Quadrise Plc, together with its subsidiaries, manufactures, markets, and sells emulsion fuels for use in power generation, industrial, marine diesel engines, and steam generation applications in the United Kingdom. The company produces oil-in-water emulsion-based fuels through its Multiphase Superfine Atomised Residue (MSAR) technology as a substitute for conventional heavy fuel oil; and oil-in-water emulsified synthetic biofuels through its bioMSAR technology as a substitute for biofuel. The company was formerly known as Quadrise Fuels International plc and changed its name to Quadrise Plc in March 2023.