Director Dealings

Proton Power Systems plc

("Proton" or the "Company")

Director Dealings

The Company has been informed that further to the announcement on 20 June 2017, Achim Loecher, a non-executive director of Proton, has yesterday sold 176,396 new ordinary shares of 1 pence each in the Company ("New Ordinary Shares") at a price of 2.75 pence per New Ordinary Share.

As a result of this transaction Achim Loecher holds 10,000 Ordinary Shares representing 0.0016 per cent of the Company's issued share capital and options over 9,650,000 Ordinary Shares.

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About Proton Motor Fuel Cell GmbH

Proton Motor is an expert in Power Solutions using CleanTech technologies like industrial fuel cells, fuel cell and hybrid systems with more than 20 years of experience in this sector. 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. In addition to power supply, SPower also offers solutions for Solar Systems as well as a new product line for Solar Energy Storage.

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