REG - EnergyPathways PLC - Cooperation Agreement with Siemens Energy

EnergypathwaysAnnouncement

19/11/2025 07:00

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RNS Number : 1476I  EnergyPathways PLC  19 November 2025

19 November 2025

EnergyPathways plc

 

("EnergyPathways" or the "Company")

 

Cooperation Agreement with Siemens Energy for Developing Compressed Air Energy
Storage and Hydrogen Power Systems

 

EnergyPathways (AIM: EPP), the UK energy transition company, is pleased to
announce that it has signed a non-binding cooperation agreement (the
"Agreement") with Siemens Energy Global GmbH & Co. KG ("Siemens Energy")
for the development of long-duration energy storage (LDES) systems based on
Compressed Air Energy Storage (CAES) technology, integrated with
hydrogen-compatible power systems.

The Agreement outlines a global framework for collaboration on the development
and possible delivery of a Compressed Air Energy Storage (CAES) system to
effectively utilise excess offshore wind or excess green power that could be
deployed across a variety of locations worldwide. Siemens Energy is a leading
global energy technology and engineering company in this field.

Under the Agreement, EnergyPathways and Siemens Energy will form a joint
taskforce. Siemens Energy will provide its world-class engineering
capabilities and technology portfolio, while EnergyPathways will contribute
its proprietary LDES geo-storage expertise, intellectual property, and energy
projects and markets expertise.

The partnership will focus on designing and developing an efficient,
cost-competitive long-duration CAES system enabling multi-day operation and
flexible, low-carbon, power generation. The aim is to design a modular and
scalable system.

The partnership will initially target opportunities to support the UK's clean
power and energy security goals, beginning with EnergyPathways' planned MESH
project's LDES and flexible low carbon power system, in the East Irish Sea and
Cumbria.

The Agreement is non-binding and sets out the basis for entering into formal
long-term or partnership contracts that would be concluded in due course.

 

Ben Clube, CEO of EnergyPathways, said:

 

"This cooperation agreement with Siemens Energy demonstrates our commitment to
partnering with world leaders in clean energy technology and engineering.

 

"The Agreement positions the Company as a leader in the development of LDES
with multi-day power supply which can harness wasted renewable power at scale.
Affordable multi-day LDES is the missing piece of the puzzle that can deliver
affordable and reliable power supply within renewables dominated grids."

 

"In partnership with Siemens Energy, we aim to design and develop a modular
multi-day LDES system that can be scaled and deployed around the world. This
has the potential to make renewables dominated grid systems more affordable
for consumers and taxpayers.

 

"Our MESH project is planned as the first to be delivered under this
Agreement."

 

About Siemens Energy

 

Siemens Energy is a global leader in energy technology, driving the transition
to a more sustainable world by developing innovative systems for power
generation, transmission, and storage. With a comprehensive portfolio spanning
conventional and renewable technologies, the company operates in over 90
countries with around 103,000 employees and generated €39.1 billion in
revenue in fiscal year 2025.

 

About MESH

 

MESH will be a new, large scale, energy storage and decarbonisation facility
that is expected to provide a secure and dependable supply of affordable
low-carbon energy for the UK market for over 25 years.

 

The MESH integrated energy system solution comprises; large-scale Long
Duration Energy Storage ("LDES"), flexible low-carbon power capacity and
low-carbon hydrogen and graphite production with the potential to branch into
low-carbon ammonia production. MESH will connect its LDES integrated storage
system using existing infrastructure to the UK grid and nearby offshore wind
capacity to help harness value from some of the billions of pounds of the UK's
wasted wind power.

 

The MESH system is designed to capture and store curtailed offshore wind power
in offshore salt caverns as compressed air. The MESH energy storage system
combines associated large-scale hydrogen, thermal and natural gas storage
capacity in geo-storage features (the salt caverns). During periods of low
renewable energy availability, the LDES stored energy resources will be
utilised to generate low-carbon flexible power for the UK's grid via
compressed air expansion, thermal energy and hydrogen-compatible gas turbine
systems to generate electricity.

 

The MESH facility will also produce affordable low-carbon hydrogen using
methane pyrolysis technology for which EnergyPathways has exclusive rights of
use within the UK. The hydrogen can be used to further decarbonise the MESH
flexible power generation system using its hydrogen compatible gas turbine
system. The by-product of the MESH hydrogen production facility is a
high-grade form of synthetic graphite.

 

In addition to supplying dispatchable low-carbon electricity to the grid,
MESH-produced hydrogen can support the UK's emerging Project Union hydrogen
network, contributing to broader emissions reductions across the energy
system.

 

The MESH project is targeted to be operational by 2030, subject to government
approvals and financing, in order to contribute to the Government's 2030 Clean
Power ambitions. EnergyPathways aims to play its role in supporting the
Government in accelerating the UK's energy transition.

 

Investor Engagement with EnergyPathways

Engage with us by asking questions, watching video summaries and seeing what
other shareholders have to say. Navigate to our Interactive Investor website
here: https://energypathways.uk/ (https://energypathways.uk/)

 

 

Enquiries

 

 Investor questions on this announcement                                      https://energypathways.uk/link/y1B5le (https://energypathways.uk/link/y1B5le)
 We encourage all investors to share questions on this announcement via our
 investor hub
 EnergyPathways                                                               Tel: +44 (0)207 466 5000, c/o Burson Buchanan (Financial PR)
 Ben Clube / Max Williams

                                                                              Email : info@energypathways.uk
 Cairn Financial Advisers LLP (Nominated Adviser)                             Tel: +44 (0)20 7213 0880
 Jo Turner / Louise O'Driscoll / Sandy Jamieson
 SP Angel Corporate Finance LLP (Broker)                                      Tel: +44 (0)20 3470 0470
 Richard Hail / Adam Cowl

 

Subscribe to our news alert service: energypathways.uk
(http://energypathways.uk/auth/signup) /auth/signup
(http://energypathways.uk/auth/signup)

 

For further information on EnergyPathways visit www.energypathways.uk and
@energy_pathways on X.

 

Forward Looking Statements

This announcement contains forward-looking statements relating to expected or
anticipated future events and anticipated results that are forward-looking in
nature and, as a result, are subject to certain risks and uncertainties, such
as general economic, market and business conditions, competition for qualified
staff, the regulatory process and actions, technical issues, new legislation,
uncertainties resulting from potential delays or changes in plans,
uncertainties resulting from working in a new political jurisdiction,
uncertainties regarding the results of exploration, uncertainties regarding
the timing and granting of prospecting rights, uncertainties regarding the
timing and granting of regulatory and other third party consents and
approvals, uncertainties regarding the Company's or any third party's ability
to execute and implement future plans, and the occurrence of unexpected
events.

 

Actual results achieved may vary from the information provided herein as a
result of numerous known and unknown risks and uncertainties and other
factors.

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