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@softwareengineerprogrammer softwareengineerprogrammer commented Dec 22, 2025

Description

Addresses NREL#443

Web interface links:

  1. Fervo_Project_Cape-4 (Phase II): https://gtp.scientificwebservices.com/geophires/?shared-geophires-result-id=9ac891c2-afaa-4e9f-a8b5-49ba3c7adb6b
  2. Fervo_Project_Cape-5 (Phase I): https://gtp.scientificwebservices.com/geophires/?shared-geophires-result-id=f9e49b45-ca2b-4e77-8d69-fe3c833b75a9

TODO

  1. 🚧 SME review (reservoir engineering)
  2. Incorporate ATB updates: https://atb.nrel.gov/electricity/2024b/geothermal
  3. Calibrate exploration cost to https://atb.nrel.gov/electricity/2024b/geothermal
    1. Created tracking issue to update GEOPHIRES correlation :Update exploration cost correlation according to 2024b ATB NREL/GEOPHIRES-X#447
  4. 🚧 Documentation and references
    1. ITC
    2. Construction CAPEX schedule
    3. Approach & Methodology updates
      1. <general>
      2. TOD/ambient temp
      3. OCC vs total capex
    4. Clarify calibration of drawdown/redrilling wrt 1-2% expected annual decline
  5. 🚧 Sensitivity analysis: https://github.com/scientific-web-services/geophires-fpc4-sensitivity-analysis
    1. Flow rate text overlap
    2. Link titles (on hover)
  6. Multiple construction years: Update Fervo_Project_Cape-4 based on publicly stated timelines - https://fervoenergy.com/fervo-energy-raises-462-million-series-e-to-accelerate-geothermal-development-and-meet-surging-energy-demand-with-clean-firm-power/
    1. Phase II: 500 MW: Fervo_Project_Cape-4
    2. Phase I: 100 MW: Fervo_Project_Cape-5: 71607b7
  7. Reservoir engineering updates
    1. ~8.5" ID
    2. Flow rate
    3. Fracture surface area
    4. PI/II instead of impedance
    5. Number of Fractures per Stimulated Well
    6. Increased lateral length (adjust fracture separation accordingly)
  8. Higher discount & bond rates

Testing & Verification

  1. Unit tests added: Retains test for previous version: https://github.com/softwareengineerprogrammer/GEOPHIRES/pull/117/changes#diff-77443b51920606ff05244e83370cb4bbd78fb8ee13076d9356d5051c2c9fbef5
  2. Unit tests updated: https://github.com/softwareengineerprogrammer/GEOPHIRES/pull/117/changes#diff-35ea0c0b80463f35958a7d1d7396bad7ad397a7c8e8d96a49da5b90e756c7c7c
  3. Manually tested
fervo_project_cape-4-sensitivity-analysis-lcoe fervo_project_cape-4-sensitivity-analysis-irr fervo_project_cape-4-sensitivity-analysis-project_npv

Change Checklist:

Observe the following checklist items if your change includes a new version (see versioning notes and version management docs).

Before merging:

  1. Add a CHANGELOG entry (example). RST Template:
M.m.P: `TITLE <https://github.com/NREL/GEOPHIRES-X/pull/PR-NUMBER>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/vM.m.P>`__

After merging:

  1. Push tag(s) to GitHub: git push origin refs/tags/vM.m.P
  2. Post a change announcement to the GEOPHIRES Change Announcements Discussion (example). Markdown template:
M.m.p: [TITLE](https://github.com/NREL/GEOPHIRES-X/pull/PR-NUMBER) | [release](https://github.com/NREL/GEOPHIRES-X/releases/tag/vM.m.P)

@softwareengineerprogrammer softwareengineerprogrammer changed the title Project Cape MCY and Reservoir Engineering updates Project Cape Construction (MCY) and Reservoir Engineering updates Jan 1, 2026
@softwareengineerprogrammer softwareengineerprogrammer changed the title Project Cape Construction (MCY) and Reservoir Engineering updates Project Cape Construction Timeline (MCY) and Reservoir Engineering updates Jan 1, 2026
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2 participants