Implementing the EU Methane Emissions Regulation through policy-relevant emissions data and a collaborative approach.

Methane emissions are a major driver of near-term climate warming across multiple sectors, and the European Union Methane Emissions Regulation (EUMER) represents a critical and timely policy instrument to address methane emissions from fossil fuels produced in the EU as well as those supplied to the EU. As EUMER enters its phased implementation, the operationalization of its wide-ranging and technically complex regulatory requirements necessitates the development of new data workflows, coordination mechanisms, and cross-disciplinary approaches to support actionable and accessible knowledge for a broad set of stakeholders beyond public authorities.

This contribution frames the implementation of EUMER as a data-driven process that requires bringing together distinct perspectives from industry, regulators, and local communities. Drawing on experiences from civil society initiatives that establish networks of organizations assessing and tracking implementation progress across the EU, we examine how empirically based data tools are being used to increase transparency and support effective mitigation. We further analyse emerging institutional configurations and collaborative practices that enable stakeholder engagement and regulatory oversight. We discuss key challenges related to data accessibility, transparency, comparability, and communication in the context of methane reporting and mitigation requirements, including issues arising from diverse emission sources, supply chains, and institutional responsibilities. Particular attention is given to the integration of multiple data streams - including Earth observation products, facility-level reporting, and international datasets such as those developed by the International Methane Emissions Observatory (IMEO) - to support the design and evaluation of affordable and accessible monitoring tools.

Our work will illustrate how this data-driven, multi-stakeholder implementation framework for methane mitigation can serve as a blueprint for similar approaches for emissions from other sectors and gases.