H100 Fife
H100 Fife is a groundbreaking green hydrogen project led by SGN. Its objective is to decarbonise domestic gas usage for up to 300 properties in the Buckhaven and Denbeath areas of Levenmouth, located in Fife, Scotland.
H100 Fife in brief
The H100 Fife project will launch in Autumn 2025 and run until 2027.
Get an understanding of the key points and milestones for H100 Fife from this helpful infographic.
How the H100 Fife trial will work
The homes taking part in the H100 Fife trial will receive green hydrogen generated by renewable energy, using a local offshore wind turbine to power the electrolyser.
This is one of the world's first domestic green hydrogen gas networks with enough storage to successfully deliver 100% hydrogen to each home.
Guaranteeing reliable supply and fair billing
SGN has been working closely with Xoserve and the wider gas industry to devise a billing and metering solution that’s fair for participating customers.
To minimise disruption, suppliers and their customers will pay the same standing charge and price per unit for hydrogen as they would for natural gas. This means costs won’t increase during the H100 Fife trial. Customers can remain with their existing suppliers or switch if they wish.
During the project, Xoserve will notify suppliers when customers enrol on the H100 Fife trial, or they request a switch.
Xoserve’s service role
Xoserve has supported the H100 Fife trial with report development and service changes to the Gemini and UKLink systems.
25 February 2023 - Three new reports are created specifically for the H100 Fife trial, to support shippers and network operators. See XRN5298.
23 March 2025 - An amended calorific value (CV) tolerance range is introduced within the Gemini system to accommodate the changing gas composition as hydrogen is blended into the gas network. See XRN5635.
31 July 2024 - Data Discovery Platform (DDP) Hydrogen Dashboards are adapted to show portfolio information for MPRNs taking part in hydrogen trials, including: change of tenant, change of supplier, AQ change, meter read submission and more.
13 April 2022 - Support in the development of MOD0799, a UNC modification raised by SGN to enable the use of 100% hydrogen for the H100 Fife project; solutions provided for the billing and impact in the CDSP.
27 June 2025 - A new allowable value of M for all metering and RGMA file flows is added for the introduction of the new thermal mass H100 Fife Hydrogen Meter. See XRN5846.
H100 Fife’s role in decarbonising Britain’s gas industry
Projects such as H100 Fife offer integral research into the decarbonisation of Britain’s energy system. These findings could help shape policy frameworks, such as the Government’s Hydrogen Strategy, and inform decisions about the role of hydrogen in decarbonising home heating.
While H100 Fife focuses on supplying domestic hydrogen within a localised gas network, its findings could have implications for the wider industry. This includes the feasibility and adaptation requirements of existing gas infrastructure for hydrogen transport and distribution.
The project's data on safety, cost and user consumption could also inform how hydrogen gas is integrated with other renewable technologies like wind and solar. This is a valuable contribution to helping the UK achieve its net zero targets.
Join our hydrogen working group
Our Hydrogen Information Sharing Group (HISG) is designed to facilitate full technical discussion and knowledge sharing related to hydrogen trial projects as they progress.
We are currently hosting an HISG meeting each month with SGN, to discuss H100 Fife. If this is something you would like to be a part of, please email us.
Potential impacts on the gas industry following H100 Fife
The data collected from the H100 Fife trial will be used to understand the investment required in decarbonising domestic heating. It will also highlight any changes the gas industry needs to make if hydrogen is incorporated into the domestic energy landscape.
The table below explains some of the potential impacts to the gas industry of introducing hydrogen to the network.
| Stakeholder | Potential impact |
| Suppliers |
May influence future supply availability and the scale and location of hydrogen injection points into the network. Impact on capacity planning for networks and sourcing strategies for suppliers, including renewable partnerships. |
| Storage | Consideration of existing or new infrastructure to manage supply and demand fluctuations. |
| Transmission | Consideration of the potential scope and timelines for infrastructure upgrades to ensure the safe and efficient transportation of hydrogen. |
| Distribution | Distributors will need to assess the implications for their existing infrastructure, including potential upgrades, replacements or the development of new hydrogen-specific networks in certain areas. |
| Xoserve |
Adapt billing systems and processes to accurately account for hydrogen's different calorific value. Facilitating data exchange and framework adaptation for multiple gases. |
Helpful material
We’ve created a range of materials to tell you more about the project and help you confidently answer queries on this topic.
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Xoserve H100 Fife infographicOur infographic explains some of the key points and milestones for H100 Fife.
PDF, Last Updated 15/09/2025, 1.4 MB
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Deemed Terms for Suppliers
Deemed terms for the provision of meter services relating to the H100 Fife hydrogen trial project, between SGN Commercial Services Limited and each gas supplier at an H100 supply meter point.
PDF, Last Updated 19/12/2024, 556.9 KB
Get in touch
If you want to know more about the project, please email us at decarbonisation@xoserve.com.