Projects
B-linepack+
Linepack flexibility is key for Gas Transmission to provide system resilience by management of swings within operational limits. In a hydrogen world we know our energy content per km of linepack will decrease by up to 76%. Therefore embedded resilience systems in the form of lined rock shafts are being investigated to supplement loss in linepack capability. We envision systems if implemented for hydrogen transmission to act similar to how now decommissioned natural gas holders were utilised for operational flexibility pressure regulation supply/demand mismatch management load balancing emergency backup and production buffering.
LISTEN – Local Insights Supporting Transparent Energy Networks
The LISTEN (Local Insights Supporting Transparent Energy Networks) project aims to create a scalable data-led approach to understanding and building social consent for the energy transition. LISTEN integrates AI-driven tools place-based engagement and co-designed dashboards to help energy networks plan with communities not just for them.
The platform brings together four core elements:
- Regional Dashboards: Visualising insights by geography topic and demographics to inform planning and engagement strategies.
- Multi-Source Data Capture: Synthesising local news social media planning documents and community events for a holistic view of local feeling.
- Voice-Enabled Surveys: Capturing authentic community sentiment in people’s own words with AI sentiment analysis assessing tone confidence and emotion.
- Tailored Recommendations: Providing SGN and partners with actionable insights and engagement strategies aligned with Ofgem’s fairness and consumer-centric priorities.
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.
Excess Flow Valve (EFV) Durability
This project will help to inform UK Gas Distribution Network Operators (GDNOs) and wider industry on the long-term suitability of existing Excess Flow Valve (EFV) designs in a future where hydrogen is being distributed in network pipelines. A risk to normal EFV functionality exists in the event that an ignition occurs within the downstream gas installation pipework and this project will help to understand the effectiveness of existing EFV designs to manage this risk identifying any necessary modifications to existing EFV designs where appropriate.
CO2 Capture and Methanation Feasibility Study
CO₂ utilisation in the UK remains technically and commercially uncertain. Dispersed emitters and biogenic sources are largely excluded from industrial CCUS clusters leaving a gap in scalable cost-effective carbon management solutions. This project will conduct a Desktop feasibility study covering SGN’s operational regions and local emitters within ~30 mile radius of candidate biomethane sites.
- Stakeholder and vendor engagement with technology providers
- Technical and economic modelling of capture and utilisation systems including mass and energy balances CAPEX/OPEX estimates and sensitivity analysis on CO₂ and hydrogen pricing.
- Local market assessment to identify potential CO₂ emitters and offtakes within 30 miles of candidate biomethane or EfW sites.
Development roadmap defining next steps funding opportunities and conditions required to progress to demonstration phase.
Hydrogen Condition and Test Effects (HCATE)
The Hydrogen Condition and Test Effect (HCATE) project will investigate the effect of moisture on fatigue crack growth rate (FCGR) and the influence of loading rate on fracture toughness of API 5L X52 pipeline steel in hydrogen environments. The project will generate experimental data to improve understanding of how environmental conditions influence crack propagation behaviour and fracture resistance in pipeline steels.
Laboratory-scale testing will be conducted on representative pipeline material in air and pressurised gaseous hydrogen environments including hydrogen saturated with water and hydrogen containing trace oxygen. These conditions are intended to simulate environmental conditions that may be present within pipeline systems.
Complementary fracture toughness testing will also be conducted at different loading rates to evaluate the influence of loading conditions on fracture resistance. The results will support the development of improved pipeline integrity assessments and contribute to the evidence base required for the safe repurposing of the UK Local Transmission System (LTS) for hydrogen transport.
Non-Data Centres Large Demand Mapping
New high energy demand sites in the UK can face grid connection delays of over 10 years due to overloaded electricity networks which are struggling to keep up with growing demand. Gas networks could help bridge this gap by supplying gas-to-power solutions to support critical areas sooner. Knowing where and when demand will arise will help gas networks target investment support electricity networks in offering alternatives and allow energy users faster access to power. In this way gas networks can play a key role in getting large energy users the power they need when they need it.
