RCS - Senior PLC - Senior in Conscious Aerospace-led HAPPS Consortium

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RNS Number : 6885H  Senior PLC  17 November 2025

PRESS RELEASE

Senior to be part of Conscious Aerospace led HAPPS Consortium to deliver
innovative hydrogen fuel cell powertrain

17 November 2025

Senior plc ("Senior" or the "Group"), an international manufacturer of high
technology components and systems, is today announcing that it has joined the
Conscious Aerospace-led Hydrogen Aircraft Powertrain and Storage System
("HAPSS") consortium.

HAPSS is the largest project within the Dutch Government led 'Luchtvaart in
Transitie' (Aviation in Transition) programme and is focused on the
accelerated introduction of next generation, sustainable aviation solutions.
 The programme focuses on the development of breakthrough technologies for
fuel efficient and zero-emissions aircraft development, along with associated
long-term research and adjacent activities.

The HAPSS consortium has received confirmation of €73m of funding from the
Dutch National Growth Fund via the Dutch Ministry of Infrastructure and Water
Management.  HAPSS aims to fly a fully certifiable zero emissions liquid
hydrogen propulsion system and will retro-fit a Dash 8-300 regional aircraft
with its pioneering hydrogen fuel cell propulsion system.

Senior will participate in the HAPSS consortium through the, recently opened,
Senior Innovation Centre in South Wales.

Senior will be a key consortium partner, particularly within the HAPSS'
Thermal Management System sub-group, applying its fluid conveyance and thermal
management ("FCTM") expertise to design, develop and manufacture the
innovative heat exchanger and fluid conveyance products required to cool the
entire propulsion system.

Being part of the HAPSS consortium further demonstrates Senior's Purpose to
helping engineer the transition to a sustainable world for the benefit of all
our stakeholders.

Launie Fleming, President of Aerospace Division, Senior plc said:

"Senior offers pivotal technologies for environmental efficiency and emissions
reductions.  The HAPSS project is an excellent opportunity for Senior to push
boundaries and deliver an innovative Thermal Management System solution for
this ground-breaking zero emissions aircraft.  We look forward to
contributing to the consortium and collaborating with Conscious and the other
parties involved."

Erik Geertsema, CEO of Conscious Aerospace said:

"We welcome Senior as a consortium partner to design and produce the high-end
thermal management components needed for our retrofit aircraft.  With decades
of experience in fluid conveyance and thermal management, Senior has
established itself as a reliable specialist delivering to Original Equipment
Manufacturers.  International collaboration like this brings us one step
closer to emission free aviation."

END

 

For further information, please contact:

Senior plc

Gulshen Patel, Director of IR  and Corporate Communications        +44
(0) 1923 714 722

FGS Global

Richard Webster-Smith
 
+44 (0) 7796 708 551

About Conscious Aerospace

Conscious Aerospace is a Dutch aerospace company, pioneering the path toward
clean, scalable, and certified hydrogen-powered flight.  The company leads a
European consortium developing the technology for Hydrogen Aircraft Powertrain
and Storage Systems (HAPSS).  Combining proven engineering expertise with a
pioneering drive toward zero-emission flight, Conscious Aerospace bridges
today's aviation with the future of sustainable flight.  In 2025, the HAPSS
consortium was awarded €73 million in LiT (Luchtvaart in Transitie) funding,
awarded by the Dutch government to accelerate the transition toward
sustainable aviation.

As one of only a few companies of its kind with an EASA Innovation Partnership
Contract (IPC), Conscious Aerospace works closely with regulators, OEMs,
airlines, and energy partners to ensure hydrogen propulsion meets the highest
safety, certification, and performance standards.  Learn more at
www.consciousaerospace.com (http://www.consciousaerospace.com/)

About Senior

Senior is a FTSE 250 international engineering and manufacturing Group with
operations in 12 countries.  It is listed on the main market of the London
Stock Exchange (symbol SNR).  Senior's Purpose is "we help engineer the
transition to a sustainable world for the benefit of all our stakeholders".
Senior designs and manufactures high technology components and systems for the
principal original producers in the worldwide aerospace & defence, land
vehicle and power & energy markets.  Further information on Senior plc
may be found at www.seniorplc.com (http://www.seniorplc.com)

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