26 January 2023

Proton Motor Power Systems plc

("Proton" or the "Company")

New order from UMSTRO GmbH

Proton Motor Power Systems plc (AIM: PPS), the designer, developer and producer of fuel cells and fuel cell electric hybrid systems with a zero-carbon footprint, is pleased to announce that it has received an order from UMSTRO GmbH ("UMSTRO") for 18 "HyModule® S8" hydrogen fuel cell systems.

The HyModule® S8 system is an emission-free high-tech product from the Company's Hy-brand portfolio for stationary applications and will be integrated by UMSTRO into various projects for use in emergency power and combined heat and power applications.  Of the eighteen systems ordered, two systems of 8.4kW each are intended for the municipal housing company Euskirchener Baugesellschaft mbH, with which UMSTRO is developing a new energy self-sufficient multi-family house. An additional ten units are intended for use as decentralised and decarbonised energy supply solutions and the remaining six systems are to be produced for stock.

UMSTRO (www.umstro.com) is a specialist in modular energy cells for sustainable power generation from renewable energies with state-of-the-art hydrogen storage solutions and an existing customer of the Company. In 2021, Proton manufactured a HyModule® S8 system for integration into UMSTRO's innovative energy trailer, formally known as the "Mobile Solar FuelCell Aggregate".

The Company anticipates that the systems will be provided to UMSTRO throughout 2023 and into 2024.

For further information:

About Proton Motor Fuel Cell GmbH

Proton Motor has more than 20 years of experience in Power Solutions using CleanTech technologies such as hydrogen fuel cells, fuel cell and hybrid systems with a zero carbon footprint.  Based in Puchheim near Munich, Proton Motor offers complete fuel cell and hybrid systems from a single source - from the development and production through the implementation of customized solutions.  The focus of Proton Motor is on back-to-base, for example, for mobile, marine and stationary solutions applications.  The product portfolio consists of base-fuel cell systems, standard complete systems, as well as customized systems.

Proton Motor serves IT, Telecoms, public infrastructure and healthcare customers in Germany, Europe and Middle East with power supply solutions for DC and AC power demand.

Proton Motor Fuel Cell GmbH is a wholly owned subsidiary of Proton Motor Power Systems plc. The Company has been quoted on the AIM market of the London Stock Exchange since October 2006 (code: PPS).