When people talk about climate change, carbon dioxide (CO₂) tends to dominate the conversation. It is the gas most closely associated with burning fossil fuels, and it is the one most climate policies are built around. But there is another greenhouse gas that has rapidly moved to the top of the agenda for governments, scientists and climate policymakers worldwide: methane (CH₄).
Understanding why requires a closer look at what makes methane so significant, where it comes from, and why tackling it offers one of the fastest opportunities available to slow the rate of global warming.
What Makes Methane So Powerful?
To understand methane’s significance, it helps to think about greenhouse gases not just in terms of what they are, but how long they stay in the atmosphere and how much heat they trap while they are there.
Carbon dioxide is the long game. Once emitted, it can persist in the atmosphere for centuries, accumulating steadily and warming the planet over a very long period of time. Methane works differently. It has an atmospheric lifespan of around 10 to 12 years, which sounds reassuring until you consider what it does during that time.
According to the European Commission, methane’s global warming potential is 82.5 times that of CO₂ over a 20-year timescale. In other words, a tonne of methane released into the atmosphere today will trap vastly more heat than a tonne of CO₂ over the next two decades, even though the methane will eventually break down while the CO₂ lingers on.
Think of it this way. Carbon dioxide is like leaving a tap running slowly for hundreds of years, steadily filling a bath. Methane is like turning the tap on full for a shorter period. It does not stay around as long, but while it is there, its impact is far greater. That combination of intensity and relatively short lifespan is precisely what makes methane both a serious problem and a significant opportunity.
Where Does Methane Come From?
Some methane is produced naturally in wetlands and swamps, but the majority comes from human activity. According to the IEA Global Methane Tracker 2026, the fossil fuel sector alone accounts for around 35% of human-caused methane emissions, with total emissions from oil, gas and coal operations estimated at 124 million tonnes per year. Oil is the largest source at 45 million tonnes, followed by coal at 43 million tonnes, and natural gas at 36 million tonnes.
Beyond fossil fuels, agriculture and waste are also major contributors. Livestock are the primary agricultural source, while landfill sites, where organic material decomposes, account for a significant share of waste-related emissions. Together, these sectors account for the vast majority of the methane that human activity releases into the atmosphere each year.
What makes this significant is that, despite well-known and proven solutions being available, the IEA reports no sign that global energy-related methane emissions are falling. Oil, gas and coal production reached record highs in 2025, and emissions remain at very high levels. The problem is not a lack of solutions. It is a lack of implementation.
Why Tackling Methane Offers A Fast Climate Win
The scale of the opportunity is significant. The IEA Global Methane Tracker 2026 estimates that around 70% of methane emissions from fossil fuels could be abated with existing technology, and that more than 35 million tonnes could be avoided at no net cost, because the value of the gas captured and sold outweighs the cost of capturing it.
That is why governments are now investing heavily in satellite monitoring to detect leaks from oil and gas infrastructure, capturing methane from landfill sites, and supporting more sustainable agricultural practices. Today, 160 countries now participate in the Global Methane Pledge, committing to cut global methane emissions by at least 30% by 2030 compared to 2020 levels.
Unlike carbon dioxide, which can remain in the atmosphere for centuries, reducing methane emissions can have a noticeable impact within years rather than generations, making it one of the quickest and most impactful climate challenges we can tackle today. The tools exist. The commitments are in place. The question is whether implementation will keep pace with the urgency of the challenge.
What Does This Mean For The Yachting Industry?
At first glance, methane may seem removed from the world of yachting. Private yachts are not major sources of methane emissions. But understanding methane matters for anyone serious about understanding their carbon footprint, for one important reason.
When fossil fuels are burned, CO₂ is not the only greenhouse gas produced. Methane and other gases are also released in smaller quantities. Because different gases trap heat at different rates and persist in the atmosphere for different lengths of time, scientists use a common unit called Carbon Dioxide Equivalent (CO₂e) to measure and compare them. This converts the warming impact of gases such as methane into an equivalent amount of CO₂, allowing all emissions to be reported as a single, comparable figure.
This is why when calculate a vessel’s carbon footprint, that calculation is expressed in CO₂e, ensuring that the full warming impact of all greenhouse gases produced is captured, not just the CO₂. It is a more complete and accurate picture of a vessel’s true environmental impact.
The Bigger Picture
Methane does not receive the same public attention as CO₂, but its role in driving near-term warming is significant and increasingly well understood. According to the IEA Global Methane Tracker 2026, methane is responsible for nearly 30% of the rise in global average temperatures since the Industrial Revolution. The good news is that, unlike CO₂, the benefits of reducing methane emissions are felt relatively quickly. That makes it one of the most valuable tools available in the effort to limit global temperature rise to levels consistent with the Paris Agreement goals.
Whether it is through improved monitoring, cleaner energy production, more sustainable agricultural practices or high-quality carbon projects that directly target methane emissions, the principle is the same: acting on methane now delivers climate benefits faster than almost any other intervention available. That is why it has become one of the biggest priorities in climate policy today, and why it deserves far more attention than it typically receives.