Post by Donato Azzarone

Deep geothermal for heat is taking a concrete step forward in Vienna. ♨️ At the Aspern pilot project, OMV and Wien Energie have successfully completed the geothermal test phase, with results clearly above expectations. Formation water was produced from around 3,000 metres depth and reinjected in a closed-loop test. The measured temperature reached 104°C, compared with the expected 100°C, while available flow rates support an increase in expected thermal output from 20 MWth to around 25 MWth. This matters because the project is designed to supply district heating directly — providing climate-neutral heat and hot water for up to 25,000 Viennese households, around 5,000 more than initially planned. Integrated model: local renewable heat, integrated into an existing district heating network, with a replicable industrial setup. Up to 7 plants are planned, with a combined potential of around 200 MWth. Construction of the surface plant is expected to start in 2027, with commissioning planned for 2029. A strong example of geothermal as urban heat infrastructure: local, baseload, renewable and scalable. 🌍🔥 #GeothermalEnergy #DeepGeothermal #DistrictHeating #RenewableHeat