Cutting CMM this decade is urgent and feasible

Reducing coal mine methane (CMM) emissions is presented as a critical, low-cost opportunity to avoid 0.2C of warming by 2050 and prevent over 180,000 premature deaths annually by 2030. While the IEA and UNEP estimate that between 54% and 63% of global CMM emissions can be mitigated by 2030, current action is negligible, with only 130 of 1,800 active mines reporting mitigation projects. The most cost-effective methods include drainage systems, where 62% of the 7,460 kilotonnes of abatement potential is available at negative net cost, and ventilation air methane (VAM) oxidation, which could reduce emissions by 23.7% with a $2.5 billion USD investment.

• Implementing all technically feasible methane mitigation measures could prevent more than 180,000 premature deaths every year by 2030, avert nearly 19 million tonnes of annual crop losses, and save nearly 53 billion hours of lost labour for outdoor workers due to extreme heat. The annual monetised value of these benefits exceeds $330 billion USD, which is significantly higher than the estimated annual implementation cost of $127 billion USD.
• There is a significant gap between the technical potential for CMM mitigation and actual implementation; only 130 out of 1,800 active mines have reported mitigation projects to the Global Methane Initiative. The IEA estimates that 54% of 2024 global CMM emissions can be mitigated by 2030 at an annual cost of $14.25 billion USD, with 12% achievable at no net cost. UNEP estimates are higher, suggesting up to 63% of CMM could be mitigated (27 million tonnes) for $10.8 billion USD per year.
• Ventilation air methane (VAM) oxidation, primarily using regenerative thermal oxidisers (RTOs), is the most effective method for overall emissions reductions, though it requires the highest upfront investment. An investment of approximately $2.5 billion USD in VAM oxidation could reduce CMM emissions by 9.5 million tonnes, or 23.7% compared to 2024 levels. UNECE research indicates that subsidies of $20 USD per tonne of CO2 equivalent for four to five years could make these projects investable.
• Drainage systems are the most cost-effective abatement option because captured methane is often concentrated enough to be used as fuel, generating revenue. Of the 7,460 kilotonnes of global abatement potential offered by drainage systems, approximately 62% is available at negative net cost, representing 95% of all negative cost abatement opportunities in the CMM sector.
• Anglo American's metallurgical coal mines in Queensland demonstrate the feasibility of pre-mining degasification, spending about $100 million USD annually (roughly $20 per tonne of CO2 equivalent) to abate 60% of reported methane emissions in 2023 and 70% in 2024.

APA

Ember (2026). Cutting CMM this decade is urgent and feasible. https://ember-energy.org/chapter/cutting-cmm-this-decade-is-urgent-and-feasible/

Chicago

Ember. Cutting CMM this decade is urgent and feasible. 2026. https://ember-energy.org/chapter/cutting-cmm-this-decade-is-urgent-and-feasible/.

Wikipedia

{{cite report |author=Ember |title=Cutting CMM this decade is urgent and feasible |date=29 April 2026 |url=https://ember-energy.org/chapter/cutting-cmm-this-decade-is-urgent-and-feasible/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{ember2026cutting, author = {{Ember}}, title = {{Cutting CMM this decade is urgent and feasible}}, institution = {Ember}, year = {2026}, month = apr, url = {https://ember-energy.org/chapter/cutting-cmm-this-decade-is-urgent-and-feasible/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }