inform future activity on preparation for repurposing. An area will be chosen which is representative of different networks housing stock and demographics which will require different approaches and engagement.
Fairer Warmth Hub
The Fairer Warmth Hub (FWH) connects stakeholders of the Net Zero Transition through place-based strategies providing tools and guidance to facilitate local energy plans and enhance collaboration. The FWH integrates digital tools and community engagement to facilitate effective communication and planning among diverse stakeholders including households small businesses schools social healthcare and local authorities. FWH is designed to bridge the gap in the energy transition by providing tailored support to these stakeholders ensuring that the transition is inclusive and just. The FWH integrates three core elements:
- Trained ‘Champions’ – Volunteers or staff known as Champions are recruited and trained to support community engagement helping to build trust and reduce miscommunication in local energy initiatives.
 - Digital Tools (Virtual Assets) – Innovative digital tools (App + Website) and resources are used to facilitate energy transition planning and community engagement particularly assisting Customer In Vulnerable Situation (CIVS) and those who are digitally excluded.
 - Community Centres (Non-Virtual Assets) – Physical community hubs serve as accessible locations for hands-on support providing a space for CIVS and other stakeholders to engage directly in the energy transition.
 
Innovative approach to Policy document management
As part of National Gas’s Three Molecule strategy the technical evidence for the transportation of hydrogen and carbon dioxide through the National Transmission system is being gathered through the HyNTS and CO2 programmes. This technical evidence will feed into the updates of NGT’s suite of policies and procedures which are used to demonstrate compliance with the Gas Safety (Management) Regulations (GSMR) Pipeline Safety Regulations (PSR) and Pressure System Safety Regulations (PSSR).
This project will develop the approaches to compliance with regulations for hydrogen hydrogen blends and CO2 considering both new build and repurposed assets. The project will also define how the NTS Safety Case of the future will look including modular design and digitalisation to streamline access to information.
Pipeline Installation Techniques for Net Zero
NGT is committed to supporting the government and the broader industry in achieving the Net Zero target by 2050. CCUS alongside hydrogen will play a critical role in reaching this goal. Since the existing infrastructure was originally designed for methane adapting it to transport these new gases presents significant engineering challenges. To address this an extensive research program has been launched to assess the technical feasibility of repurposing sections of the NTS for hydrogen and carbon dioxide transportation. While repurposing existing pipelines will be an essential part of the transition it will not be sufficient new infrastructure will be required to support a scalable hydrogen and carbon network. Given the ambitious deployment timelines meeting these targets will require not only innovative technical solutions but also a holistic strategy that integrates the supply chain and fosters collaboration across the industry.
Hydrogen backbone social economic assessment
Develop credible and independently modelled pathways to test the economic case of developing a H2 Backbone and prepare NGT for dialogue with NESO DESNZ HMT and a wider group of stakeholders.
Biomethane feedstock mapping and strategic growth planning study
This project constitutes a GB-wide analysis of biomethane feedstock arisings including location determination of quality and composition of each feedstock type and biomethane production potential. Arisings will be quantified to county-level. Mapping software will be used to determine feedstock hotspots and alignment with the grid will be considered. The results of these analyses will be combined to consider how and where sustainable biomethane growth can best be achieved.
Predictive Tool for Unaccounted-For Gas (UAG) Identification
The Unaccounted-for Gas (UAG) project aims to develop a predictive tool that identifies and quantifies UAG across the National Transmission System (NTS). Leveraging 12-18 months of SCADA data the tool will simulate gas flow and metering behaviour to pinpoint anomalies and reduce losses. UAG currently represents significant financial cost to the consumer; even a 1% reduction could yield practical savings. The project aligns with RIIO-2 NIA criteria and supports regulatory compliance under Special Condition 5.6. It builds on prior research and integrates learnings from international benchmarks. The initiative will enhance operational efficiency improve data transparency and support long-term decarbonisation goals through better system visibility and control.
HyNTS Corrosion
The National Transmission System (NTS) pipelines employ a number of external corrosion barrier coatings primarily coal tar enamel and fusion bonded epoxy (FBE). Cathodic protection is deployed on the network to mitigate for coating failure. Additionally there are a range of pipeline steels that are used in both above ground buried pipework both stainless and carbon steels of various grades.
Following the previous NIA project: Research the Impact of Hydrogen on CP & Degradation of Coatings (NIA NGGT0191) the HSE have recommended follow-on testing to fully explore the impact of hydrogen permeation through steel pipelines on corrosion protection systems.
Additionally the impact of hydrogen on all credible pipeline corrosion mechanisms is to be considered to understand whether current assumptions with regards corrosion rates are valid for hydrogen pipelines.
Predictive Model for Flood Risk Management
This project will develop and evaluate a predictive flood monitoring system for Above Ground Installations (AGIs) and pipeline assets using real-time sensor data and 48-hour surface water forecasting. The system will be deployed at four locations identified through a nationwide flood risk survey. The trial will assess the system’s accuracy responsiveness and operational value across diverse environments. The project supports climate adaptation regulatory compliance and asset resilience by enabling early warning and proactive intervention. It aligns with RIIO-2 NIA objectives by reducing flood-related disruption enhancing safety and informing future investment decisions. The project will conclude with a technical report and recommendations for wider rollout under RIIO-3.
Hydrogen Environment Testing of Girth Welds Phase 2 - Constant Load Testing
Previous testing carried out under NIA has outstanding gaps that require further testing to close. Completing the additional testing will confirm actual fracture toughness values to be used and the corresponding J value from the crack growth resistance curve. The project outputs are required and will be used to progress design specification and procurement processes for hydrogen major projects. The results can also be applied for repurposing assessments.
