CalEnergy and others are operating geothermal energy plants by pumping up super-heated mineral enriched water and pumping back in water even deeper than what they are pulling out.
Same process (fracking) used to pump out oil in Ohio, Oklahoma, etc. that are experiencing an increase in earthquakes. The number of earthquakes below 3.0 on the Richter scale has gone up by 700% in many of these areas and little earthquakes puts increased pressure on faults leading to earthquakes of higher magnitude than is normal for that area. CalEnergy is 'greasing' the way for an 8.0 in Cali.
Firestorms are kids play to an 8.0 ... I imagine you understand that.