40 to 50% of current oil and gas related methane emissions could be avoided at no net cost.
The global marginal methane abatement cost curve describes the reduction potentials, and costs and revenues of measures, to mitigate methane emissions globally in 2015. It is technically possible to avoid around three quarters of the current 76 Mt of methane emissions. The cost of mitigation is generally lowest in developing countries in Asia, Africa and the Middle East. But in all regions reducing oil and gas methane emissions remains a cost-efficient way of reducing greenhouse gas emissions compared with other mitigation strategies.
Source: World Energy Outlook 2017
14 November 2017