The world needs a new source of energy, an unspillable source.

Why don’t we utilize the heating power of volcanoes to make thermal electric power stations?

Turning the generator makes electricity, generator is turned by turbine, and turbine is turned by force: the force is either water from waterfalls or steam. Boiling water creates steam. Water is boiled by coal, natural gas or atomic power. Why don’t we use the heat form volcanoes? This question is for scientists, who can think of a way utilize that wasted heat.