A book and photoreportage documenting the 2017 High Level Conference of the Global Geothermal Alliance (GGA). The GGA serves as a platform for dialogue, co-operation and co-ordinated action between the geothermal industry, policymarkers, and stakeholders worldwide. It is a coalition for action to increase the use of geothermal energy, both in power generation and direct use of heat. The GGA calls on government, business, and other stakeholders to support the deployment of realisable geothermal potential. Photos and production by ETA Florence Renewable Energies