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| Year | Emissions | Baseline | Gap | ACCUs | SMCs | Compliance |
|---|---|---|---|---|---|---|
| 24–25 | 169 kt | 122 kt | -34 kt | 62,720 | 17,666 | Under baseline |
NKW01 Nickel West Kwinana Facility is a aluminium & non-ferrous metals facility operated by BHP NICKEL WEST PTY LTD in WA. Like all covered facilities, aluminium smelting and refining is one of Australia's most electricity-intensive industries. Under Australia's Safeguard Mechanism, NKW01 Nickel West Kwinana Facility must keep its annual emissions below a stepping-down baseline — or purchase carbon credits to cover any overage.
This facility is operating under a multi-year monitoring period (MYMP) — a Clean Energy Regulator-approved arrangement that allows compliance to be assessed across multiple years rather than annually. This is appropriate for facilities where emissions vary significantly year to year due to production cycles or operational changes. The gap shown above does not indicate non-compliance during the MYMP window.
Across the aluminium & non-ferrous metals sector, 7 of 8 covered facilities reported emissions above their baseline in 2023–24. The table below compares NKW01 Nickel West Kwinana Facility with other aluminium & non-ferrous metals facilities covered by the Safeguard Mechanism.
| Facility | Operator | State | Emissions | vs Baseline | Compliance |
|---|---|---|---|---|---|
| Queensland Alumina Limited Refinery | QUEENSLAND ALUMINA LIMITED | QLD | 3.09 Mt | +324 kt | ACCU buyer |
| Rio Tinto Yarwun | RTA Yarwun Pty Ltd | QLD | 2.11 Mt | +171 kt | ACCU buyer |
| Kwinana Alumina Refinery | Alcoa of Australia Limited | WA | 915 kt | +91 kt | ACCU + SMC |
| Portland Aluminium Smelter | Alcoa Portland Aluminium Proprietary Limited | VIC | 621 kt | +71 kt | ACCU buyer |
| Wagerup Alumina Refinery | Alcoa of Australia Limited | WA | 1.34 Mt | +64 kt | ACCU + SMC |
| Tomago Aluminium Smelter | TOMAGO ALUMINIUM COMPANY PTY LTD | NSW | 1.16 Mt | +57 kt | ACCU buyer |
| Gove Operations | RTA GOVE PTY LIMITED | NT | 134 kt | +19 kt | ACCU buyer |
| Nyrstar Port Pirie Facility | Nyrstar Port Pirie Pty Ltd | SA | 442 kt | 0 t | Under baseline |