Government data revealed that Japan experienced a 2.5% decline in greenhouse gas emissions, reaching a historic low during the fiscal year ending in March 2023. This reduction was attributed to decreased emissions within the industrial and service sectors.
According to data from the Environment Ministry, emissions for the 2022/23 period decreased to 1.135 billion metric tons of carbon dioxide from 1.164 billion tons recorded the previous year.
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This latest figure represents the lowest level since data collection began in 1990/91 and follows a trend of rising emissions in 2021/22, which marked the first increase in eight years.
According to the ministry, emissions in the industrial sector decreased by 5.3% and in the commercial and services sector by 4.2%. However, the transportation sector saw a 3.9% increase, attributed to heightened passenger traffic as socioeconomic activities recovered from the pandemic.
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Japan, the world’s fifth-largest emitter, targets a 46% reduction in emissions from 2013 levels by 2030. If successful, 2030 emissions are projected to reach 0.76 billion tons.
Following the 2011 Fukushima nuclear disaster, Japan experienced a surge in emissions due to reactor shutdowns, leading to increased reliance on fossil fuels. Emissions peaked at 1.4 billion tons in 2013/14 but have declined.
This decline has been aided by the expanded use of renewable energy and the gradual restart of reactors.
In the fiscal year 2022/23, renewable energy contributed 21.7% of the total electricity generation of 1.01 trillion kilowatt-hours, marking a 1.4 percentage point increase from the previous year.