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Published on 07/06/2025 at 22:04
MHI Awarded Contract for Basic Design of Japan’s Largest CO₂ Capture Plant at Hokkaido Electric Power’s Tomato-Atsuma Power Station
— One of Advanced CCS Projects in Japan, Moving Forward toward the Realization of a Carbon-Neutral World —
2025-07-07
・ Investigation of the facility’s main equipment and specifications for capture of 5,200 tons of CO2 per day through MHI’s proprietary CO2 capture technology
・ Concept to store captured CO2 in the sea area off Tomakomai, based on JOGMEC’s advanced CCS projects
Hokkaido Electric Power’s Tomato-Atsuma Power Station
(Photo Courtesy of Hokkaido Electric Power Co., Inc.)
Tokyo, July 7, 2025 – Mitsubishi Heavy Industries, Ltd. (MHI) has received an order from Hokkaido Electric Power Co., Inc. (HEPCO) for the basic design of a CO2 capture plant (Front End Engineering Design, FEED) for the company’s Tomato-Atsuma Power Station. The plant will have the capacity to capture 5,200 tons of CO2 per day from the flue gases emitted during combustion of the boilers in the power station. For this FEED project, MHI will investigate the main equipment and specifications through MHI’s proprietary CO2 capture technology, in preparation for the introduction of equipment in the future. When completed, the facility is expected to be the largest CO2 capture plant in Japan.
HEPCO, in cooperation with Idemitsu Kosan Co., Ltd. and Japan Petroleum Exploration Co., Ltd., concluded a contract with Japan Organization for Metals and Energy Security (JOGMEC), a Japanese government Incorporated Administrative Agency, for the design work of a CCS(Note1) project in the Tomakomai area of Hokkaido, based on an open call for business consignment regarding “Engineering Design for Japanese Advanced CCS Projects.”(Note2) According to the agreement, the conception for the project is for CO2 captured at HEPCO’s Tomato-Atsuma Power Station to be stored in deep saline formations in the Tomakomai area, with the aim of storing approximately 1.5 million to 2 million tons of CO2 per year by 2030. Of note, Japan’s Ministry of Economy, Trade and Industry (METI) has selected a sea area near Tomakomai as Japan’s first “specified area” under the Act on Carbon Dioxide Storage Business (“CCS Business Act”), and exploratory drilling is currently being considered.
MHI Group has formally declared its commitment to achieving carbon neutrality by 2040 (MISSION NET ZERO), and the Company is now working strategically to decarbonize both the energy demand and supply sides. A core element of the Company’s “Energy Transition,” which targets decarbonization on the energy supply side, is the development of a carbon capture, utilization and storage (CCUS) value chain integrating diverse sources of carbon emissions with modes for carbon storage and utilization. Going forward, MHI Group will continue to proactively promote its CCUS business worldwide, applying its proprietary CO2 capture technologies, contributing as a solutions provider to reducing greenhouse gas emissions on a global scale, and developing further solutions that contribute to environmental protection.
1Carbon dioxide Capture and Storage.
2For more information on the CCS project in the Tomakomai area under the JOGMEC “Advanced CCS Project” public offering, see the following press release. (Japanese) https://www.hepco.co.jp/info/2024/1252632_2023.html
Image of the Overall Scope of the Project
About MHI Group’s CO2 capture technologies
MHI Group has been developing the “KM CDR Process™” (Kansai Mitsubishi Carbon Dioxide Recovery Process) and the “Advanced KM CDR Process™” in collaboration with the Kansai Electric Power Co., Inc. since 1990. As of July 2025, the Company has delivered 18 plants adopting these processes. The Advanced KM CDR Process™ adopts the “KS-21™” solvent, which incorporates technological improvements over the amine-based “KS-1™” and offers superior regeneration efficiency and lower deterioration than the “KS-1™”, and it has been verified to provide excellent energy saving performance, reduce operation costs, and result in low amine emissions.
Further information on MHI Group’s CO2 capture plants:
https://www.mhi.com/products/engineering/co2plants.html
Tags: carbon neutral,energy transition,CCUS
About MHI Group
Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit https://www.mhi.com or follow our insights and stories on spectra.mhi.com.
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Mitsubishi Heavy Industries Ltd. published this content on July 07, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on July 07, 2025 at 02:03 UTC.
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Mitsubishi Heavy Industries Ltd is a Japan-based company mainly engaged in the development of energy, plants and infrastructure systems, logistics, heating and cooling, drive systems. The Company operates through four segments. Energy Segment is engaged in the design, manufacturing, sales, services and installation of thermal power generation systems, nuclear power generation systems, wind power generation systems, aircraft engines. Plants & Infrastructure Segment is engaged in the design, manufacturing, sales, services and installation of steelmaking machinery, merchant ships, engineering, environmental equipment and mechanical systems. Logistics, Thermal & Drive Segment is engaged in the design, manufacturing, sales, services and installation of logistics equipment, heat and cooling products, engines, turbochargers and others. Aircraft, Defense & Space Segment is engaged in the design, manufacturing, sales, services and installation of civil aircraft, defense aircraft and others.
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