Australia
Mandatory

Australian Safeguard Mechanism

Published on
27 March 2025
Contributors
Afonso Firmo
Co-founder and Director
Francesca Castro
Research and Content
Macarena Massuh
Sustainability Enablement
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What is the Safeguard Mechanism?

The Safeguard Mechanism requires Australia’s largest greenhouse gas emitters to keep their emissions within set limits, in line with national climate targets: a 43% reduction from 2005 levels by 2030 and achieving net zero emissions by 2050.

What happens if a facility exceeds its baseline?

If a facility emits more than its assigned baseline, it must take action to address the excess emissions. Each year, the Clean Energy Regulator assesses the facility’s actual emissions against its baseline for the relevant reporting period.

Facilities that go over their emissions baseline are required to address the excess. Each year, a safeguard facility’s actual emissions are assessed against its baseline for the relevant monitoring period.

What are Safeguard Mechanism baselines?

Most facilities regulated under the Safeguard Mechanism are assigned a default baseline of 100,000 tonnes of CO₂-e per year, unless another baseline category applies. There are three main types of baselines:

  • Standard baseline – decreases 4.9% annually.

  • Landfill baseline – also decreases 4.9% annually.

  • Sectoral baseline – fixed at 198 million tonnes of CO₂-e per year for all grid-connected electricity generators.

Note: Facilities that qualify as trade-exposed baseline-adjusted (TEBA) may be eligible for lower annual decline rates, as low as 1%.

Types of Safeguard Mechanism baselines

STANDARD BASELINE:

Applies to most industrial facilities and is based on:

  • Annual production levels: production quantities a facility generates during a given financial
  • Emissions intensity of each product
  • The applicable decline rate of the product

LANDFILL BASELINE: 

Used for waste management facilities and is calculated using:

  • Emissions from non-legacy waste
  • A default methane capture efficiency of 37.2%
  • Near-surface methane oxidation factor 
  • The applicable decline rate

SECTORAL BASELINE:

Applies to electricity generators connected to major Australian grids:

  • National Electricity Market (NEM)
  • South West Interconnected System
  • North West Interconnected System
  • Darwin to Katherine network
  • Mount Isa–Cloncurry supply network

This collective baseline is fixed at 198 million tCO₂-e annually.

How can responsible emitters manage excess emissions?

Facilities that exceed or expect to exceed their baselines can manage excess emissions by:

  • Surrendering Australian Carbon Credit Units (ACCUs) or Safeguard Mechanism Credit Units (SMCs) to offset emissions.
  • Applying for TEBA status if eligible as an emissions-intensive, trade-exposed (EITE) facility.
  • Borrowing baseline from the next financial year.
  • Applying for a Multi-Year Monitoring Period (MYMP) to extend the baseline over multiple years.

Can responsible emitters apply for an exemption?

Yes. Emitters may apply for an exemption if a facility exceeds its baseline due to a natural disaster or criminal activity, provided they can demonstrate:

  • A direct link between the event and the excess emissions.
  • Preventive and response actions taken before and after the event.

Exemptions will not be granted for indirect consequences, such as operational changes in response to market shifts caused by a disaster.

What happens if a facility stays below its baseline?

Facilities that emit below their baseline may be eligible to earn Safeguard Mechanism Credit Units (SMCs). These credits can:

  • Be used to meet the facility’s own future obligations, or
  • Be traded with other responsible emitters.

To earn and trade SMCs, the responsible emitter must have an account with the Australian National Registry of Emissions Units (ANREU).

Key terms

Emission Intensity: The amount of emissions produced per unit of output.

Safeguard Mechanism Credit Units (SMCs): Tradable credits representing one tonne of CO₂-e emissions below a facility’s baseline.

Australian Carbon Credit Units (ACCUs): Tradable units issued by the Australian Government representing one tonne of CO₂-e that has been avoided, reduced, or removed through eligible projects.

Resources and further information: 

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