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Why Is China Building So Many Coal Plants Despite Its Solar and Wind Boom?

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**要約(日本語)**

2025年、中国は太陽光・風力の急速な拡大と同時に、過去数年に比べて大幅に多くの石炭火力発電所を建設したことが報告された。

- **石炭火力の新設規模**
- 1 GW(約10億kW)以上の大型ユニットを50基以上が稼働開始。過去10年で年間20基未満だったのが一気に増加。
- 新たに78 GWの石炭発電容量がオンライン化。インドが過去10年間で導入した容量を上回る規模。

- **再生可能エネルギーの増加**
- 2025年だけで太陽光が315 GW、風力が119 GWと大幅に増設。
- その結果、全電力に占める石炭比率は約1 %低下し、需要増を再生可能エネルギーが吸収した。

- **政府の方針とリスク**
- 政府は石炭を「天候や時間帯に左右される太陽光・風力の安定的なバックアップ」と位置付けている。2022年の水力不足(干ばつ)が背景にある。
- しかし、過剰な石炭容量は電力部門の脱炭素化を遅らせ、政治的・財政的圧力で古い石炭プラントが稼働し続ける恐れが指摘されている。

- **提言**
- 老朽化・非効率な石炭発電所の早期廃止を促す。
- 2025〜2030年の間に電力部門の排出増加を防止する目標を、来年3月に承認される次期五カ年計画に盛り込むよう求められている。

**結論**
再生可能エネルギーは急速に拡大しているものの、安定供給を担保するために石炭火力の新設が急増。これが中国の温室効果ガス削減目標と矛盾するリスクがあり、今後の政策決定が注目されている。
Long-time Slashdot reader schwit1 shared this article from the Associated Press: Even as China's expansion of solar and wind power raced ahead in 2025, the Asian giant opened many more coal power plants than it had in recent years — raising concern about whether the world's largest emitter will reduce carbon emissions enough to limit climate change. More than 50 large coal units — individual boiler and turbine sets with generating capacity of 1 gigawatt or more — were commissioned in 2025, up from fewer than 20 a year over the previous decade, a research report released Tuesday said. Depending on energy use, 1 gigawatt can power from several hundred thousand to more than 2 million homes. Overall, China brought 78 gigawatts of new coal power capacity online, a sharp uptick from previous years, according to the joint report by the Centre for Research on Energy and Clean Air, which studies air pollution and its impacts, and Global Energy Monitor, which develops databases tracking energy trends. "The scale of the buildout is staggering," said report co-author Christine Shearer of Global Energy Monitor. "In 2025 alone, China commissioned more coal power capacity than India did over the entire past decade." At the same time, even larger additions of wind and solar capacity nudged down the share of coal in total power generation last year. Power from coal fell about 1% as growth in cleaner energy sources covered all the increase in electricity demand last year. China added 315 gigawatts of solar capacity and 119 gigawatts of wind in 2025, according to statistics from the government's National Energy Administration... The government position is that coal provides a stable backup to sources such as wind and solar, which are affected by weather and the time of day. The shortages in 2022 resulted partly from a drought that hit hydropower, a major energy source in western China... The risk of building so much coal-fired capacity is it could delay the transition to cleaner energy sources [said Qi Qin, an analyst at the Centre for Research on Energy and Clean Air and another co-author of the report]... Political and financial pressure may keep plants operating, leaving less room for other sources of power, she said. The report urged China to accelerate retirement of aging and inefficient coal plants and commit in its next five-year plan, which will be approved in March, to ensuring that power-sector emissions do not increase between 2025 and 2030.

Read more of this story at Slashdot.

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