Unlocking the role of nuclear in low carbon hydrogen and heat
This project constitutes a research study which will explore how nuclear energy can support a whole system energy transition by providing for the energy requirements of low-carbon hydrogen and heat networks within regions where renewable energy potential is relatively low. These are areas where hydrogen demand will need to be met by imports unless hydrogen production methods can be increased and diversified.
Recompression Solutions for a Net Zero NTS
This project will provide National Gas Transmission (NGT) with a clear technical understanding and strategy for the deployment of recompression solutions for Net Zero gas networks including hydrogen blends 100% hydrogen and Carbon Dioxide transmission.
The NIA Safe Venting & Recompression of Hydrogen innovation project explored the possibility of repurposing natural gas recompression units for hydrogen blends and 100% hydrogen and investigated new solutions for hydrogen pipeline recompression as part of routine maintenance activities.
This project will take further NGT’s knowledge of hydrogen recompression for different scales and applications on the NTS to reduce venting and explore similar solutions for carbon dioxide pipelines.
WWU Intermediate Scale Hydrogen Storage Evaluation (HyWISE)
As the hydrogen economy grows the need for flexible decentralised intermediate-scale hydrogen storage is becoming increasingly evident. While large-scale underground hydrogen storage in salt caverns and depleted gas fields will play a crucial role in long-term energy security distributed intermediate scale storage solutions are essential to bridge the gap between production and end-use ensuring reliability efficiency and resilience in hydrogen supply chains during the scale-up of the hydrogen economy. Decentralised storage facilities allow for hydrogen hubs to emerge in urban and industrial areas reducing reliance on long-distance transport infrastructure and supporting regional hydrogen economies.
A key unknown is whether the land use and geology of Wales and South West England can support intermediate-scale underground hydrogen storage (UHS) technologies. This project aims to map and assess potential storage sites within the WWU region aligning with broader energy infrastructure plans—including hydrogen and gas pipelines electricity networks industrial demand and renewable energy integration. The project will use WWU’s geology and geography as a case study and demonstrate how UHS options can support wider energy infrastructure in the region and beyond as well as future project plans. For this reason the outputs are expected to be of value to all networks.
To evaluate the feasibility of these storage solutions the University of Edinburgh will analyse rock property and strength data from publicly accessible British Geological Survey (BGS) datasets developing new insights into the engineering suitability of the region’s subsurface for hydrogen storage.
Hydrogen Refuelling from the Network
Wales & West Utilities (WWU) is undertaking a project to develop a thorough understanding of the technical and economic requirements for integrating hydrogen refuelling stations (HRS) into the existing gas network. The main aim is to enable the supply of ‘on-spec’ hydrogen for fuel cell electric vehicles (FCEVs) and hydrogen internal combustion engines (HICEs) from the heat-grade hydrogen currently delivered by the network. This involves analysing the types of contaminants present in grid hydrogen pinpointing the purification technologies needed and assessing the infrastructure requirements for compression chilling and storage to deliver hydrogen at the target pressures of 350 and 700 bar.
Hydrogen Fuel Cell Operating Hub for Repex/Large-Scale Projects
To maintain their above ground and underground pipework assets all Gas Distribution Networks (GDN) operate substantial fleets of commercial vehicles (primarily vans but also HGVs) together with mobile plant and powered equipment. Presently there is a complete reliance on hydrocarbon fuels primarily diesel and petrol. Both fuel types are usually sourced via the public retail forecourt network. Similar issues exist for other utility providers that operate underground and overground infrastructure.
Wales & West Utilities is undertaking a major programme of change to support decarbonisation and deliver a hydrogen-ready Net Zero gas network. Our distribution network iron mains replacement programme (Repex) requires significant excavation and pipe replacement activity laying long-life hydrogen-ready polyethylene pipe by a variety of means.
The project endeavours to identify a suite of suitable zero-emission mobile plant assets tools and equipment for carrying out Repex work that WWU could hire or purchase for operational trials and to identify opportunities for changing equipment items to simplify recharging/refuelling requirements in the future.
The objectives of this project are:
- To analyse current energy demands sound pressure and vibration levels associated with existing ICE powered mobile plant assets ICE-powered tools and equipment and electrical equipment used for carrying out planned iron mains replacement work on the gas distribution network.
 - To estimate the future electrical energy demands (and sound pressure and vibration levels) placed by future zero-emission powered tools and equipment on a zero-emission site-based power generation facility.
 - To identify opportunities for changing equipment items to simplify recharging/refuelling requirements in future.
 - To identify a suite of suitable zero-emission mobile plant assets tools and equipment that WWU could hire (or purchase) and utilise for operational trials short and longer term. This will include the energy source and the means of recharging and/or refuelling on site and/or at regional depot locations.
 
Economics of Biomethane
The consultant will deliver a report with supporting data to demonstrate that the economics stack up for biomethane while also supporting the UK’s net zero ambitions and contributing to our energy security.
Calorific Gas Sensor
The UK and Irish gas networks are undergoing a major transition to support the integration of green gases including biomethane and hydrogen. A significant challenge is the inability of the current gas billing infrastructure based on flow-weighted average calorific value (CV) measurements taken at National Transmission System (NTS) offtakes to accurately reflect the gas composition received by consumers—particularly with the increasing number of decentralised injection points. This discrepancy presents a technical and regulatory hurdle to achieving fair and transparent billing.
This programme is leveraging 3 suppliers to develop a range of novel calorific value sensors that will enable calorific value to be accurately measured at different points on the network without the need for venting.
The programme comprises of 3 individual projects which will develop each suppliers’ technology up to a sufficiently high TRL where the sensors are ready to be trialled in the field. Each supplier will be delivering their own scope of work but will be expected to share a reasonable amount of information with each other in order to ensure maximum value is obtained from this programme. The innovators will not be expected to disclose any information that could provide them with a competitive advantage over the other solutions