Biogas plant digestate for agricultural use

The purpose of the project is to upgrade the digestate from the Ämmässuo eco-industrial center's biogas plant directly for agricultural use. Currently, biowaste is digested in the biogas plant and then composted. This investment project enables the full utilization of the biogas plant's processing capacity, reducing the amount of waste requiring composting.

Project updates

Construction work is in its final stages. Test operations will begin in July, and the facility is expected to be fully operational in August.

Picture from 26.3.2025

 

 

Previous Events

Construction work for the project has begun rapidly and is progressing on schedule. The construction is progressing as planned, with the building works being completed, with handover in December 2024 (picture above). At the same time, the machinery and piping installations continue according to the schedule.


Pictures (above) from the construction site in June and August 2024.

The contractors have been selected, and the contracts have been signed.

HSY's Board decided on the implementation of the project in connection with the selection of contractors in February 2024.

In the context of the environmental permit amendment application, the project was defined as a so-called Green Transition project. Temporary priority has been given to the processing of permits for Green Transition projects in Regional State Administrative Agencies (AVI) during the years 2023–2026.

 

Project Summary

HSY’s project to refine the digestate from biowaste for agricultural use will increase the biogas plant’s renewable energy production compared to the current level. At the same time, the environmental impact of biowaste treatment will decrease – climate emissions will be reduced as more of the treatment process takes place in enclosed facilities. In the future, digested biowaste can be utilized directly as fertilizer, reducing the need for windrow composting, which will also be more mature. The nutrients and carbon contained in the biowaste will be returned to the cycle as an organic-approved recycled fertilizer for farmers’ fields.

Financing

The total estimated cost of the investment is €14.9 million. The Ministry of the Environment will support the project with €4.36 million.

Project timeline

Construction is scheduled to begin at the end of March 2024, with completion expected by the end of 2025.