China's Coal Output Posts Largest Year-on-Year Decline in a Decade
Miles Bennett
China's June coal output fell 9.7% year-on-year to 381 million tonnes — the steepest decline since 2016 — as a deadly mine disaster triggered a province-wide safety crackdown that is now reshaping the power-supply outlook for the second half.
Why did output plunge so suddenly?
A coal mine explosion in Shanxi province in late May killed 82 workers, prompting sweeping safety inspections across the province.
Shanxi accounts for roughly one quarter of China's total coal output; the mass shutdowns hit national supply hard.
This means → the drop is not demand-driven. It is a supply-side squeeze imposed by administrative fiat.
Can the demand side absorb the shock?
June thermal power generation — mostly coal-fired — rose just 0.5% year-on-year, the slowest pace this year. Demand pressure is mild for now.
Over the full first half, however, thermal output grew 2.9%, rebounding after its first annual decline in a decade in 2025.
In plain terms = power demand happens to be in a seasonal trough, giving the coal market a breathing window. Once demand picks up, the supply gap widens fast.
Why isn't wind power filling the hole?
June wind generation fell 5.6% year-on-year; the first-half total dropped 1.9% — despite record new capacity installed last year.
Two factors combined: grid operators curtailed output to prevent overload (known as "curtailment"), and wind speeds have been below average all year.
This reflects a basic constraint: installed capacity ≠ actual generation. Renewables' weather dependence has pushed thermal power back into the role of backstop supplier.
What matters for the second half?
The single key variable: when Shanxi's safety checks end and how fast mines resume production.
A slow restart means higher thermal-power fuel costs and greater strain on electricity supply — pressure on both ends.
This means → the pace of coal-supply recovery will directly set the trajectory for electricity prices and industrial energy costs through year-end.
Content is for reference only, not financial advice.