Skip to content

Commit 82fcf55

Browse files
softwareengineerprogrammersoftwareengineerprogrammer
committed
WIP - injection temp = 80, total fracture surface area result reference
1 parent 1a159cd commit 82fcf55

File tree

3 files changed

+176
-174
lines changed

3 files changed

+176
-174
lines changed

‎docs/Fervo_Project_Cape-4.md

Lines changed: 14 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -55,24 +55,26 @@ the [web interface](https://gtp.scientificwebservices.com/geophires/?geophires-e
5555
| Investment Tax Credit Rate (ITC) | 30% | Same as 400 MWe case study (Fervo_Project_Cape-3) |
5656
| Inflation Rate During Construction (additional indirect capital cost) | 15% | Estimate high indirect capital costs in consideration of potential risks associated with unforeseen engineering challenges or construction delays |
5757
| Plant Lifetime | 30 years | 30-year well life https://fervoenergy.com/geothermal-mythbusting-water-use-and-impacts/. |
58+
| Injection Temperature | 80 degC | https://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2025/Fercho.pdf |
5859

5960
See [Fervo_Project_Cape-4.txt](https://github.com/softwareengineerprogrammer/GEOPHIRES/blob/main/tests/examples/Fervo_Project_Cape-4.txt)
6061
in source code for the full set of inputs.
6162

6263
## Results
6364

64-
| Metric | Result Value | Reference Value(s) | Reference Source |
65-
|--------------------------------------|----------------------------------------------------------|----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
66-
| LCOE | $79/MWh | $80/MWh | Horne, R., Genter, A., McClure, M. et al. Enhanced geothermal systems for clean firm energy generation. Nat. Rev. Clean Technol. 1, 148–160 (2025). https://doi.org/10.1038/s44359-024-00019-9 |
67-
| Project capital costs: Total CAPEX | $2.86B | | |
68-
| Project capital costs: $/kW | $4650/kW (based on maximum total electricity generation) | $4500/kW, $3000–$6000/kW | Horne, R., Genter, A., McClure, M. et al. Enhanced geothermal systems for clean firm energy generation. Nat. Rev. Clean Technol. 1, 148–160 (2025). https://doi.org/10.1038/s44359-024-00019-9; Latimer, T. (2025, February 12). Catching up with enhanced geothermal (D. Roberts, Interviewer). https://www.volts.wtf/p/catching-up-with-enhanced-geothermal. |
69-
| Maximum Total Electricity Generation | 615 MW | | Actual maximum total generation may be bounded or constrained by modular power plant design not modeled in this case study. For example, a modular design with 50MW units may constrain maximum total generation to 600 MW. |
70-
| Minimum Net Electricity Generation | 500 MW | 500 MW | https://fervoenergy.com/fervo-energy-announces-31-mw-power-purchase-agreement-with-shell-energy/. The 500 MW PPA is interpreted to mean that Cape Station's net electricity generation must never fall below 500 MWe. |
71-
| Average Production Temperature | 199℃ | 204℃, 190.6–198.6℃ (optimal plant operating range) | https://jpt.spe.org/fervo-and-forge-report-breakthrough-test-results-signaling-more-progress-for-enhanced-geothermal; https://eartharxiv.org/repository/view/7665/. |
72-
| Well Drilling and Completion Cost | $3.96M/well | $<4M/well | Latimer, T. (2025, February 12). Catching up with enhanced geothermal (D. Roberts, Interviewer). https://www.volts.wtf/p/catching-up-with-enhanced-geothermal |
73-
| WACC | 8.3% | 8.3% | https://www.linkedin.com/pulse/fervo-energy-technology-day-2024-entering-geothermal-decade-matson-n4stc |
74-
| After-tax IRR | 28.11% | 15–25% | Typical levered returns for energy projects |
75-
| Number of times redrilling | 3 | 3–6 | Redrilling expected to be required within 5–10 years of project start |
65+
| Metric | Result Value | Reference Value(s) | Reference Source |
66+
|-------------------------------------------------|----------------------------------------------------------|----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
67+
| LCOE | $79/MWh | $80/MWh | Horne, R., Genter, A., McClure, M. et al. Enhanced geothermal systems for clean firm energy generation. Nat. Rev. Clean Technol. 1, 148–160 (2025). https://doi.org/10.1038/s44359-024-00019-9 |
68+
| Project capital costs: Total CAPEX | $2.86B | | |
69+
| Project capital costs: $/kW | $4650/kW (based on maximum total electricity generation) | $4500/kW, $3000–$6000/kW | Horne, R., Genter, A., McClure, M. et al. Enhanced geothermal systems for clean firm energy generation. Nat. Rev. Clean Technol. 1, 148–160 (2025). https://doi.org/10.1038/s44359-024-00019-9; Latimer, T. (2025, February 12). Catching up with enhanced geothermal (D. Roberts, Interviewer). https://www.volts.wtf/p/catching-up-with-enhanced-geothermal. |
70+
| Maximum Total Electricity Generation | 615 MW | | Actual maximum total generation may be bounded or constrained by modular power plant design not modeled in this case study. For example, a modular design with 50MW units may constrain maximum total generation to 600 MW. |
71+
| Minimum Net Electricity Generation | 500 MW | 500 MW | https://fervoenergy.com/fervo-energy-announces-31-mw-power-purchase-agreement-with-shell-energy/. The 500 MW PPA is interpreted to mean that Cape Station's net electricity generation must never fall below 500 MWe. |
72+
| Average Production Temperature | 199℃ | 204℃, 190.6–198.6℃ (optimal plant operating range) | https://jpt.spe.org/fervo-and-forge-report-breakthrough-test-results-signaling-more-progress-for-enhanced-geothermal; https://eartharxiv.org/repository/view/7665/. |
73+
| Well Drilling and Completion Cost | $3.96M/well | $<4M/well | Latimer, T. (2025, February 12). Catching up with enhanced geothermal (D. Roberts, Interviewer). https://www.volts.wtf/p/catching-up-with-enhanced-geothermal |
74+
| WACC | 8.3% | 8.3% | https://www.linkedin.com/pulse/fervo-energy-technology-day-2024-entering-geothermal-decade-matson-n4stc |
75+
| After-tax IRR | 28.11% | 15–25% | Typical levered returns for energy projects |
76+
| Number of times redrilling | 3 | 3–6 | Redrilling expected to be required within 5–10 years of project start |
77+
| Total fracture surface area per production well | 2.73 * 10^6 | 2.787 * 10^2 m^2 (30 million ft^2) | https://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2025/Fercho.pdf |
7678

7779
See [Fervo_Project_Cape-4.out](https://github.com/softwareengineerprogrammer/GEOPHIRES/blob/main/tests/examples/Fervo_Project_Cape-4.out)
7880
in source code for the complete results.

0 commit comments

Comments
 (0)