Leading international heating systems manufacturer, Viessmann, will unveil the first mass-produced, commercially available, domestic fuel cell in Europe at Ecobuild on 4-6 March. Viessmann and Panasonic have jointly developed the Vitovalor 300-P polymer electrolyte fuel cell-based micro combined heat and power system (mCHP), which goes on sale in Germany this April. By 2020, Panasonic and Viessmann expect a five-digit number of systems to be installed in Europe.