Increase in the next-generation geothermal project drill rates by year, 1975-2025

Last updated 19 Jan 2026

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Sources

IEA analysis based on Lipton (2024), Samuel (2022), Akindipe (2025), Baujard (2017), World Oil (2025), Journal of Petroleum Technology (2025), Think GeoEnergy, Utah FORGE.

Notes

Pre-2020 projects include Fenton Hill, Rosemanowes, NW Geysers, Soultz, Habanero, Paralana, Penola, Pohang, Rittershoffen, ST1 Otaniem, United Downs.

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