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Japan's National Greenhouse Gas Emissions in Fiscal Year 2017(Preliminary Figures)

November 30, 2018

The Ministry of the Environment and the National Institute for Environmental Studies have released Japan's National Greenhouse Gas Emissions (preliminary figures) for fiscal year (FY) 2017.
Total emissions in FY2017 were 1,294 million tonnes of carbon dioxide equivalents (Mt CO2 eq.), a 1.0% decrease compared to those of FY2016; a 8.2% decrease compared to FY2013; and a 6.2% decrease compared to FY2005.
The main factor for the lower emissions as compared to FY2016 is the decrease in energy-related CO2 emissions due to the increase in the share of non-fossil fuels within the domestic energy supply brought by the wider adoption of renewable energy such as solar and wind power and the resumption of nuclear power plant operation.

Note: Japan's fiscal year is from April 1 to March 31.

Japan's total greenhouse gas emissions in FY2017 were 1,294 million tonnes of carbon dioxide equivalents (Mt CO2 eq.).

This is a decrease of 1.0% (12 Mt CO2 eq.) when compared to the FY2016 emissions (1,307 Mt CO2 eq.), mainly because of the decrease in energy-related CO2 emissions due to the increase in the share of non-fossil fuels within the domestic energy supply brought by the wider adoption of renewable energy such as solar and wind power and the resumption of nuclear power plant operation, despite the increase in hydrofluorocarbon emissions from refrigerants that substitute for ozone-depleting substances.

This is also a decrease of 8.2% (115 Mt CO2 eq.) when compared to the FY2013 emissions (1,409 Mt CO2 eq.), mainly because of the decrease in energy-related CO2 emissions due to the increase in the share of non-fossil fuels within the domestic energy supply brought by the wider adoption of renewable energy such as solar and wind power and the resumption of nuclear power plant operation, and the decrease in energy consumption, despite the increase in hydrofluorocarbon emissions.

This is also a decrease of 6.2% (86 Mt CO2 eq.) when compared to the FY2005 emissions (1,380 Mt CO2 eq.), mainly due to the decrease in energy-related CO2 emissions owing to the decrease in energy consumption, despite the increase in hydrofluorocarbon emissions.

* These preliminary figures for FY2017 were estimated based on annual figures in various statistics. Some annual figures from FY2016 were temporarily used in place of FY2017 figures that have yet to be released. Moreover, some estimation methodologies are currently being reconsidered in order to make more accurate estimations of emissions. As such, the final figures to be released in April 2019 could differ from the preliminary figures in this summary. Removals by forest and other carbon sinks will also be estimated and announced at the time of the final figures.

November 30, 2018
Ministry of the Environment
Government of Japan
Greenhouse Gas Inventory Office of Japan
National Institute for Environmental Studies

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