Polska Grupa Biogazowa has completed the expansion of its biogas plant in Dzierżki by adding a new 0.5 MW cogeneration module. The investment will increase the plant’s capacity to produce electricity and heat, while also expanding local technological and energy infrastructure.
On 11 June 2026, Polska Grupa Biogazowa completed the expansion and modernisation of the biogas plant in Dzierżki, including the installation of an additional 0.5 MW cogeneration module.
According to Patryk Jóźwiak, Management Board Member and Chief Operating Officer at PGB, the investment represents another stage in the development of modern biogas infrastructure and in improving the efficiency of existing installations.
“The expansion of the biogas plant in Dzierżki will increase its capacity to produce electricity and heat, as well as expand the technological infrastructure of the facility. We are consistently investing in solutions that support the development of renewable energy sources and local energy infrastructure,” said Patryk Jóźwiak.
“The project to expand the biogas plant in Dzierżki fits perfectly into the concept of distributed energy, strengthening residents’ resilience in crisis situations. This is extremely important for the development of energy security for the local community and the entire Podlaskie region,” said Michał Gąsowski, Deputy Voivode of Podlaskie.
A broad package of infrastructure and technology works
The scope of the investment included a wide range of infrastructure and technological works. As part of the expansion, a new 0.5 MW CHP module was built, along with an expanded biogas treatment station and an engine room equipped with digestate pumps and a tubular heat exchanger. A new higher-capacity biogas flare was also installed, together with a fire-protection retention tank, a technical road and manoeuvring areas.
“Good cooperation with local authorities and the community was very important to us. From the beginning of the investment, we maintained an open dialogue with the local government and residents, which allowed us to carry out the successive stages of the project efficiently and build mutual trust. Investments of this kind develop best where they are implemented in partnership with the local environment and respond to the real needs of the region. Teamwork was also of great importance,” said Mariusz Hryc, Regional Biogas Plant Manager at PGB.
Electricity and heat production to increase significantly
Following the expansion, the biogas plant in Dzierżki will have a total electrical capacity of 1.498 MWe and a thermal capacity of 1.621 MWt. Planned annual electricity production will amount to 12,466 MWh, compared with the previous 8,314 MWh per year. Heat production will increase to 13,489 MWhth annually, equivalent to 48,559 GJ, compared with the previous 8,996 MWhth, or 32,384 GJ per year.
An important element of the project is also the construction of a heat connection to a nearby pig breeder. Under the assumptions of the project, the recipient will collect up to 3,500 GJ of heat annually.
One of the key components of the investment is a new digestate tank with a usable capacity of 13,500 cubic metres. The monolithic reinforced concrete tank with a membrane roof is one of the largest facilities of its kind in Poland.
The liquid substrate tank was also modernised, as were other tanks, where new membrane roofs were installed, along with cleaning and technical inspections. Three exits from the municipal road were also built: two for the new part of the expanded installation and one modernised exit near the new hall with the heat node. The investment is an important element in the development of local energy infrastructure and cooperation with the local community.
Local agriculture and renewable energy
“I am very pleased with every investment carried out in the Poświętne municipality, especially projects related to renewable energy sources. The expansion fits the agricultural character of the municipality, creating a natural synergy between local agriculture and modern energy. Digestate is also important, as it is valued and used by farmers. Energy security is important for the local government as well. Distributed energy sources, such as biogas plants, increase the resilience of local communities and strengthen the stability of the energy system. It is also proof that the Polish countryside can not only produce food, but also actively participate in the energy transition,” said Mariusz Gołaszewski, Mayor of the Poświętne municipality.
The expansion of the biogas plant in Dzierżki increases the production capacity of the installation and strengthens local energy infrastructure. The project is part of Polska Grupa Biogazowa’s activities related to the development of modern renewable energy sources and the improvement of the efficiency of existing biogas installations.
Source: CEO.com.pl
