On Hold

Sectoral Scope

15. Livestock and manure management

Development ID#



Concept Note

This proposed methodology is globally applicable and applies to project activities that capture methane emissions from cattle with external means (e.g., using a wearable mask that is attached to an animal’s snout) and converting methane into less GHG-impacting components, such as CO2 and water. Methane is transformed into CO2 and water outside of the animal without affecting the animal’s rumen processes or milk/meat/manure productivity and quality. 


The concept note was submitted by ZELP Ltd (opens on external site) and is currently on hold, as per Section 3.2.5(2) of the VCS Methodology Development and Review Process, 4.3 (PDF). Verra will consider resuming the development of this concept note once there is publicly available and scientifically credible evidence that demonstrates the following:

  • The technology is able to consistently reduce methane emissions, and
  • The impact on animal safety and well-being.

Stakeholders interested in collaborating during methodology development or developing projects that this methodology might enable are encouraged to contact Please include the Methodology Development ID# CN0142 in the subject line.