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@softwareengineerprogrammer softwareengineerprogrammer commented Dec 22, 2025

Description

Addresses NREL#443

  1. 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
  2. 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)
  3. Higher discount & bond rates
  4. 🚧 Sensitivity analysis: https://github.com/scientific-web-services/geophires-sws/pull/4
    1. Flow rate
    2. PPA price
    3. Stimulation & drilling costs
    4. Stimulation outcome
      1. Area per frac
      2. stages/clusters
    5. Construction years
    6. ITC
    7. Bond interest rate
  5. Incorporate ATB updates: https://atb.nrel.gov/electricity/2024b/geothermal
  6. Calibrate exploration cost to https://atb.nrel.gov/electricity/2024b/geothermal
  7. 🚧 Documentation and references
  8. SME review

Testing & Verification

  1. Unit tests added: Describe new unit tests added, if any.
  2. Unit tests updated: Describe existing unit tests that were updated, if any.
  3. Manual testing: Describe any additional manual testing steps that were performed, such as running the change on a pre-existing data set you own.

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)

Additional metadata such as TODO items or link to your initial self-review (PR into your own fork created prior to submission)

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