Malteries Franco-Suisses, Boortmalt group

Heat customer introduction 



  •  Boortmalt Malthouse Group, Europe’s second largest malt producer
  • 160,000 tonnes of malt produced in a year
  • Operating 24/24 365d/year


Principle of solar thermal integration


  • Preheating of air for malt drying
  • Integration of water/air exchangers in one of the site’s kiln
  • Fossil fuel saved: gas


Key innovation


  • Solar heat integration into an already energy-optimized industrial drying production line
  • Project complementarity with the heat recovery systems already in place and the biomass boiler installed in 2012


Project funded by 



2,200 tonnes

of CO2 emission avoided per year

Project key figures

September 2020

Performance tests initiation target date

14,252 m²

solar thermal collector area on trackers

3,000 m³

hot water storage volume

about 8,000 MWH

expected annual production

Industry, Project