TD2 Hydrogen Update
This project will deliver the first comprehensive and evidence‑based update to IGEM/TD/2 to enable its safe and consistent application to 100% hydrogen and hydrogen‑blend transmission pipelines. Current TD/2 methodologies reflect only natural gas behaviour leaving critical gaps in failure frequencies consequence modelling harm criteria and risk‑reduction approaches for hydrogen. Through a structured programme of technical analysis modelling validation against large‑scale hydrogen test data and extensive stakeholder engagement the project will develop hydrogen‑specific failure frequency tables consequence and overpressure models harm thresholds and guidance on appropriate risk‑reduction measures. These will be consolidated into a publication‑ready TD/2 Hydrogen Update Technical Suite and IGEM drafting instructions ensuring regulatory alignment and industry consensus. The outcome will provide a unified defensible framework that accelerates hydrogen network projects supports the UK’s energy transition and strengthens safety assurance across the gas sector.
BioFlex
This project constitutes a focused feasibility assessment of local biomethane market models with the objective of determining how decentralised commercial arrangements can enable increased participation from small-scale and community anaerobic digestion (AD) producers. The study will examine commercial structures regulatory considerations and stakeholder readiness associated with enabling localised trading of green gas through existing distribution networks. It will assess the interaction between market design connection approaches and consumer engagement to identify viable pathways for implementation and scale-up.
Hydrogen Rollout Assessment
This project will help WWU to understand considerations for 100% Hydrogen Rollout at a town scale to inform future activity on preparation for repurposing. Areas will be chosen which are representative of different networks housing stock and demographics which will require different approaches and engagement.
GVA and macro-economic impact of biomethane
The consultant will deliver a report demonstrating the Gross Value Added (GVA) benefits of biomethane and jobs created and/or maintained from greater biomethane generation across upstream midstream and downstream and the particular benefit provided to GB’s rural communities.
This will be a build on the Economics of Biomethane project conducted by Baringa for the Taskforce and would be expected to leverage analyses and modelling from that project as required.
This analysis is to form the basis of a compelling report making the case for greater biomethane production and injection into the GB gas networks. This report to include recommendations for the target audience which includes Government Treasury DESNZ DEFRA Local authorities etc.
This is a project being delivered in collaboration with the Green Gas Taskforce.
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.
Finding the Hidden Vulnerable Stage 2
Following on from Stage 1 of the project which assessed if a predictive model could be used to find hidden vulnerability the next stage of the project is focused on identifying customers in vulnerable situations whose heat comes from Cadent delivered gas that are missing out on the protections that the Priority Service Register (PSR) brings because they are “hidden” behind a non-domestic supply contract and may not be immediately visible through existing data sets and ways of working. The project aims to proactively identify and support hidden customers in vulnerable situations within Cadent’s network by developing a data-driven model that integrates existing datasets from different sources ensuring that they receive the support that they need in the event of an interruption to supply.
Maximising the use of a decommissioned network
This project constitutes a research study exploring innovative opportunities to repurpose decommissioned gas pipelines and associated assets to support future energy systems and critical infrastructure needs.
By exploring diverse repurposing options beyond hydrogen and carbon dioxide it is hoped that it will be possible to identify potential growth areas for gas pipeline assets that in some areas may otherwise become stranded. The study will include a review of economic viability technical feasibility and regulatory considerations for any identified options.
Green Gas Access
Green Gas Access will define tools to improve how green gas is managed across UK distribution networks supporting net-zero goals. With fossil fuels still expected to dominate the energy mix by 2050 we must ensure resilient supply and avoid capacity loss as we integrate decentralised sources like biomethane. The solution is to enable real-time network operation including dynamic supply modelling scenario planning and technology deployment. Key outcomes include: improved green gas injection control better asset use onboarding new suppliers efficiently and supporting the transition to low-carbon systems through coordinated green gas storage and power-to-gas operation.
Fixed Thermal Probe/Proxy Flow Meter
We’re developing a low-cost easy-to-install solution to measure gas flow at regulator stations. The goal is to keep the equipment as simple and non-intrusive as possible.
To measure the flow we’ll use two methods:
- One method checks how open the regulator is and the pressure difference across it to estimate the flow.
