Last week, the CO2Vision consortium headed to Mariager to visit Dansk Salt A/S, a company that plays a key role in understanding the Danish subsurface and in the exploitation of the geological resources found underground.
Dansk Salt extracts large quantities of salt from underground every year and supplies a raw material that is indispensable in everything from food production to medical applications. The company is part of the Nobian Group and is in the midst of a green transition, reducing both energy consumption and CO₂ emissions through new technologies, electrification, and more efficient production methods. The ongoing expansions, which include additional wells and modern facilities, demonstrate how a tradition-rich industry can take significant steps toward more sustainable operations. 
During the visit, the consortium gained insight into the process behind salt well drilling as well as Dansk Salt’s method for evaporating the salt at the plant, based on the energy system they have in Mariager.
For the CO2Vision partners, the visit was particularly valuable because the techniques used in salt drilling share many similarities with the investigations that will need to be conducted in connection with future CO₂ storage projects. This applies to both the geological analyses, the assessment of subsurface suitability, and the drilling work itself, which places high demands on precision and stability.
Denmark has significant potential for underground CO₂ storage, and various areas are already being considered as possible future storage sites. Experience from companies such as Dansk Salt—which has been working with deep geological formations for decades—provides valuable insight into both the opportunities and challenges of working in underground structures. This makes the company a relevant and inspiring partner in the development of future solutions for CO₂ storage in Denmark.
A big thank you to Dansk Salt for hosting us and for the tour.
