On November 7, the Ministry of Environment announced the results of the fourth selection of "decarbonization leading regions", which will serve as a nationwide model to achieve carbon neutrality by 2030 The call for proposals was held from August 18 to 28 and 54 planning proposals, including general proposals, were received from 62 local authorities across the country, of which 12 were from Twelve municipalities in one province were selected.

To date, leading regions in decarbonization have been selected through four selection rounds
(Source: Ministry of Environment)
By 2030, regions at the forefront of decarbonization will achieve net zero CO2 emissions from electricity consumption in the residential sector (households, businesses and other sectors), while will also aim to reduce greenhouse gas emissions in other areas, including those from the transportation and heat use sectors. An area that achieves reductions consistent with the overall goal of country until 2030 according to regional characteristics.
In at least 100 decarbonized regions, we will create a regionally tailored decarbonization roadmap by FY 2025 and deploy it by FY 2030. It will indicate the direction of our efforts decarbonization while solving local problems in different areas such as rural areas, fishing villages, mountain villages, remote islands and urban areas.
The municipalities selected for the fourth round are Tomakomai City, Hokkaido, Sendai City, Tsukuba City, Ibaraki Prefecture, Sosa City, Chiba Prefecture, Takaoka City, Toyama Prefecture, Ueda City, Nagano Prefecture, Takayama City , Gifu Prefecture, Osaka City, Ukiha City, Fukuoka Prefecture, Nagasaki City, Kumamoto Prefecture and Miyakojima City, Okinawa Prefecture. This is the first time that four of the 15 provinces that previously did not have decarbonization areas were selected. This is also the second planning proposal in which a province is the main proponent, after Akita province was selected in the first round.
Among these, Tomakomai City installed a super solar (large-scale solar power plant) with a capacity of 15,145 MW at an industrial facility in the Seibu Industrial Base for self-consumption, as well as providing excess renewable energy to the adjacent Yufutsu urban area. area. . In addition, by taking advantage of the region's characteristics of ports and airports, we will produce synthetic fuels such as SAF (sustainable aviation fuel) from green hydrogen derived from renewable energy and captured CO2. obtained from advanced CCS (CO2 separation and capture) projects. Aiming to become an energy supplier for generations.
Sosa City will introduce 2.22MW of rice solar power and battery storage to two rice fields in Toyowa and Harumi districts, where solar power sharing (agricultural solar power generation plant) has been deployed. Karma). In addition, a total of 6,128MW of on-site solar power generation and storage batteries will be installed in residential areas, private facilities, etc.
Takaoka City has installed 4,053 MW of solar power generation and storage batteries through on-site PPAs at residential areas and private facilities in the downtown area, and installed 4.25 MW of solar power Large-scale skyscrapers use idle land such as suburban landfills. Accordingly, 5.1MW of FIT (feed-in tariff) electricity will be provided to the region through PPA operators.
Nagasaki City will install 4.2MW of solar and 3.8MW of waste energy at final disposal sites and other locations to provide renewable electricity. We aim to achieve "Sustainable Tourism Guide (JSTS-D)" certification as a "sustainable tourism version of Nagasaki" that combines historical culture, night scene, and decarbonization.
Along with the expansion of Taiwanese semiconductor manufacturer TSMC and related companies, Kumamoto Prefecture will introduce 600kW battery storage and on-site solar power generation PPA at private facilities in the focus area into Aso Kumamoto Airport and nearby industrial centers. solar power generation, 7.7MW of floating solar power generation on dam reservoirs and 2MW of wood biomass power generation as off-site renewable energy sources, while increasing the pace of attracting companies targeting RE100 .
A total of 74 proposals from 95 municipalities in 36 provinces nationwide were selected from the first to fourth rounds (municipalities selected collectively are counted as one proposal). To date, 11 provinces have not received a single selected planning proposal.

