I'll reiterate some points that have been made before. Firstly HFR has less than half the temperature difference (say 200K) of other thermal plant hence lower Carnot efficiency. The rock cools so new holes and fracture zones have to be made within piping distance of the generator. So far the world has only a handful of working Kalina plants. Drilling a 4km deep hole in sandstone then granite must create an energy debt of hundreds of megawatt hours. Repeat every year or two. There is little control over lateral water flows which could be too big or too small, and I suggest plastic creep will be a factor. The mean non-volcanic convective heat gradient from the Earth's core is something like 0.2 w/m2 as opposed to 1000 w/m2 radiant for desert noon sun. The steam contains some radon from radioactive decay which is hazardous if inhaled. Away from the Artesian Basin top-up water will be at a premium.

Therefore I'm calling it a pipe dream both literally and metaphorically. OTOH I believe coupled wind and pumped hydro could make a true renewable baseload system, albeit limited.