Australian coalmine emissions rise as most sites exceed limits, rely on offsets

TL;DR Australian coalmine emissions rose 0.5% to 31.78 million tonnes last financial year, with about 80% of mines exceeding government limits but meeting obligations by purchasing carbon offsets, a approach critics call a recipe for failure.

Context The Albanese government’s safeguard mechanism covers roughly 200 major industrial sites, requiring each to cut emissions intensity by 4.9% annually. Facilities report their onsite emissions to the Clean Energy Regulator, which compares them against individually set baselines. If a site exceeds its limit, it can comply by acquiring carbon credits that represent emissions reductions elsewhere, such as forestry projects.

Key Facts Australian coalmine emissions totalled 31.78 million tonnes in the last financial year, up from 31.63 million tonnes the previous year—a 0.5% increase. About 80% of coalmines emitted more than their government‑imposed limits during that period. Despite the excess, those mines remained compliant by buying offsets; Rio Tinto and Woodside each purchased over one million credits, likely costing around $40 million each. The Grosvenor mine’s closure due to fire prevented a larger rise.

What It Means Critics argue that reliance on offsets delays genuine decarbonisation. Georgina Woods of Lock the Gate called the safeguard mechanism’s offset dependence a "recipe for failure" and urged the government to strengthen direct emissions cuts. Scientists note that while onsite emissions fell 2.3% when offsets are excluded, the overall scheme’s effectiveness is questionable because facilities can fall below the 100,000‑tonne reporting threshold and escape counting. The policy’s next review will test whether the Albanese government tightens limits, reduces offset eligibility, or enforces steeper intensity reductions.

Watch for the upcoming safeguard mechanism review later this year, which may reshape how Australia’s largest industrial polluters meet climate targets.