2008 article on deep geothermal power plant.[1]
2016 article on shutdown of plant.[2] "The technology worked but unfortunately the cost of implementing the technology and also the cost of delivering the electricity that was produced to a market was just greater than the revenue stream that we could create."
There's a group called DEEP which is trying to combine deep geothermal with fracking technology, to get better heat transfer. This creates small earthquakes as a side effect. They're working on that.[3]
A startup called FERVO is still trying.[4]
Shallow geothermal for building heat works fine, but it takes a lot of drilling just to get some heat.
So far, nobody seems to have a profitable deep geothermal power operation.
There's a group called DEEP which is trying to combine deep geothermal with fracking technology, to get better heat transfer. This creates small earthquakes as a side effect. They're working on that.[3]
A startup called FERVO is still trying.[4]
Shallow geothermal for building heat works fine, but it takes a lot of drilling just to get some heat.
So far, nobody seems to have a profitable deep geothermal power operation.
[1] https://e360.yale.edu/features/deep_geothermal_the_untapped_...
[2] https://www.abc.net.au/news/2016-08-30/geothermal-power-plan...
[3] http://deepgeothermal.org/home/
[4] https://fervoenergy.com/