Japan records its lowest net greenhouse gas emissions

Japan recorded its lowest-ever net greenhouse gas emissions in fiscal year 2024. Emissions fell 1.9 percent. The total was 994 million tonnes. Officials linked the drop to reduced energy use and to greater reliance on nuclear power and renewable energy.

Greenhouse gases are the gases that trap heat in the atmosphere, including carbon dioxide from burning fuel. Net emissions are the figure after accounting rules the government uses, as distinct from a gross tally of every tonne released. A fiscal year in Japan runs from April through March, so fiscal 2024 is not the same as the calendar year 2024. The 1.9 percent fall is the change from the previous fiscal year to this new low.

994 million tonnes is the level Japan reported. Lowest-ever means no earlier year in the country's comparable records was lower. Reduced energy use means the economy or households consumed less fuel and power. Increased reliance on nuclear and renewable sources means a larger share of electricity came from reactors and from wind, solar, hydro, or similar sources rather than from fossil fuels alone.

Nuclear power and renewables do not emit carbon dioxide at the point of generation in the way a coal or gas plant does. Shifting toward them can lower a national inventory even if some fossil plants remain. The report does not break the 994 million tonnes into sectors such as transport, industry, and homes. It gives the national net total, the percentage drop, and the two reasons.

National inventories are how governments show progress against climate targets. A record low is a milestone in that inventory, not a claim that emissions have stopped. The percentage is modest, at 1.9 percent, and the absolute level is still 994 million tonnes. Both numbers belong in the same sentence of the result.

Japan's fiscal 2024 net greenhouse gas emissions were 994 million tonnes. That is 1.9 percent below the year before and the lowest net total the country has recorded. Reduced energy use and more nuclear and renewable power were the stated causes. The figures were released on April 14.