The J-POWER Group pursues various methods of generating power, including those that are CO2-free. One method is thermal power generation. For more than half a century, J-POWER has been developing technologies for reducing environmental impact, while supporting the domestic energy supply through the stable operation of coal-fired power plants in Japan. We are applying the knowledge gained from those activities in 34 thermal power projects across five countries, including Japan.
Examples of Thermal Power Projects
Batang Power Plant (Batang Regency, Central Java Province, Indonesia)
PT Bhimasena Power Indonesia (BPI), in which J-POWER owns a 34% stake, successfully commissioned and started commercial operation of the Batang Power Plant (Batang PP), with 2 units x 1,000 MW in August 2022. Batang PP utilizes Indonesian sub-bituminous coal in two large boilers that use ultra-supercritical (USC) technology with high thermal efficiency, and is expected to contribute to the stable supply of electricity and to management of the environmental impact in Indonesia.
Jackson Generation Power Plant (Will County, Illinois, U.S.)
The Jackson Generation Power Plant (Jackson), which began commercial operation in May 2022, is a state-of-the-art, high-efficiency combined cycle gas turbine power plant. As such, we expect it to achieve a high rate of operational efficiency in the long term.
Jackson has the capability to supplement intermittent renewable energy generation, contributing to the community by both stable supplying of electricity and being environmentally friendly. As the plant is also designed to potentially burn hydrogen—a CO2 emissions-free fuel—with simple modifications, we additionally plan to explore the use of hydrogen.
Initiatives to Reduce CO2 Emissions
By ensuring high thermal power generation efficiency, J-POWER is continuing to curb fuel consumption and reduce CO2 emissions per unit of power generated. In Japan, we have achieved gross thermal power generation efficiency of approximately 48%*—one of the highest efficiency levels in the world—by introducing state-of-the-art equipment, and are further reducing CO2 emissions through mixed combustion of biomass fuels and coal.
Furthermore, we have combined coal gasification technology, which we have been researching for nearly 20 years, with CO2 separation and capture technologies, in order to produce hydrogen. In Japan, we are conducting demonstration tests of coal gasification technology and CO2 separation and capture technologies. We aim to commercialize CO2-free hydrogen power generation in the future, as part of our hydrogen production and supply business. Carbon capture and storage (CCS) technology, which captures and stores CO2 deep underground, and carbon capture and utilization (CCU) technology that enables CO2 to be recycled as a resource are both essential to the manufacture of CO2-free hydrogen. As part of our overseas activities, in July 2020 we began a feasibility study for a CCS demonstration project at the Gundih gas field in Indonesia. We are working toward achieving the underground injection and storage of CO2 emitted during natural gas production at this field.
- *Lower heating value (LHV)