14th Apr, 2025

From seismic to heat in two years; Bringing complex urban geothermal projects to life

Seismic trucks in operation in Aarhus May 2023 photo Innargi Kasper Hornbæk
Figure 1 Seismic trucks in front of the Danish Parliament in downtown Copenhagen Photo courtesy of Innargis Jesper Giørtz Behrens

Geothermal exploration in Denmark

Innargi is developing two large-scale geothermal projects, one in central Aarhus and another north of Copenhagen, both strategically identified using seismic data.

Impressively, their first geothermal plant in Aarhus is planned to deliver its first heat in September 2025, just 26 months after the seismic acquisition ended.

Once completed, these two projects will collectively deliver over 130 MW of heating through 19 geothermal wells, reducing CO2 emissions by more than 165,000 tonnes annually.

Image caption: Seismic trucks in front of the Danish Parliament in downtown Copenhagen. Photo courtesy of Innargi's Jesper Giørtz Behrens