Innargi Deep: Seismic Surveys Spark Geothermal Heating RevolutionHeading: Łódź DiINNARGI Digs Deep: Seismic Surveys Spark Geothermal Heating Revolutiong Revolution
🌍 Seismic Surveys Kick Off Geothermal Exploration in Łódź
Why Łódź is Going Underground for Clean Heat
In an exciting development for climate-focused energy innovation, the Danish company Innargi has teamed up with Veolia Energia Łódź to explore the geothermal potential beneath the city of Łódź, Poland. A letter of intent signed in late 2024 formalized their long-term partnership to decarbonize the city's district heating system by tapping into renewable geothermal resources.
Mapping the Earth: What’s Happening & When
- Starting around August 11, 2025, seismic surveys are scheduled to begin across four routes covering approximately 160–186 km throughout the city.
- Specialized vibro‑trucks will send controlled vibrations—lasting roughly 20 seconds—into the ground.
- These signals are captured by geophones placed in advance along the planned routes. The data will be used to build a detailed subsurface map in just 4 weeks.
Survey operations are primarily scheduled at night, minimizing disruption to traffic and urban life. Residents might notice slight vibrations but these methods are safe for people and structures.
What This Could Mean for Łódź
- Innargi’s goal is big: up to 200 MW of geothermal heat, supplying around 15% of the city's current thermal demand from district heating systems.
- Their innovative “geothermal energy as a service” model means Innargi handles exploration, infrastructure, and operations—reducing financial risk and upfront investment for Veolia and the city.
- If successful, the project could position Łódź as a leader in sustainable heating and a model for similar projects across Europe.
How Seismic Tech Helps Us Go Green
- Historically, seismic surveying has been used in oil and gas exploration, but it’s now a key tool for identifying geothermal aquifers in places like the Łódź Trough, where hot waters reside in Lower Cretaceous and Jurassic sediment zones.
- Mapping underground layers allows engineers to pinpoint drilling locations with confidence—boosting the accuracy of temperature and yield estimates while limiting risk.
Challenges & Next Steps
Despite the promise, geothermal development comes with challenges:
- Geological and technical uncertainty: Geological conditions must be suitable to access warm, productive water reservoirs.
- Legal and regulatory hurdles: Permits and environmental assessments must clear before any drilling can proceed.
- Seismic risk: Though small-scale surveys are safe, enhanced geothermal systems (EGS) have occasionally caused minor induced seismicity in other countries—highlighting the importance of controlled testing.
What’s Next on the Timeline?
- Seismic survey completion in late summer.
- Data analysis to assess reservoir structure and temperature.
- If results are positive, design and siting of geothermal wells.
- Potential phase one drilling and pilot operation.
- Integration into the district heating network managed by Veolia.
All built around Innargi’s integrated, turnkey approach, making clean geothermal heat accessible to cities without burdening utility companies with huge upfront costs.
Related: Innargi secure first Geothermal field
✅ Bottom Line
Łódź is taking a bold step toward a sustainable, low-carbon heating future with seismic surveys that could unlock up to 200 MW of geothermal energy—representing around 15% of the city’s heating needs. If successful, this joint venture between Innargi, Veolia, and the city may serve as a replicable blueprint for clean district heating.
Ready to monitor Łódź’s geothermal journey? Stay tuned as the ground underneath the city reveals its clean energy promise!
Source: Innargi
Connect with us: LinkedIn
Comments
Post a Comment