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, rest of Europe, and internationally. The company offers UPS and solar battery storage products; and solutions for renewable energy storage systems based on hydrogen. It provides its products for various market segments, including stationary and mobile applications, rail, and maritime; power supply systems for emergency power systems; heavy and light duty vehicles; rail machines and passenger trains; ships and boats; and off-road applications, such as material handling and construction machines. 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 is a subsidiary of SFN Cleantech Investment Limited.