Projects Database

Mikawa Post Combustion Capture Demonstration Plant


Toshiba Corporation owns and operates a small-scale pilot plant capable of capturing up to 10 tons of CO2 per day.

Under the umbrella of the Ministry of the Environment, a consortium of 13 entities led by Toshiba Corporation and the Mizuho Information & Research Institute is involved in the construction and evaluation of a demonstration scale facility capable of capturing more than 500 tons of CO2 per day.

Storage options are being investigated jointly by the Ministry of the Environment and the Ministry of Economy, Trade and Industry.

CO2 CAPTURE SOURCE: Flue gas stream from the Sigma Power Ariake Co. Ltd.’s Mikawa thermal power plant

LOCATION: Omuta City, Fukuoka Prefecture, Japan

INDUSTRY (FEEDSTOCK): Power generation (coal and biomass)

OVERALL PROJECT LIFECYCLE STAGE: The small-scale pilot has been operational since 2009. The demonstration scale facility is in the Execute (or construction) stage.

PROJECT START DATE: The demonstration scale facility is expected to be ready for operations in 2020

CAPTURE TYPE: Post-combustion

CAPTURE METHOD: Absorption chemical solvent-based process (Amine)


CO2 CAPTURE CAPACITY: Annual CO2 capture design capacity for the demonstration scale facility, when fully operational, is approximately 180,000 tons per annum

PRIMARY STORAGE OPTION: Offshore dedicated geological storage options are under investigation

TRANSPORTATION TYPE: Several transportation system options, including shuttle shipping, have been investigated

Project description

In September 2009, Toshiba began testing its CO2 capture technology at its Post-Combustion Capture Pilot Plant at the Sigma Power Ariake Co. Ltd.’s Mikawa thermal power plant in Fukuoka Prefecture. The facility captures 10 tons of CO2 per day from live flue gas of the coal-fired power plant, with the aim of verifying the performance, operability and maintainability of Toshiba’s amine-based chemical absorption solvent system.

As of October 2016, the pilot plant had achieved a total of 10,264 hours of operation on a live flue gas stream. Toshiba has indicated verified system stability over 2,800 hours of continuous operation at this pilot plant.

Toshiba Corporation and the Mizuho Information & Research Institute are leading a consortium in the construction and evaluation of a demonstration scale carbon capture plant. Toshiba Corporation will construct the facility designed to capture more than 500 tons of CO2 per day, around 50% of the daily emissions from the 50 MW Mikawa thermal power plant.

Completion of the demonstration facility is anticipated for 2020.  The facility will be utilised to evaluate the technology’s performance and cost profiles under various operating scenarios, as well as monitor any environmental aspects of an amine-based CO2 capture method.

The existing pulverised coal-fired boiler of the Mikawa thermal power plant has been replaced with a new circulating fluidised bed boiler to accommodate both coal and biomass fuels. Toshiba announced in April 2017 that commercial operations of the Mikawa power plant using biomass fuels had begun (with palm kernel shells imported primarily from Indonesia). The completion and integration of the CO2 capture demonstration plant with the new boiler will make this plant one of the world’s first bioenergy with CCS (BECCS) demonstration projects applied to a power plant.

In addition to CO2 capture from the Mikawa thermal power plant, the Ministry of the Environment, together with the Ministry of Economy, Trade and Industry, has been carrying out a joint investigation of potential offshore CO2 storage sites surrounding Japan. The investigation involves two- and three- dimensional seismic surveys (2014 - 2018) and boring survey and evaluation (2018 - 2021). A shuttle ship transportation system is also under evaluation.

Further information can be found in the following:

Project data is current as at 08/05/2017