June 4, 2026

Australia’s Big Four Banks Face Billions in Fossil Fuel Exposure – What It Means for Investors

Bank Australia Advance blog
Reading Time: 2 minutes

Australia’s major banks, while reducing their project finance to fossil fuel companies, still maintain significant exposures in the billions, according to recent findings from the Institute for Energy Economics and Financial Analysis (IEEFA). The big four—Australia and New Zealand Banking Group (ANZ), Commonwealth Bank of Australia (CBA), National Australia Bank (NAB), and Westpac—continue to overlook a critical environmental risk: methane emissions during fossil fuel production.

Overlooked Methane Risks in Fossil Fuels

Anne-Louise Knight, IEEFA’s lead coal analyst for Australia, highlighted how these banks, despite recognizing methane risks in other sectors, tend to ignore them when it comes to their coal or oil and gas clients. This oversight is particularly alarming given that methane is responsible for approximately 30% of the post-industrial increase in global temperatures.

Missing Methane Reporting

According to Knight, none of the major banks differentiate methane emissions from carbon dioxide emissions in their reporting. Some institutions appear to rely on outdated International Energy Agency (IEA) scenarios regarding net-zero emissions when devising their plans. Alarmingly, none of the banks have committed to phasing out financial support for metallurgical coal mining, a sector known for its higher methane intensity compared to thermal coal.

Calls for Action on Emissions

IEEFA strongly advocates for the mandatory submission of climate transition plans by all fossil fuel clients and urges banks to integrate methane emissions into their accounting practices. Independent verification of self-reported methane emissions from clients in methane-heavy industries should also become a standard requirement.

“Australia’s major banks have made substantial progress in tackling climate-related financial risks and establishing decarbonization goals,” Knight stated. “However, the credibility and effectiveness of these measures are undermined by critical shortcomings, particularly the inconsistent focus on methane emissions.”

As the climate crisis mounts, one wonders: can Australia’s banks really afford to keep their heads in the sand over methane emissions, or will they wake up and smell the… well, gas?

Questions & Answers

What are the main findings of the IEEFA regarding Australia’s major banks and methane emissions?
IEEFA’s findings indicate that while the big four banks in Australia have cut back on financing fossil fuel companies, they continue to have massive exposures. They also largely ignore the risks associated with methane emissions from these sectors.

How has methane contributed to climate change according to the IEEFA?
Methane is responsible for around 30% of the post-industrial increase in global temperatures, making it a significant concern in the context of fossil fuel production.

What measures does the IEEFA recommend for banks to improve their environmental accountability?
IEEFA recommends that banks should require submissions of climate transition plans from all fossil fuel clients, incorporate methane emissions into their accounting, and necessitate independent verification of self-reported methane levels.

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