Status of Japanese Supercritical Geothermal Project as of 2025

Hiroshi Asanuma; Takashi Akatsuka; Takaichi Iwasaki; Hisao Kato; Jun Nishijima; Shigemi Naganawa; Atsushi Okamoto; Jun Ichiro Ishibashi; Daisuke Oka; Yasuyuki Hattori; Hiroki Saito

Status of Japanese Supercritical Geothermal Project as of 2025

Hiroshi Asanuma
, Takashi Akatsuka
, Takaichi Iwasaki
, Hisao Kato
, Jun Nishijima
, Shigemi Naganawa
, Atsushi Okamoto
, Jun Ichiro Ishibashi
, Daisuke Oka
, Yasuyuki Hattori
, Hiroki Saito

Earth Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The Japanese government is promoting the large-scale introduction of renewable energy to establish a "carbon-free society in 2050". However, there are obstacles to introducing geothermal power generation, such as uncertainty, consensus building, and lead time, so the installed capacity will remain at approximately 510 MW as of April 2024 (Japan Geothermal Association: JGA). "Supercritical geothermal power generation," which utilizes geothermal resources under temperature and pressure conditions above the critical point of pure water, is attracting attention as a next-generation technology that can dramatically increase geothermal power generation in Japan and is listed as an important technology in the Japanese government's "Green Growth Strategy." The New Energy and Industrial Technology Development Organization has been implementing national projects related to supercritical geothermal power generation. In this presentation, we will introduce the results of past projects and an overview of projects currently being implemented.

Original language	English
Title of host publication	2025 Geothermal Rising Conference
Subtitle of host publication	Using the Earth to Save the Earth, GRC 2025
Publisher	Geothermal Resources Council
Pages	2514-2518
Number of pages	5
ISBN (Electronic)	9798331328962
Publication status	Published - 2025
Event	2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025 - Reno, United States Duration: Oct 26 2025 → Oct 29 2025

Publication series

Name	Transactions - Geothermal Resources Council
Volume	49
ISSN (Print)	0193-5933

Conference

Conference	2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025
Country/Territory	United States
City	Reno
Period	10/26/25 → 10/29/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Geophysics

Cite this

Asanuma, H., Akatsuka, T., Iwasaki, T., Kato, H., Nishijima, J., Naganawa, S., Okamoto, A., Ishibashi, J. I., Oka, D., Hattori, Y., & Saito, H. (2025). Status of Japanese Supercritical Geothermal Project as of 2025. In 2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025 (pp. 2514-2518). (Transactions - Geothermal Resources Council; Vol. 49). Geothermal Resources Council.

Status of Japanese Supercritical Geothermal Project as of 2025. / Asanuma, Hiroshi; Akatsuka, Takashi; Iwasaki, Takaichi et al.
2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025. Geothermal Resources Council, 2025. p. 2514-2518 (Transactions - Geothermal Resources Council; Vol. 49).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Asanuma, H, Akatsuka, T, Iwasaki, T, Kato, H, Nishijima, J, Naganawa, S, Okamoto, A, Ishibashi, JI, Oka, D, Hattori, Y & Saito, H 2025, Status of Japanese Supercritical Geothermal Project as of 2025. in 2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025. Transactions - Geothermal Resources Council, vol. 49, Geothermal Resources Council, pp. 2514-2518, 2025 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2025, Reno, United States, 10/26/25.

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AU - Iwasaki, Takaichi

AU - Kato, Hisao

AU - Nishijima, Jun

AU - Naganawa, Shigemi

AU - Okamoto, Atsushi

AU - Ishibashi, Jun Ichiro

AU - Oka, Daisuke

AU - Hattori, Yasuyuki

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AB - The Japanese government is promoting the large-scale introduction of renewable energy to establish a "carbon-free society in 2050". However, there are obstacles to introducing geothermal power generation, such as uncertainty, consensus building, and lead time, so the installed capacity will remain at approximately 510 MW as of April 2024 (Japan Geothermal Association: JGA). "Supercritical geothermal power generation," which utilizes geothermal resources under temperature and pressure conditions above the critical point of pure water, is attracting attention as a next-generation technology that can dramatically increase geothermal power generation in Japan and is listed as an important technology in the Japanese government's "Green Growth Strategy." The New Energy and Industrial Technology Development Organization has been implementing national projects related to supercritical geothermal power generation. In this presentation, we will introduce the results of past projects and an overview of projects currently being implemented.

KW - Modeling of Reservoir

KW - Supercritical Geothermal Power Generation

KW - Superhot Geothermal

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ER -

Status of Japanese Supercritical Geothermal Project as of 2025

Abstract

Publication series

Conference

UN SDGs

All Science Journal Classification (ASJC) codes

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Cite this