About Powerhouse Energy Group plc Powerhouse, the sustainable hydrogen company, has developed a proprietary process technology - DMG® - which can utilise waste plastic, end-of-life-tyres, and other waste streams to efficiently and economically convert them into syngas from which valuable products such as chemical precursors, hydrogen, electricity and other industrial products may be derived. Powerhouse's technology is one of the world's first proven, distributed, modular, hydrogen from waste (HfW) process.