raw · articles · ingested 2026-09-19
Pathways to Commercial Liftoff: Next-Generation Geothermal Power (US DOE, March 2024)
Source: https://liftoff.energy.gov/next-generation-geothermal-power/
Provenance: Official US DOE report (March 2024), well-sourced. The policy and cost framing every 2025–26 EGS news item cites. Retrieved via research agent; PDF partially extracted; summary cross-checked against ThinkGeoEnergy.
Resource
- Conventional hydrothermal: ~40 GW total US potential (only 25% located), ~3.7–4 GW on grid today.
- Next-generation (EGS + closed loop): >5 TW (5,500 GW) resource. Deployment potential 90+ GW by 2050 (20×), up to 300 GW in high cases. US needs 700–900 GW of clean firm capacity.
Technology definitions
- EGS: a well pair connected by hydraulically engineered fractures, plus horizontal drilling. Typical well depths 4,500–12,000 ft; EGS reservoirs in crystalline basement at ≥8,000 ft (vs 4,000–5,000 ft for shale).
- Closed loop / AGS: fluid never touches rock; heat transfer limited to borehole surface area, so it needs far more drilled length — “a 5 km deep well with 20 km of lateral drilling could achieve roughly 1-5 MW capacity, similar to individual EGS wells”; up to 90 km of hole per site; greenfield concepts >7 km deep. Eavor: Eavor-Lite pilot (Alberta); Geretsried, Germany ~8 MW from four loops to ~3 miles, then scheduled 2027 (actual first power: Dec 2025). Closed loop TRL ~6.
- Superhot rock (>400 °C) noted as a future extension; CATF cites 5–10× MW per well.
- Binary (ORC) plants dominate new builds; effectively zero emissions; flash plants for hotter fluids.
Costs
| Milestone | Overnight capital, $/kW | LCOE |
|---|---|---|
| 2021 ATB base | ~27,800 | |
| 2023 FOAK | ~14,700 | |
| 2030 liftoff target | ~4,700–5,000 | $60–70/MWh unsubsidized |
| 2035 Enhanced Geothermal Shot | ~3,700 | $45/MWh |
- Conventional geothermal LCOE $61–102/MWh; geothermal PPAs $70–100/MWh ($20–50 above solar). Drilling ≥40% of project cost.
- “Advancements at field demonstrations in the last two years have reduced estimated project development costs for enhanced geothermal systems (EGS) by almost 50 percent.”
- Learning: oil-and-gas learning rates ~15%; EGS demos doubling that. FORGE drilling rate +500% since 2017; private sector +300%; well cost $9.5M → $4.8M over six wells in six months (also stated as $13M → under $5M between the first two pilots).
Liftoff pathway
- Phase 1 “Reaching Liftoff”: 2–5 GW, $20–25B, 5–10 geologic settings in 4–6 states by
2030 ($5B FOAK risk capital). - Phase 2 “Achieving Scale”: 88–125 GW, $225–250B.
- Flexible/dispatchable operation with round-trip storage efficiency 59–93% (in-reservoir storage).
Key quotes
- “drive the national average cost of EGS to $60-70/MWh by 2030 … on pace to achieving DOE’s Enhanced Geothermal Shot Target of $45/MWh by 2035.”
- “Current EGS demonstrations are doubling average oil & gas learning rates, driving cost reductions of up to 50 percent in the last two years.”
Relevance to the cooling wiki
Supplies the official EGS-vs-closed-loop taxonomy, the $/kW cost waterfall and the note that binary/ORC is the default conversion cycle — the frame for judging whether EGS heat is ever cheap enough to burn in a COP-0.7 chiller rather than sell as electricity.