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| Year | Emissions | Baseline | Gap | ACCUs | SMCs | Compliance |
|---|---|---|---|---|---|---|
| 24–25 | 589 kt | 589 kt | 0 t | — | — | Under baseline |
Chain Valley Colliery is a coal mining facility operated by Delta Electricity Pty Ltd in NSW. Like all covered facilities, underground and open-cut coal operations emit methane and energy-related CO₂. Under Australia's Safeguard Mechanism, Chain Valley Colliery must keep its annual emissions below a stepping-down baseline — or purchase carbon credits to cover any overage.
In 2023–24, Chain Valley Colliery came in under its baseline — reporting emissions of 589 kt against an obligation of 589 kt, a surplus of 0 t. Facilities that come in under baseline can generate Safeguard Mechanism Credits (SMCs), which can be sold to facilities that need to cover an overage.
Across the coal mining sector, 8 of 8 covered facilities reported emissions above their baseline in 2023–24. The table below compares Chain Valley Colliery with other coal mining facilities covered by the Safeguard Mechanism.
| Facility | Operator | State | Emissions | vs Baseline | Compliance |
|---|---|---|---|---|---|
| Curragh Mine | CORONADO AUSTRALIA HOLDINGS PTY LTD | QLD | 909 kt | +311 kt | Pending |
| United Coal Mine | UNITED COLLIERIES PTY LTD | NSW | 433 kt | +243 kt | ACCU + SMC |
| Goonyella Broadmeadow Mine | BM Alliance Coal Operations Pty Limited | QLD | 1.26 Mt | +242 kt | ACCU buyer |
| DEN01 | Dendrobium Coal Pty Ltd | NSW | 380 kt | +236 kt | ACCU + SMC |
| Russell Vale Colliery | WOLLONGONG RESOURCES PTY. LTD. | NSW | 336 kt | +226 kt | ACCU buyer |
| Hail Creek Mine | HAIL CREEK COAL PTY LTD | QLD | 1.38 Mt | +192 kt | ACCU buyer |
| Ashton Coal Mine (Underground) | ASHTON COAL OPERATIONS PTY LIMITED | NSW | 351 kt | +192 kt | ACCU buyer |
| Kestrel Coal Pty Ltd | Kestrel Coal Group Pty Ltd | QLD | 1.22 Mt | +188 kt | ACCU buyer |