About Stormossen

Stormossen’s operations began through a collaboration between the City of Vaasa and the Municipality of Korsholm. They decided to establish the company at the end of 1984. Ab Avfallsservice Stormossen Jätehuolto Oy was registered on March 28, 1985.

Today, the company is owned by six municipalities: Isokyrö, Korsnäs, Maalahti, Korsholm, Vaasa, and Vörå, with a combined population of approximately 108,000 residents. Stormossen currently employs around 50 people. In 2024, the company’s turnover was 17.2 million euros.

Stormossen’s operations are a true example of a circular economy. We process biowaste and sludge to produce compost soil and biogas for transportation. The result is a smart, climate-friendly cycle of nutrients and energy.

High Recovery Rate

In 2024, the recovery rate of municipal waste in Stormossen’s operating area exceeded 99%. Material recovery plays a central role in the company’s operations. The goal, in accordance with the EU directive, is to recycle 65% of municipal waste as material by 2035.

Stormossen operates eleven recycling stations in its owner municipalities, about half of which are self-service stations open every day. The number of visitors to the recycling stations continues to grow.

Recycling Mall Minimossen

Recycling Mall Minimossen is Finland’s first entrepreneur-driven, sustainable and inspiring place to shop for recycled products. Opened in November 2019, Minimossen is a treasure trove of lovingly cared-for personal goods, featuring recycling shops and a café, as well as Stormossen’s first mini recycling station.

BIG Biogas

Biogas is a local, environmentally friendly, engine-friendly and affordable fuel option. The first public transport gas filling station in the Vaasa region is located in Stormossen. The Gastor transport gas filling station opened in February 2017 and the biogas to transport fuel gas refinery opened in May of the same year. A slow refuelling station for buses has been built on the same site for the City of Vaasa’s gas buses. A second public filling station opened in May 2020 on the southern entrance road to Vaasa. Together with two other waste companies, a joint biogas filling station network BIG Biokaasu was created in 2020, which today comprises nine filling stations across the country.

Compost soil for sale

Stormossen digests biowaste and sludge in bioreactors. The sludge-based digestate is distributed to farmers as fertilizer. The biowaste-based digestate is composted at the waste management center. The approved soil improvement compost is delivered to a subcontractor who mixes it into garden soil. Stormossen’s garden soil is sold through the Soraterminaali.

Mission and Vision

Mission

Stormossen handles the tasks transferred to them by the owner municipalities in a sustainable, modern, technically-efficient and cost-effective manner.

Vision

We are the development area for the circular economy.
We are at the forefront of material recycling.

Goal 2035

Carbon neutral activity.
65 % material recycling.

Company Values

Professionally

Bravely

Together

Owner municipalities

Vaasa and Korsholm were the joint founders of Stormossen. The official start of the company, took place in 1985. Stormossen is owned by six municipalities – Vaasa, Korsholm, Isokyrö, Korsnäs, Malax and Vörå. In these six municipalities live approx. 107,000 inhabitants.

 

Map of municipalities and population 2023

Waste treatment plant in Koivulahti, Mustasaari
11 waste reception stations of which 5 are self-service
1 garden waste station in Vaasa