When we talk about climate change, carbon dioxide (CO₂) tends to dominate the conversation. But there’s another gas that’s heating the planet even faster: methane (CH₄). It’s the second biggest driver of global warming—and Australia has a big problem with it.
Why Methane Matters
Methane is over 80 times more potent than CO₂ at trapping heat over a 20-year period. While it doesn’t last as long in the atmosphere—around 8 to 12 years—its short-term impact is huge. Scientists estimate methane has caused about 30% of the global temperature rise since the Industrial Revolution.
Cutting methane isn’t just important—it’s low-hanging fruit. Unlike CO₂, which lingers for centuries, methane reductions can cool the planet relatively quickly.
Australia’s Dirty Secret
According to the International Energy Agency, Australia is underreporting methane emissions from coal and gas by at least 64%. That’s not a small oversight—it’s a massive gap that undermines our climate targets.
Investigations by the Australian Conservation Foundation and the Clean Air Task Force found methane leaks at over 100 points across 35 industrial sites in Queensland and New South Wales. These are unreported, unmanaged leaks—effectively slipping through regulatory cracks.
Where Is It Coming From?
Methane emissions are both natural and human-made, but today, 60% come from human activity, including:
- Fossil fuel production (coal, gas, oil)
- Livestock (mainly cattle)
- Landfills
- Rice cultivation
- Wastewater treatment
Natural sources like wetlands, oceans, and melting permafrost also play a role—but it’s the human-made sources we can (and must) tackle right now.
Victoria’s Methane Problem
In Victoria, household gas use—especially for heating—could account for up to 37% of the state’s emissions by 2035 if we don’t change course. With over two million homes connected to gas, and most heating still powered by it, that’s a ticking time bomb for our climate goals.
The good news? The solutions are already here:
- Reverse-cycle air conditioners (heat pumps) are far more efficient than gas heaters.
- Victoria’s electricity grid is getting cleaner by the year—heading toward 95% renewables by 2035.
Swapping out gas for electric is not just better for the planet—it’s cheaper for households in the long run.
The Satellite Wake-Up Call
New satellite technology like TROPOMI and MethaneSAT is painting a far more alarming picture than official emissions data. These tools show methane leaks are more widespread—and more damaging—than governments or companies have reported.
This has huge implications for climate action. If we’re underestimating methane, we’re underestimating risk.
The Takeaway
Methane may be invisible, but its impact is not. From underreported emissions to policy gaps and industry inaction, Australia needs to face its methane crisis head-on.
Cutting methane could slow global heating faster than almost any other action we take. It’s time we treated it like the climate emergency it is.