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regenerate sensitivity analyis with 1.2 stim cost factor and 120/130 flow rates
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docs/_images/fervo_project_cape-5-sensitivity-analysis-irr.svg

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docs/_images/fervo_project_cape-5-sensitivity-analysis-lcoe.svg

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docs/_images/fervo_project_cape-5-sensitivity-analysis-project_npv.svg

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tests/examples/Fervo_Project_Cape-5.out

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Simulation Metadata
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GEOPHIRES Version: 3.11.11
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Simulation Date: 2026-01-28
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Simulation Time: 14:51
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Calculation Time: 1.866 sec
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GEOPHIRES Version: 3.11.12
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Simulation Date: 2026-01-29
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Simulation Time: 12:12
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Calculation Time: 1.950 sec
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***SUMMARY OF RESULTS***
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tests/examples/Fervo_Project_Cape-6.out

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GEOPHIRES Version: 3.11.12
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Simulation Date: 2026-01-29
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Simulation Time: 08:52
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Calculation Time: 1.805 sec
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Simulation Time: 12:12
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Calculation Time: 1.832 sec
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***SUMMARY OF RESULTS***
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tests/examples/Fervo_Project_Cape-6.txt

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Exploration Capital Cost, 30, -- Equivalent to 2024b ATB NF-EGS conservative scenario exploration assumption of 5 full-size wells (NREL, 2025), plus $1M for geophysical and field work, plus 15% contingency, plus 12% indirect costs.
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Well Drilling Cost Correlation, 3, -- 2025 NREL Geothermal Drilling Cost Curve Update (Akindipe and Witter, 2025).
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Well Drilling and Completion Capital Cost Adjustment Factor, 0.9, -- 2024b Geothermal ATB ([NREL, 2025](https://atb.nrel.gov/electricity/2024b/geothermal)). Note: Fervo has claimed lower drilling costs equivalent to an adjustment factor of 0.8 (Latimer, 2025); the case study conservatively uses the higher ATB-aligned value.
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Well Drilling and Completion Capital Cost Adjustment Factor, 0.9, -- 2024b Geothermal ATB ([NREL, 2025](https://atb.nrel.gov/electricity/2024b/geothermal)). Note: Fervo has claimed lower drilling costs equivalent to an adjustment factor of 0.8 (Latimer, 2025); the case study conservatively uses the higher ATB-aligned value. See [Sensitivity Analysis](#sensitivity-analysis-section) for effect of different drilling costs on results.
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Reservoir Stimulation Capital Cost per Injection Well, 4, -- The baseline stimulation cost is calibrated from costs of high-intensity U.S. shale wells (Baytex Energy, 2024; Quantum Proppant Technologies, 2020), which are the closest technological analogue for multi-stage EGS (Gradl, 2018). Costs are also driven by the requirement for high-strength ceramic proppant rather than standard sand, which would crush or chemically degrade (diagenesis) over a 30-year lifecycle at 200℃ (Ko et al., 2023; Shiozawa and McClure, 2014) and the premium for ultra-high-temperature (HT) downhole tools. Note that all-in costs per well are higher than the baseline cost because they include additional indirect costs and contingency.
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Reservoir Stimulation Capital Cost per Injection Well, 4, -- The baseline stimulation cost is calibrated from costs of high-intensity U.S. shale wells (Baytex Energy, 2024; Quantum Proppant Technologies, 2020), which are the closest technological analogue for multi-stage EGS (Gradl, 2018). Costs are also driven by the requirement for high-strength ceramic proppant rather than standard sand, which would crush or chemically degrade (diagenesis) over a 30-year lifecycle at 200℃ (Ko et al., 2023; Shiozawa and McClure, 2014) and the premium for ultra-high-temperature (HT) downhole tools. Note that all-in costs per well are higher than the baseline cost because they include additional indirect costs and contingency. See [Sensitivity Analysis](#sensitivity-analysis-section) for effect of different stimulation costs on results.
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Reservoir Stimulation Capital Cost per Production Well, 4, -- See Reservoir Stimulation Capital Cost per Injection Well
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Field Gathering System Capital Cost Adjustment Factor, 0.54, -- Gathering costs represent 2% of facilities CAPEX per [Matson, 2024](https://www.linkedin.com/pulse/fervo-energy-technology-day-2024-entering-geothermal-decade-matson-n4stc/).

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