Geothermal Resource from Flooded Mines
The Asturias region in Spain has long been one of the most important mining hubs in all of Europe. However, even there, the process of mine closures is nearing its conclusion, and soon coal-fired power plants are also planned to be replaced with more environmentally friendly energy sources. Therefore, the region is actively undergoing a process of just transition.
Within this transformation, bold and innovative solutions are being found. One such solution is the Pozo Barredo project, which involves creating a thermal network that utilizes the geothermal resource of mine water in the municipality of Mieres.
After numerous studies, it was concluded that the geothermal use of mine water has significant potential. To expand this potential, the focus was placed on centralized heating, which could connect future customers through a distribution network.
The project was implemented in several stages. Initially, the system provided heat to a hospital and university facilities, followed by the headquarters of a major company, then several more educational institutions, and eventually part of a large residential area. The geothermal exploitation of the well reaches a capacity of over 6.8 MW, making it the largest geothermal development in Spain. The project even received the Global Central Heating Award in the category of emerging markets.
It is expected that the project will save 440 tons of carbon dioxide emissions compared to conventional technologies and generate an annual turnover of €120,000.
This bold, innovative solution has become an example of a circular economy that turns a challenge into a source of wealth and a sustainable resource.
