We are Launching the Expansion of the Biogas Storage Facility at the Wastewater Treatment Plant in Słupsk
(23.07.2025)
On July 22, 2025, “Wodociągi Słupsk” Sp. z o.o. signed an agreement for the expansion of the biogas storage facility coupled with a cogeneration unit and a biogas installation linking the digestion structures with the storage facility and the cogeneration unit. The Contractor selected through a public procurement procedure is the company HUSAR Budownictwo Inżynieryjne S.A. based in Włocławek.
This is another initiative included in the project entitled “SBI Słupsk Bioenergy Island – Development of Energy Competencies of the SBC Cluster Coordinator,” covered by non-repayable support under the National Recovery and Resilience Plan (KPO), Part B: investment support for energy communities, Activity B.1: Demonstration investment projects implemented by energy communities.
Under the signed agreement, the Contractor will expand the biogas storage facility coupled with the cogeneration unit, including the construction of a new membrane biogas tank with a capacity of at least 2,500 m³ along with the necessary fittings and devices in the immediate vicinity of the existing 1,200 m³ tank operating with the WWTP’s CHP system. Furthermore, the contract includes the expansion of the biogas network connecting the digestion installations with the storage facility and the cogeneration unit – the existing biogas network will be extended by adding new pipelines with a length of approx. 500 m along with drainage and control fittings.
The planned increase in biogas production from the two existing bio-waste digestion installations, combined with the necessity to adapt the operation of the cogeneration unit (sequential operation) to the requirements of balancing unstable RES sources, demands an increase in the storage volume of the fuel that drives the CHP. Based on an analysis of the grid balancing needs, an expansion of the biogas storage capacity to approx. 10 MWhe was designed, which requires increasing the existing volume by at least 2.5 thousand Nm³. Expanding the fuel storage volume will enable the unit to operate at a maximum capacity of 2 MWe for approx. 6 hours (taking current biogas production into account), ensuring energy security throughout the entire planned balancing area.
The planned completion date of the agreement is July 22, 2026.