- The other uses a small sensor that creates a slight temperature change at the outlet which also helps estimate the flow.
By combining these two methods with the regulator’s technical details we aim to measure the flow with an accuracy of about ±10%.
RTN modelling- Bio Methane
The UK 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 design modelling. Cadent’s current modelling relies on outdated assumptions and lacks the granular real-time demand insight needed for modern decarbonising gas networks. Existing tools cannot capture intra-day demand variability below-7-bar network complexity or the growing impact of biomethane injections—creating risks in planning operational decisions and reinforcement strategy.
RTN addresses these challenges by delivering accurate weather-adjusted consumer-level demand modelling and integrated analysis across pressure tiers. This enhances forecasting improves biomethane integration and strengthens model validation and operational control. In the future state RTN provides Cadent with a modern data-rich and automated modelling capability that reduces unnecessary reinforcement improves customer outcomes supports the energy transition and lays the foundation for potential future use in peak-demand modelling and regulatory engagement.
This programme is leveraging the data and learning from historic projects to develop a range of novel network modelling tools that will enable bio gas designs to be informed consumer focused and optimised for localised conditions and demands.
Digital Inclusion in Rural & Vulnerable Communities Phase 1
Digital exclusion remains a significant and persistent challenge across the UK with approximately 10 million people unable to access online services due to a lack of internet connectivity digital skills or confidence. In rural and remote communities this challenge is compounded by poor infrastructure and geographic isolation. For households already identified as vulnerable the inability to receive timely communications from energy networks can have serious consequences.
Energy networks currently rely on a standard set of channels to communicate critical information such as planned outages safety alerts and emergency notifications. Letters go unread door-knocking is costly and slow SMS messages are widely distrusted and digital channels by definition exclude the very households that need the most support. No single channel reliably reaches digitally excluded consumers at speed. This gap represents both a safeguarding risk for customers and a significant compliance and reputational challenge for networks operating under Ofgem’s consumer vulnerability obligations.
This project proposes a fundamentally new approach: the Message Beacon is a low-cost physical internet-free device distributed to households to alert customers that an important energy network message is available to be read. The notification signal is received via Bluetooth or NFC from a nearby mobile asset (such as a van field engineer or bin lorry) and is represented on the Message Beacon using a flashing LED. The customer taps the Message Beacon with an NFC-enabled smart device to display the energy network message. No internet connection is required in the home and no digital literacy is assumed. The Message Beacon brings the message to the person rather than expecting the person to come to the channel.
This project aims to design and validate the Message Beacon concept establishing the foundational design user research and hardware groundwork that will enable a full real-world pilot in Phase 2.
Phase 1 will deliver four discrete tangible outputs each meaningful in its own right and each a direct input into the Phase 2 build:
- Front-of-House Initial Design: User journey maps covering how different household types will encounter and use the Beacon; initial design of the physical form factor LED notification NFC tap-to-read interaction and message display; first-round prototype tested with participants; all design decisions documented with rationale grounded in user research.
- Back-of-House Initial Design: Research with network comms teams on message types triggers and operational workflow; user journey maps for network staff; initial interface designs for message creation household management and read-receipt reporting; analytics framework for Phase 2 evaluation.
- Technical End-to-End Flow: Full system architecture from message creation through transmission to NFC tap and display in the home; hardware and software brief with security model; assessment of NFC BLE and battery architecture; basis for the Phase 2 development brief.
- Prototype Plan and Experimental Builds: Hardware technical diagrams; sourced components; initial experimental Beacon devices demonstrating the core NFC BLE and LED interaction; manufacturing and cost assessment for Phase 2 production run of 30–50 units.
Technology Readiness Level (TRL)
- Start TRL: 2 (Technology concept formulated)The Message Beacon has been identified through prior research as the strongest candidate solution but exists only as a concept. No integrated system design user-tested interface or functioning hardware has been produced.
- End TRL: 4 (Technology validated in laboratory environment)By the end of Phase 1 the core system architecture will have been designed and validated experimental Beacon hardware will have been built and tested and both the front-of-house and back-of-house interfaces will have been prototyped and tested with real users in controlled settings.