Yet deep geothermal energy could provide some considerable cost savings when compared to conventional geothermal, due to the higher temperatures and pressures that can be accessed further into the Earth's crust. Some studies have suggested deep geothermal energy could supply heating for communities at costs similar to other forms of heating, such as using gas, but with fewer greenhouse gas emissions.

With this in mind, some pioneering researchers and companies are turning to new types of drills and drilling techniques to bore some of the deepest holes ever created in the hope of bringing geothermal energy to parts of the world that never thought it was possible.