Is the aquifer known to overlie granites, or more sedimentary...

Is the aquifer known to overlie granites, or more sedimentary units? A 3000m deep (upper boundary) aquifer with a 60C thermal gradient could put the fluid temperature to anywhere near 180C, perhaps slightly higher.

Ash, do you think they mean the upper boundary of the aquifer is 3000m deep, or the lower boundary? It makes quite a difference to temperature estimates. Using a figure where the lower boundaries of the aquifer are 3000m deep would give a fluid temperature estimate between 60C and 90C (considering the roughly 1km thickness of the body).

There will be reduced capex in the drilling, you are correct, but the plant will have a similar pricing once the start scaling up to the 100s of MW capacity. On top of that, infrastructure will need to be financed.

At a glance, even the best-case scenario of 180C is not really as attractive as the O.D temperatures, especially when infrastructure is factored in. Perhaps if the flow rate can be manipulated to very high levels it will improve the number of electrons produced per dollar of capex spent. It may be that the economic viability of the project will be dependent on high flow at lower temperatures, like most traditional GEOs.

You said GRK can produce electricity cheaper. Cheaper than what? Your response will be appreciated.

Thanks