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| Year | Emissions | Baseline | Gap | ACCUs | SMCs | Compliance |
|---|---|---|---|---|---|---|
| 24–25 | 95 kt | 100 kt | -5 kt | — | — | Under baseline |
Kemerton Silicon Smelter is a aluminium & non-ferrous metals facility operated by SIMCOA OPERATIONS 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, Kemerton Silicon Smelter must keep its annual emissions below a stepping-down baseline — or purchase carbon credits to cover any overage.
In 2023–24, Kemerton Silicon Smelter came in under its baseline — reporting emissions of 95 kt against an obligation of 100 kt, a surplus of 5 kt. 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 aluminium & non-ferrous metals sector, 7 of 8 covered facilities reported emissions above their baseline in 2023–24. The table below compares Kemerton Silicon Smelter 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 |