Overview
- A memorandum announced Thursday formalized a joint technical and commercial study in which Chiyoda will use Sage’s pressure, temperature and fluid data to design and cost high‑pressure surface plant equipment.
- Chiyoda will evaluate major equipment layouts, the balance of power and stored pressure energy, and indicative capital and operating costs to estimate the cost of delivered electricity.
- Sage validated its EGS approach with a 120‑day run at Christine, Texas that the company says exceeded its internal goals and produced the operational data the study will use.
- The firms highlight that Sage’s enhanced geothermal system injects water into engineered hot rock to capture heat and store pressure for later recovery, which enables continuous low‑carbon power and potential long‑duration energy storage.
- The project has won selection for Tokyo’s TIB CATAPULT support and is positioned as a step toward commercial projects such as a planned joint EGS effort with Ormat in Nevada, though the current work is an engineering and cost study rather than a construction commitment.