Proton Motor Power Systems Plc, together with its subsidiaries, designs, develops, manufactures, and tests fuel cells and fuel cell hybrid systems, and related technical components in the United Kingdom, Germany, and rest of Europe. The company offers HyModule fuel cell system solution; HyFrame, a modular and universally applicable hydrogen fuel cell system for stationary applications; customized fuel cell system solutions, including HyScale, HyRange extender, HyShip, and HyRail; and turnkey solutions, such as HyShelter and HyCabinet. It provides fuel cell systems for stationary applications comprising emergency power systems for various industries, including telecommunications, road tunnels, or railway switching stations; and fuel cell drive system for mobility sectors, such as heavy duty vehicles, trains, and maritime vessels. The company was formerly known as Proton Power Systems plc and changed its name to Proton Motor Power Systems Plc in December 2019. The company was incorporated in 2006 and is headquartered in London, the United Kingdom. Proton Motor Power Systems Plc operates as a subsidiary of SFN Cleantech Investment Ltd.