Stora Enso has completed a €30 million investment to renew energy processes at its Heinola Fluting Mill in Finland, eliminating the use of solid fossil fuels and replacing them with renewable bioenergy.
Finalized in the last quarter of 2025 during the mill’s annual autumn shutdown, the upgrade cuts annual greenhouse gas emissions by more than 113,000 tonnes of carbon dioxide — a reduction of over 90 percent compared with previous levels, equivalent to the carbon footprint of housing for around 80,000 average Finns.
The investment is described as a key milestone in Stora Enso’s strategy to reduce emissions from its own operations by half by 2030. The project included the construction of a new fuel receiving station and conveyor system, along with a major modernization of the site’s fluidized-bed boiler, delivered in cooperation with Finnish and international partners across civil engineering, equipment installation and boiler technology.
Project Manager Eija Liikola said the commissioning phase progressed according to plan thanks to close collaboration between suppliers and mill personnel, noting that the project also met its occupational safety and environmental performance targets.
According to Technology and Investment Manager Mikael Sillfors, the upgrade has positioned Heinola among the lowest-emission mills in its market segment while improving process stability, energy efficiency and overall competitiveness. He added that the shift to bioenergy also benefits the local community, as the mill’s district heating supply is now more climate-friendly and supports the city of Heinola’s carbon-neutrality objectives.
Heinola Fluting Mill produces high-quality fluting — or corrugating medium — for the corrugated packaging industry, mainly serving export markets. With its renewed energy infrastructure, the mill is designed to support responsible, low-emission production for fiber-based packaging customers.
Finalized in the last quarter of 2025 during the mill’s annual autumn shutdown, the upgrade cuts annual greenhouse gas emissions by more than 113,000 tonnes of carbon dioxide — a reduction of over 90 percent compared with previous levels, equivalent to the carbon footprint of housing for around 80,000 average Finns.
The investment is described as a key milestone in Stora Enso’s strategy to reduce emissions from its own operations by half by 2030. The project included the construction of a new fuel receiving station and conveyor system, along with a major modernization of the site’s fluidized-bed boiler, delivered in cooperation with Finnish and international partners across civil engineering, equipment installation and boiler technology.
Project Manager Eija Liikola said the commissioning phase progressed according to plan thanks to close collaboration between suppliers and mill personnel, noting that the project also met its occupational safety and environmental performance targets.
According to Technology and Investment Manager Mikael Sillfors, the upgrade has positioned Heinola among the lowest-emission mills in its market segment while improving process stability, energy efficiency and overall competitiveness. He added that the shift to bioenergy also benefits the local community, as the mill’s district heating supply is now more climate-friendly and supports the city of Heinola’s carbon-neutrality objectives.
Heinola Fluting Mill produces high-quality fluting — or corrugating medium — for the corrugated packaging industry, mainly serving export markets. With its renewed energy infrastructure, the mill is designed to support responsible, low-emission production for fiber-based packaging customers.
Stora Enso is a global provider of renewable materials, developing and producing fiber-based products for packaging, biomaterials, wood construction and paper markets. The company focuses on replacing fossil-based materials with renewable, low-carbon alternatives across industrial value chains. Stora Enso operates production sites and sales offices worldwide, with significant operations in Europe and the Nordic region.
Source: Stora Enso
