A brand new examine seems to point out that methane from landfilled municipal waste in Europe is a significant, long-term local weather danger that’s systematically underestimated in coverage debates. Methane is without doubt one of the most important (albeit short-lived) greenhouse gases, by way of its propensity to soak up infrared radiation. It’s believed to play a essential position in near- and long-term warming.
The authors say the findings elevate severe questions on Europe’s capacity to fulfill its local weather and circular-economy aims if landfill diversion insurance policies are weakened or undermined.
The examine “Methane emissions from Europe’s landfills – Eventualities and Knowledge Challenges”, carried out by Prognos Consulting and the ifeu Institute (January 2026), analyses methane emissions from municipal stable waste (MSW) deposited in landfills within the EU-27 and the UK between 2022 and 2050. It additional tracks the long-term local weather affect of those emissions effectively past mid-century, highlighting how at this time’s waste administration decisions lock in warming results for many years.
Enduring legacy
Even when landfilling charges fall, methane emissions don’t cease: waste buried beneath continues to emit methane for many years, lengthy after a web site’s closure.
Below a “established order” state of affairs, the examine finds that round 1.9 billion tonnes of municipal waste landfilled between 2022 and 2050 would generate roughly 1.5 billion tonnes of CO₂-equivalent methane with a 100-year international warming potential (GWP 100) by 2130. Crucially, 37% of those emissions would happen after 2050, lengthy after disposal has ended.
Full implementation of the EU waste laws, which limits landfilling of municipal waste to 10%[1] by 2035[2], would roughly halve methane emissions, however nonetheless go away round 700 million tonnes CO₂-equivalent locked in over time. This confirms that landfilling biodegradable waste creates a long-lasting methane legacy that instantly conflicts with the EU’s 2050 climate-neutrality goal.
When methane’s short-term warming affect is taken into account – methane being round 80 instances stronger than CO₂ over 20 years – the dimensions of the issue turns into even clearer. In a 20-year horizon (GWP 20), landfill methane emissions are virtually thrice as excessive as these calculated underneath the usual 100-year metric: 4.5 billion tonnes within the “established order” state of affairs and a pair of.1 billion tonnes within the state of affairs contemplating the total implementation of the EU waste laws, underlining methane’s essential position in near-term local weather warming. To place this in perspective, 2.1 billion tonnes of CO₂-equivalent corresponds to the annual emissions of greater than 700 coal-fired energy vegetation[3].
Knowledge limitations complicate mitigation
The examine additionally highlights persistent knowledge gaps and methodological inconsistencies in nationwide inventories, with a number of nations counting on default assumptions for waste composition and methane seize. Satellite tv for pc-based analysis means that precise emissions could also be greater than formally reported.
These uncertainties reinforce a easy conclusion: probably the most dependable technique to minimize landfill methane is to stop biodegradable waste from getting into landfills within the first place, according to the waste hierarchy and circular-economy ideas. That is described underneath the fourth state of affairs of the examine.
Incoherent coverage decisions might worsen emissions
Particularly, ongoing discussions on the inclusion of Waste-to-Vitality (WtE) within the EU Emissions Buying and selling System (ETS) should be approached with nice care. If local weather coverage doesn’t totally mirror the far greater methane impacts of landfilling, there’s a danger that residual waste might be diverted away from managed therapy and again to landfill. This danger is heightened if residual waste incineration is penalised regardless of its established position in avoiding emissions.
The findings are additionally related for the UK. As discussions proceed on a attainable linking of the UK and EU ETSs, it’s important to keep away from coverage alerts that might enhance reliance on landfilling and the related methane emissions, say the authors. If home residual waste therapy turns into uncompetitive, the UK dangers “waste leakage”, with waste exported to cheaper abroad landfills, undermining each the waste hierarchy and nationwide net-zero targets.
Dr. Siegfried Scholz, President of ESWET, mentioned:
“We might be sleepwalking right into a landfill catastrophe in Europe. Any local weather coverage that makes landfilling appear extra engaging goes towards each local weather logic and the EU’s personal waste hierarchy. On this context, approaches like together with Waste-to-Vitality within the EU ETS should be fastidiously evaluated: if residual waste is diverted from managed therapy with out totally contemplating the a lot greater methane impacts of landfilling, Europe dangers locking itself into a better emission trajectory and making its methane discount targets unattainable.”
A transparent message to EU decision-makers
The findings underline the necessity for:
- Strict enforcement of landfill-reduction targets and additional tightening of landfill rules.
- A speedy discount of biodegradable waste despatched to landfill.
- Local weather insurance policies that mirror the total lifecycle emissions of waste therapy, together with methane’s short- and long-term impacts.
- Above all, regulatory alerts should keep away from unintentionally shifting waste again to landfill, significantly within the context of EU ETS discussions.
Chopping methane quickly is crucial to gradual near- and long-term international warming, and to maintain Europe’s local weather targets inside attain.
Methane emissions from Europe’s landfills – Eventualities and Knowledge Challenges, obtainable at: https://www.prognos.com/en/projekt/methane-emissions-europe-landfills
Notes
[1] Landfill Directive
[2] And in some instances by 2040
[3] Put in capability of 500 MW, capability issue of 0.65 and emission issue of 1 kg CO2-eq/kWh
