It happens to be right next to the DOE sponsored Frontier Observatory for Research in Geothermal Energy (FORGE [1]) site that established the temperature and ability to create permeability at depth using EGS.
23 months to build is impressive, but the number that matters for EGS is thermal drawdown. If the fractured rock cools faster than modeled they have to keep drilling new wells, so I'd like to see Cape's output a few years in.
Would the deep-drilling approach enabled by Quaise alleviate this issue ?? I was super-interested when Quiase was first announced, but not sure if they are moving towards viability. Insights appreciated. Thx, NSC
If it wasn't, enhanced geothermal would be everywhere, which it isn't. (Yet, this company would say.)
Op is really just describing a core breakeven metric on the energy source. In the same way you measure an oil well with half-life of useful output, this is basically saying "EGS can prove to be useful if they can make sure they extract more economically useful heat than the economic costs of constantly drilling new wells."
Since no one has really made EGS widespread yet, that suggests no one has yet cracked this nut.
If the coffin needed any more nails, this puts the final kibosh on that cancelled SMR project out there that centered on Utah and Idaho, the one involving NuScale. Geothermal makes much more sense for them now.
There's a geothermal project at the Newberry Volcano in Oregon that also looks interesting (different people doing that).
I was referring to enhanced geothermal in general for district heating, as I believe you are potentially a subject matter expert and qualified to opine.
They tried to drill for one in Switzerland twice. One in Basel and one in St. Gallen but both times causes earthquakes significant enough that the whole project was scraped.
This is pretty cool! I wonder if datacenters can get permits to colocate geothermal power + heat transfer. That might make permitting the actual datacenter significantly easier if there isn't a huge additional grid tie in.
I admit I don't know enough, but does it negatively affect the underground water a negative way? I read a while back that geothermal plants (can) use fracking like technique to heat up the water but it has negative effects on the local geology and underground water. But not sure if that's true hencey question here.
Every project has risks, of course. EGS projects are basically two wells making a circulation loop: inject cold water down one well under pressure, circulate it through hot rocks using the fracked channels, and pull out hot water up the other well.
Theoretically, a leak into groundwater aquifers would make keeping the system pressurized harder or would dillute the amount of heat they're extracting, so seems like a stronger commercial incentive not to f up the groundwater.
In oil fracking they're just trying to pull the oily goo up from underground. And in theory you could do heat extraction using just water instead of shale goo solvents so any contamination would be less impactful?
I dunno, I'm just internet armchair quarterbacking this until a real geologist chimes in, but I can see how this is a somewhat different beast that shale fracking wells.
Huh, my first reaction was to say that Enhanced Geothermal is actually just a polite way of saying fracked geothermal but it turns out that's not quite accurate. Hydro-shearing (which EGS uses) doesn't intentionally create new cracks in the rock, which fracking does, but will cause existing cracks to grow. Potentially still negative local effects for sure but not as violently, hopefully.
The new thing is using new-ish fracking drilling techniques to create a geothermal resource. Conventional geothermal relies on finding very specific geology which is why its so rare. Enhanced geothermal can (in theory) work in many more places since it can create the geology needed to produce electricity.
It is a nice field they have.
It happens to be right next to the DOE sponsored Frontier Observatory for Research in Geothermal Energy (FORGE [1]) site that established the temperature and ability to create permeability at depth using EGS.
[1] https://utahforge.com/
23 months to build is impressive, but the number that matters for EGS is thermal drawdown. If the fractured rock cools faster than modeled they have to keep drilling new wells, so I'd like to see Cape's output a few years in.
Would the deep-drilling approach enabled by Quaise alleviate this issue ?? I was super-interested when Quiase was first announced, but not sure if they are moving towards viability. Insights appreciated. Thx, NSC
Is there any reason to believe this is likely?
If it wasn't, enhanced geothermal would be everywhere, which it isn't. (Yet, this company would say.)
Op is really just describing a core breakeven metric on the energy source. In the same way you measure an oil well with half-life of useful output, this is basically saying "EGS can prove to be useful if they can make sure they extract more economically useful heat than the economic costs of constantly drilling new wells."
Since no one has really made EGS widespread yet, that suggests no one has yet cracked this nut.
> If it wasn't, enhanced geothermal would be everywhere, which it isn't.
That seems like a fallacy.
It may be a deductive fallacy, but it's perfectly reasonable inductively.
"World's first" implies this is fairly experimental, surely?
"If the internet was useful, everyone would use it" is something that wouldn't stand the test of time, right?
It is not an uncommon problem with geothermal.
If the coffin needed any more nails, this puts the final kibosh on that cancelled SMR project out there that centered on Utah and Idaho, the one involving NuScale. Geothermal makes much more sense for them now.
There's a geothermal project at the Newberry Volcano in Oregon that also looks interesting (different people doing that).
Yes! It's near where I live, very excited to see this come online.
Does this support improved availability and economics of district heating?
DISTRICT HEATING?
WHERE?
I don't think district heating had anything to do with the CFPP.
I was referring to enhanced geothermal in general for district heating, as I believe you are potentially a subject matter expert and qualified to opine.
District heating doesn't make much sense in the US west. The distances are too large.
They tried to drill for one in Switzerland twice. One in Basel and one in St. Gallen but both times causes earthquakes significant enough that the whole project was scraped.
This is pretty cool! I wonder if datacenters can get permits to colocate geothermal power + heat transfer. That might make permitting the actual datacenter significantly easier if there isn't a huge additional grid tie in.
Certainly a welcome development. Let's hope this pilot can be repeated and scaled.
I admit I don't know enough, but does it negatively affect the underground water a negative way? I read a while back that geothermal plants (can) use fracking like technique to heat up the water but it has negative effects on the local geology and underground water. But not sure if that's true hencey question here.
Every project has risks, of course. EGS projects are basically two wells making a circulation loop: inject cold water down one well under pressure, circulate it through hot rocks using the fracked channels, and pull out hot water up the other well.
Theoretically, a leak into groundwater aquifers would make keeping the system pressurized harder or would dillute the amount of heat they're extracting, so seems like a stronger commercial incentive not to f up the groundwater.
In oil fracking they're just trying to pull the oily goo up from underground. And in theory you could do heat extraction using just water instead of shale goo solvents so any contamination would be less impactful?
I dunno, I'm just internet armchair quarterbacking this until a real geologist chimes in, but I can see how this is a somewhat different beast that shale fracking wells.
Huh, my first reaction was to say that Enhanced Geothermal is actually just a polite way of saying fracked geothermal but it turns out that's not quite accurate. Hydro-shearing (which EGS uses) doesn't intentionally create new cracks in the rock, which fracking does, but will cause existing cracks to grow. Potentially still negative local effects for sure but not as violently, hopefully.
Do they have a conventional drill or does this involve some new technology? They aren’t using the microwave thing are they?
Fervo was previously discussed on hn a couple months ago when they were hyping up this project: https://news.ycombinator.com/item?id=47903945
Some good info about what's different in there.
The new thing is using new-ish fracking drilling techniques to create a geothermal resource. Conventional geothermal relies on finding very specific geology which is why its so rare. Enhanced geothermal can (in theory) work in many more places since it can create the geology needed to produce electricity.
They’re using tech invented for fracking, so very conventional. The application for geothermal is what’s new.