The article titled “Q&A: What the ‘controversial’ GWP* methane metric means for farming emissions” was released on 3 October and examines the GWP* (Global Warming potential star) metric, a method for measuring methane’s climate impact that differs from the conventional GWP100 by accounting for the gas’s shorter atmospheric lifetime. It explains the scientific and policy debates surrounding GWP*, including arguments over its accuracy, the “no additional warming” concept, and its implications for climate targets and communication. 

The article examines how countries such as New Zealand, Ireland, the UK, and Australia are considering or implementing GWP*, and how this shift could impact the reporting and management of agricultural and livestock methane emissions. 

The geographical focus is global, with particular emphasis on agricultural contexts in countries exploring the use of GWP.

The article is relevant for the EU agri-food industrial stakeholders for the following reasons:

• Impact of GWP on emissions accounting – This could affect how farms and agri-food companies report their climate impact and meet EU climate targets.

• Influence on climate policies and regulation – If GWP* is adopted or referenced in EU policy, it may reshape greenhouse gas reduction requirements, potentially easing pressure on livestock producers with stable herds while increasing scrutiny on expansion.

• Strategic planning for compliance – Understanding how GWP* works enables companies to anticipate shifts in reporting obligations, carbon pricing, and sustainability certifications tied to methane emissions.

• Opportunities for industry positioning – The debate around GWP* highlights the need for more transparent communication on methane’s role in warming. 

• Companies that adopt transparent reporting and mitigation strategies could gain a competitive advantage and strengthen their sustainability credentials.

   

International policy trends – With countries such as New Zealand and Ireland already exploring GWP*, EU agri-food industrial stakeholders should closely monitor these developments, as they may influence future European climate frameworks and trade conditions.

Target audience?

• Policymakers, climate negotiators, and government agencies involved in greenhouse gas accounting and climate target setting.

• Researchers and climate scientists studying emissions metrics and their policy implications.

• Agri-food industrial stakeholders, including farmers, producer organisations, and agri-food companies, who may be affected by changes in methane reporting and regulation.

• NGOs and environmental advocacy groups focused on climate policy and agricultural sustainability.

Orla Dwyer