For Stakeholders

Methodology for ARR and Module for Estimating Leakage from ARR Activities: Consultation

The Methodology for Afforestation, Reforestation, and Revegetation (ARR) and the Module for Estimating Leakage from ARR Activities are now open for public consultation until 28 January 2022.

The methodology allows for two quantification approaches, depending on whether there is a change in land use in the project area. It will include a Module for Estimating Leakage from ARR Activities to account for leakage related to the displacement of agricultural activities that were implemented before the start of the project.

The methodology was developed by revising existing afforestation and reforestation methodologies from the Clean Development Mechanism and associated tools. It incorporates innovative approaches to standardize additionality and crediting baselines, to account for leakage, and to accommodate small-scale tree planting activities.

Afforestation, reforestation, and revegetation activities are crucial to tackling climate change because they remove carbon while also restoring degraded ecosystems and improving soil conditions.

If you have any questions, please contact Abel Alan Marcarini, Senior Program Officer (

On 16 December 2021, Verra hosted a webinar about the proposed methodology.

Watch the Recording

Validation/Verification Bodies Proposals

Verra is still accepting proposals for validation/verification bodies (VVBs) to conduct a technical assessment of the draft Methodology for Afforestation, Reforestation, and Revegetation (ARR). Read the Request for Proposals for VVBs for the Methodology for ARR Projects

Our Work

Photo: Darren Centofanti

Climate, Community & Biodiversity Standards

Supporting land use projects in addressing climate change, supporting local communities and smallholders and conserving biodiversity

Learn More >

Jurisdictional and Nested REDD+ (JNR)

Driving private investment in REDD+ at multiple scales

Learn More >

California Offset Project Registry

The Offset Project Registry (OPR) facilitates the participation of offset projects within the California cap-and-trade program

Learn More >