Construction of the geothermal heating plant in Sochaczew, Poland is progressing well, with only finishing touches remaining and two absorption heat pumps and high-temperature boilers already delivered on site. This follows the dismantling of the old thermal plant and the start of construction of the new heating plant which was reported earlier this year.
As explained by Krzysztof Rosikiewicz, construction manager at Envirotech, explains, the two 2.45 MWt heat will extract geothermal water from the production well and increase its temperature to 65 ºC before feeding it to the district heating network. In the event of very low ambient temperatures, the high-temperature boilers will be used to supply complementary heat. Through this setup, about 40% of the heat produced in the heating plant will come from renewable sources.
The system will be connected to two geothermal wells that were drilled in the city from 2018 to 2024. The first research well, GT-1, in Sochaczew was drilled at Okrezna Street thru a PLN 10 million subsidy. The second well geothermal well, GT-2, was drilled by Exalo Drilling in 2024 to a depth of 1620 meters. Testing of the well indicated an outlet temperature of 44.5 °C, a flowrate of 184 m3/hour, and good injectivity. Drilling of the second well and the construction of the heating plant is supported by a PLN 62 million (USD 15.63 million) funding that the city received from the National Fund for Environmental Protection and Water Management (NFOSiGW) back in 2023.
Rosikiewicza adds that construction is almost finished, and the project will soon commence to the technological work. This will involve the installation and testing of equipment including water pumps, valves, filters, and pipelines. Network connections are also being constructed simultaneously to connect the existing heating systems into a single system. Excavation work is ongoing at various parts of Sochaczew. Overall, about 50% of the work for the entire project has been completed.
Source: Miasto Sochaczew
