Solvay to phase out coal for energy use in Rheinberg soda ash .
WEBMay 5, 2021 · Solvay is announcing plans to completely phase out the use of thermal coal at its soda ash plant in Rheinberg, Germany. After commissioning a first biomass boiler, which will go into operation in May 2021, Solvay is unveiling plans to build a second biomass boiler, which will complete the thermal coal phaseout by 2025 and make .