Prepared by
Saulius Sliaupa, Gediminas Motuza, Vykintas Motuza, Vytautas Puronas, Larisa
Korabliova, Kirstina Ciuraite

The utilization of high-enthalpy geothermal aquifers is well recognized and proved in practice. Still, the combination of favourable conditions, e.g. high content of water vs. high temperatures, is not common that urges to look for alternative geothermal resources. The technology to extract useful amounts of energy from hot dry rock – nehanved geothermal system (HDR/EGS) resource has been under development for more than twenty years. Many field experiments showed that it is possible to extract HDR/EGS energy using techniques originally conceived and tested in the different sites, e.g. Soultz, Urach, Los Alamos, Rosemanowes, Fenton Hill.