Carbon neutrality guides the development of Marioff’s Kerava factory

For Marioff, carbon neutrality is not a temporary campaign, but a long-term goal rooted in the company’s culture. Its foundations reach back to a time when sustainability was only beginning to gain widespread attention in the industrial sector. In many ways, Marioff’s Kerava factory has been ahead of its time.

“We didn’t start this work recently – our first energy audits were carried out more than ten years ago together with Motiva,” says Marioff’s Operations Director Anne Kauppila, who also oversees the company’s sustainability efforts.

Our old owner’s Carrier’s target of carbon-neutral operations by 2030 has guided development across the group before July 2024, but Marioff has progressed even faster. All electricity used at the Kerava factory comes from carbon-free sources, and a major heating system upgrade at the beginning of 2025 pushed the work significantly forward.

“We moved away from district heating as our primary heat source and switched to air-to-water heat pumps. It has been a major improvement both in terms of emissions and energy efficiency,” Kauppila explains.

Next, the factory plans to replace the diesel generator currently used for testing with a cleaner energy solution and fully electrify the remaining forklift fleet.

Marioff’s sustainability efforts also strengthen business performance. The factory has reduced its energy consumption compared to peak years, and its reliance on fossil energy has decreased substantially.

“Energy consumption is one of our cost factors. When we operate more efficiently, it directly improves our competitiveness. For example, the new heating method has proven not only environmentally friendly but also economically sound,” Kauppila says.

By not being tied to fossil energy sources, the factory is less vulnerable to fluctuations in energy market prices—and better prepared for future requirements.

Carbon neutrality is visible not only in Marioff’s goals but also in employee engagement.

“It’s important that your work feels meaningful and that we operate responsibly. When you know that things are done right, it also feels good to come to work,” Kauppila notes.

Marioff’s 40-year history is built on innovation and proven quality. The progress at the Kerava factory is a continuation of that legacy—concrete actions that support the company’s success for decades to come.

“This is not an extra cost or burden for us. It’s simply about understanding what needs to be done. And many of these solutions make financial sense as well,” Kauppila concludes.

The story of the Kerava factory demonstrates how the “Protect what matters most” mindset is reflected in Marioff’s own operations. Sustainability initiatives support not only the environment but also the company’s ability to build the next 40 years on just as strong a foundation as the past four decades.