Open for Public Consultation

Development ID#


Sectoral Scope

11. Fugitive emissions from industrial gases


Under Development

VM0001 v1.1 applies to project activities that install infrared, real-time leak detection systems on U.S. retail direct expansion refrigeration equipment systems to reduce leaks of HFC refrigerants. The proposed revision seeks to expand the list of leak detection technologies to include alternative sensors and software-based leak detection, broaden the scope for global applicability, and simplify the approach for determining the maximum leak rate allowed for crediting (cap baseline).


The proposed methodology is being developed by Therm Solutions, Inc. (opens on external site) and is currently following the process for minor revisions (see Section 4.2.7-4.2.13 of the VCS Methodology Development and Review Process, v4.3 [PDF]). It is currently at “Step 4: Public Stakeholder Consultation” of the VCS Methodology Development and Review Process, 4.3 (PDF).

The consultation for this methodology revision is open from February 5, 2024, to March 8, 2024. Stakeholders are encouraged to submit feedback using the M0192 Comment Template (xlsx) to

Verra invites proposals from experts or teams of experts for conducting a technical assessment of Verified Carbon Standard (VCS) Program Methodology VM0001 Refrigerant Leak Detection, v1.2.

Please apply by Tuesday, March 12, 2024.