geothermal and energy securiy

Peoples,

Has anyone seen any arguments put forward (Political or Economic) for Geothermal and Energy security?
Surely Geothermal is the ONLY green energy source that is stable in wide scale climate/solar output scenarios.
e.g. Volcanic ash, climate change scenarios etc.
Personally I dont see Solar or Wind/Wave being stable options - first major volcanic event might see countries with serious drops in the capacity to produce power. Last thing you need in an already bad situation.