Construction underway for geothermal heating plant in Sochaczew, Poland
Sochaczew, Poland (source: WScnin, CC BY-SA 4.0, via Wikimedia Commons)
Carlo Cariaga
24 Feb 2026
Dismantling of the old thermal plant in Sochaczew, Poland has started to give way to the construction of the new geothermal heating plant.
The old thermal plant of Przedsisbiorstwo Energetyki Cieplnej Sochaczew (PEC Sochaczew / Thermal Energy Company) in Sochaczew, Poland is now being dismantled to make space for the new geothermal heating plant. Construction of the facility is expected to be completed by the end of 2026.
The future geothermal heating network in Sochaczew will be served by the new geothermal heating plant that will go up at the site of the former PEC heating plant at al. 600-lecia 70. Demolition of the partition walls and old foundation of the building are now ongoing to make space for two high-temperature boilers and two absorption heat pumps, each with a capacity of 2.5 MWth. The construction contract was awarded to Poznan-based Envirotech in mid-2025.
The two heat pumps will be connected to the 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.
Based on estimates, the geothermal resources provide an output of 39,000 GJ annually, meeting approximately 40% of the annual heat demand of the newly constructed district heating system. This will substantially reduce the use of gas for heating by PEC and avoid 3700 Mg of CO2 emission per year. Work is also underway to upgrade the heating substations connected to the network.
Source: e-Sochaczew and CIRE.pl
