REG - Powerhouse Energy Gp - Feedstock Testing Unit update

Powerhouse EnergyAnnouncement

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RNS Number : 7594Z  Powerhouse Energy Group PLC  18 September 2025

 

18 September 2025

 

The information contained within this announcement is deemed to constitute
inside information as stipulated under the retained EU law version of the
Market Abuse Regulation (EU) No. 596/2014 (the "UK MAR") which is part of UK
law by virtue of the European Union (Withdrawal) Act 2018. The information is
disclosed in accordance with the Company's obligations under Article 17 of the
UK MAR. Upon the publication of this announcement, this inside information is
now considered to be in the public domain.

 

Powerhouse Energy Group plc

("Powerhouse" or the "Company")

 

Feedstock Testing Unit update

 

Powerhouse Energy Group plc (AIM: PHE), a company pioneering integrated
technology that converts non-recyclable waste into low carbon energy with a
revenue generating engineering consulting division ("Engsolve"), is pleased to
provide the following update on its Feedstock Testing Unit ("FTU"). In the six
months since the Company held its Capital Markets Day, the PHE team has been
actively testing, validating, and refining the DMG system. Initial trials,
using raw plastics, have delivered excellent results that were consistent (and
in certain cases, better) with both our model predictions and previous
small-scale tests.

Testing has now progressed to mixed plastics in raw and "real" waste forms
which have also aligned well with our models and, encouragingly, showed
slightly higher hydrogen content in the resulting syngas than anticipated. The
next phase of testing involved improving the efficiency of the downstream
systems and optimising the DMG temperature profile.

Following these tests, PHE has installed a custom made and designed internal
plate system within the furnace, developed using Computational fluid dynamics
(CFD) modelling work carried out in collaboration with Manchester University.
Upon installation, and repeating the earlier tests, the Company recorded
improved heat retention within the kiln and a significant reduction in residue
carryover to the gas clean-up system. This design will now be implemented into
all future DMG units.

With the design enhancements, the R&D team has also tested solid recovered
fuel (SRF) and mixed plastics (mixed in accordance with the specification
provided for the National Hydrogen Australian project). The SRF results were
as expected, given this type of feedstock lends itself more towards producing
a syngas to power, or a precursor syngas product rather than a for a Hydrogen
project. The mixed plastics however, provided a repeatable Hydrogen content in
the syngas at the top end of the model prediction. This not only reinforces
our confidence in the currently published figures, but also indicates that,
with the appropriate feedstock mix, PHE has the potential to exceed them.

In this regard, as an example, PHE has previously stated that from a 40 Tonnes
per Day (TPD) mixed plastic input that the DMG would produce approx. 2.5 to
3.0TPD of Hydrogen. The Company is now confident that between 3.0 and 3.5 TPD
can be produced at 99.999% purity with a higher output possible if producing
to the lower purity ISO road transport standard.

While the testing to date has been extremely positive, the team continues to
optimise the commercial system design through ongoing FTU testing. This
includes running various "real-life" waste streams for potential clients and
experimenting with different operating conditions to tailor syngas composition
for applications beyond hydrogen production. In parallel, the testing is
informing efforts to valorise the residue stream, further enhancing the
overall commercial viability of the DMG offering.

 

Paul Emmitt, Chief Executive Officer of PHE, commented:

 

"The progress we've made with our Feedstock Testing Unit over the past six
months is a testament to the ingenuity and dedication of the Powerhouse team.
The validation of our DMG system with both native and mixed waste
plastics-especially the higher-than-expected hydrogen yields-reinforces our
confidence in the technology and its commercial potential. The design
enhancements, developed in collaboration with Manchester University, mark a
significant step forward in efficiency and scalability. As we continue to
optimise the system and explore diverse feedstocks, we are not only advancing
our hydrogen production capabilities but also unlocking new pathways for
sustainable energy and waste valorisation."

 

-ENDS-

 

 

For more information, contact:

 

 Powerhouse Energy Group Plc
 Paul Emmitt, CEO                                           +44 (0) 203 368 6399
 Ben Brier, CFO

 Strand Hanson Limited (Nominated & Financial Adviser)
 Ritchie Balmer / Rob Patrick / James Harris                +44 (0) 207 409 3494

 SP Angel Corporate Finance LLP (Broker)
 Stuart Gledhill / Adam Cowl                                +44 (0) 20 3470 0470

 Tavistock (Financial PR)                                   +44 (0) 207 920 3150
 Simon Hudson / Nick Elwes                                  powerhouse@tavistock.co.uk (mailto:powerhouse@tavistock.co.uk)

 

About Powerhouse Energy Group Plc

Powerhouse Energy has developed a process technology which can utilise waste
plastic, end-of-life-tyres, and other waste streams to convert them
efficiently and economically into syngas from which valuable products such as
chemical precursors, hydrogen, electricity, heat and other industrial products
may be derived. PHE's process produces low levels of safe residues and
requires a small operating footprint, making it suitable for deployment at
enterprise and community level.

 

PHE also incorporates Engsolve Ltd, which is a revenue generating business
offering Engineering Services across all sectors, with speciality services in
the development of new technologies and clean energy.

 

For more information see www.phegroup.com (http://www.phegroup.com)

 

 

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