The developing of Specifications for Application of UNFC-2009 to Geothermal Energy Resources was carried out under a Memorandum of Understanding between UNECE and the International Geothermal Association signed on 19  September 2014. Under this MoU, the IGA agreed to develop Specifications and Guidelines for the application of UNFC-2009 to geothermal energy and to maintain them evergreen in a manner consistent with their proper application through regular and periodic review.

More information: https://www.unece.org/energywelcome/areas-of-work/unfc-and-sustainable-resource-management/applications/energyseunfc-re/unfc-and-geothermal-energy.html