Stora Enso’s paper mill to provide renewable district heating in Germany
Excess heat from the industrial processes at Stora Enso’s Maxau paper mill in the south-west of Germany, will be used to provide renewable, biomass-based district heating for the city of Karlsruhe.
A new, approximately two-kilometre-long connection pipeline will transfer the heat from the mill to an existing pipeline that links up the local refinery with the municipal heating grid. The local district heating supplier Stadtwerke Karlsruhe will start the construction of the pipeline in late 2020, aiming for completion by the end of 2022.
More than 80% of the fuel used at Maxau Mill is biomass-based. In addition, a new steam turbine, to be taken into use at the mill during 2020, will further increase the potential of combined heat and power production at the mill. Thanks to these factors, the city of Karlsruhe and Maxau Mill expect to cut 10 000 tonnes of CO2 emissions annually.
Maxau Mill already sells excess heat to an industrial partner and with the new pipeline, it will join the thirteen Stora Enso mills in Finland, Sweden, Germany, and Austria that sell heat to local district heating systems.









