Is Mesa A Mine complying with the Safeguard Mechanism?

Mesa A Mine is operating under a multi-year monitoring period approved by the Clean Energy Regulator. Compliance is assessed across the full monitoring period rather than annually.

What are Mesa A Mine's emissions compared to its baseline?

In 2023–24, Mesa A Mine reported covered emissions of 60 kt against a net baseline obligation of 100 kt — a surplus of 40 kt. Data is sourced from the Clean Energy Regulator's annual Safeguard Mechanism published data.

Who operates Mesa A Mine?

Mesa A Mine is operated by Robe River Mining Co. Pty. Ltd.. It is located in WA and is classified under the Metal Ore Mining sector for the purposes of the Safeguard Mechanism.

Where does Zerra's data for Mesa A Mine come from?

All data for Mesa A Mine is sourced from the Clean Energy Regulator's annual Safeguard Mechanism published data, which is publicly available at cer.gov.au. Zerra reproduces this data in plain English to make it accessible to journalists, researchers, and the general public. Data is updated annually when the CER publishes new figures, typically in February or March.

Metal Ore Mining · WA · Safeguard Mechanism 2023–24

Mesa A Mine

Name: Safeguard Mechanism emissions data — Mesa A Mine
Creator: Clean Energy Regulator
License: https://creativecommons.org/licenses/by/4.0/

Robe River Mining Co. Pty. Ltd.

📍 WAMetal Ore MiningABN 71 008 694 246Baseline: Multi-Year monitoring period

Mesa A Mine is operating under a multi-year monitoring period — a CER-approved arrangement where compliance is assessed over a longer window. The annual gap shown does not indicate non-compliance.

60 kt

2023–24 emissions

100 kt

net baseline obligation

-40 kt

vs baseline

—

ACCUs surrendered

Emissions history

Reported emissions vs baseline, 2024–2024

Red bars indicate emissions above baseline — covered by carbon credit purchases

Annual compliance record

Credit surrenders — Mesa A Mine

Year	Emissions	Baseline	Gap	ACCUs	SMCs	Compliance
24–25	60 kt	100 kt	-40 kt	—	—	Under baseline

Plain English

What this means

Mesa A Mine is a metal ore mining facility operated by Robe River Mining Co. Pty. Ltd. in WA. Like all covered facilities, iron ore, gold and base metal mining uses significant diesel and electricity. Under Australia's Safeguard Mechanism, Mesa A Mine 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 metal ore mining sector, 8 of 8 covered facilities reported emissions above their baseline in 2023–24. The table below compares Mesa A Mine with other metal ore mining facilities covered by the Safeguard Mechanism.

Other facilities — Metal Ore Mining

Metal Ore Mining facilities — Safeguard Mechanism 2023–24

Facility	Operator	State	Emissions	vs Baseline	Compliance
Brockman 2 / Nammuldi Mines	Hamersley Iron Pty. Limited	WA	312 kt	+127 kt	ACCU buyer
NMK01 Nickel West Mt Keith Facility	BHP NICKEL WEST PTY LTD	WA	201 kt	+101 kt	ACCU buyer
Brockman 4 Mine	Hamersley Iron Pty. Limited	WA	236 kt	+94 kt	ACCU buyer
Fimiston Operations	KALGOORLIE CONSOLIDATED GOLD MINES PTY LTD	WA	230 kt	+93 kt	ACCU buyer
Mount Isa Mines Copper and Zinc Operations	MOUNT ISA MINES LIMITED	QLD	410 kt	+82 kt	ACCU buyer
Paraburdoo Mine	Hamersley Iron Pty. Limited	WA	164 kt	+64 kt	ACCU buyer
Telfer Gold Mine	Newcrest Mining Limited	WA	354 kt	+63 kt	ACCU buyer
Solomon Mine	FMG SOLOMON PTY LTD	WA	452 kt	+62 kt	ACCU + SMC

← All Safeguard facilities

Source: Clean Energy Regulator — Safeguard Mechanism published data 2023–24 · All figures in tCO₂-e · Methodology · Data updated annually on CER release
All data sourced from the Clean Energy Regulator (Australian Government). Zerra is an independent data platform and is not affiliated with any listed facility or operator.

## Safeguard Mechanism data — Mesa A Mine
| Metric | Value |
|---|---|
| Facility | Mesa A Mine |
| Operator | Robe River Mining Co. Pty. Ltd. |
| State | WA |
| Sector | Metal Ore Mining |
| Reporting year | 2023–24 |
| Covered emissions | 60 kt |
| Baseline | 100 kt |
| Compliance gap | -40 kt |
| ACCUs surrendered | — |
| SMCs surrendered | — |
| SMCs generated | — |
| Compliance method | under_baseline |
| Multi-year monitoring period | Yes |
| Baseline type | Multi-Year monitoring period |
| Data source | Clean Energy Regulator, Australian Government |
| Last updated | 2026-04-07 |