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Grupo Hunosa: District heat from abandoned coal mine

In order to find alternative uses for a mining site that needed to be closed, Grupo Hunosa partnered with the University of Oviedo to study the feasibility of using the 350-meter flooded well as an alternative energy source. Last year, they inaugurated a 2 MW geothermal power plant that will supply heat to public facilities as well as two private communities, providing up to 2,880 MWh/year.