The Integrity Council for the Voluntary Carbon Market has approved two more Verra methodologies under its Core Carbon Principles, the quality screen that now anchors the bid side of the voluntary carbon market. The decision, announced by Verra on 12 August, covers VM0051 Improved Management in Rice Production Systems v1.1 and VMR0016 Flaring or Use of Landfill Gas v1.0, a revision of the legacy CDM methodology ACM0001. For buyers, the significance is less the two approvals themselves than where they land: the CCP label is moving deeper into methane abatement, one of the highest-volume and most contested corners of carbon credit supply.

What Exactly Was Approved

VM0051 credits projects that adjust water and crop management in flooded rice systems, typically through alternate wetting and drying, to curb methane emissions from paddies. The approved version is v1.1, a revision Verra published in July to align the methodology with VCS Version 5 rules; the original v1.0 was inactivated on 1 August, so projects registering or renewing crediting periods now must use the version the ICVCM has cleared.

VMR0016 is Verra’s in-house revision of ACM0001, the workhorse landfill gas methodology inherited from the Clean Development Mechanism. It credits projects that capture landfill gas and flare it, convert it to energy, or route it into gas networks. Credits from projects using either methodology are eligible for CCP labels provided they meet all eligibility conditions set by the ICVCM.

Both methodologies target methane, a greenhouse gas roughly 28 times more powerful at trapping heat than CO2, as Verra’s announcement notes. That potency is why methane categories carry outsized weight in credit supply, and why integrity screening matters more here than almost anywhere else.

Rice: A New CCP Category With a Short History

Rice cultivation is estimated to account for around 7% of global methane emissions, according to studies referenced by the ICVCM, and the category only entered the CCP perimeter this year. The first rice methodology approved was Gold Standard’s adjusted water management methodology, cleared by the ICVCM Governing Board on 29 January 2026 with specific conditions on how additionality is demonstrated and how soil organic carbon loss risk is accounted for.

Verra’s entry is notable because VM0051 is already operational. The first project under the methodology, an alternate wetting and drying project in An Giang province in southern Vietnam developed by Green Carbon Inc., was listed in April 2025. The methodology also picked up approval from ICAO for use under CORSIA earlier this year, giving it a compliance demand channel alongside the voluntary one. A CCP label now adds the third and, for many corporate buyers, decisive credential.

Landfill Gas: Replacing a Legacy Workhorse

Landfill gas was among the very first categories to receive CCP approval when the ICVCM began methodology decisions in mid-2024, alongside ODS destruction. But those early approvals covered existing methodology versions. VMR0016 is different in kind: it is Verra’s own revision of ACM0001, part of a broader effort to rebuild inherited CDM methodologies under current VCS rules rather than continue crediting under legacy text.

For the market, the practical question is migration. ACM0001 in its various versions underpins a large share of historical landfill gas issuance. A CCP-approved successor gives project owners a path to keep credits label-eligible as buyers tighten procurement screens, and gives buyers a cleaner answer when auditors ask which methodology version sits behind a landfill gas credit.

What This Means for Buyers and Developers

The immediate effect is on supply composition. CCP-Eligible programs already cover an estimated 95% of cumulative voluntary market issuances, but coverage at the program level is not the same as coverage at the methodology level. Each approval like this one converts more of the live project pipeline into label-eligible supply, in categories that corporate buyers actually purchase at scale.

For buyers, the implication is that “no CCP-labelled options exist” is becoming a weaker excuse in methane categories. Rice and landfill gas credits with the label can now be specified in procurement policies, and credits without it will increasingly need a price concession or a documented reason. For developers, the calculus runs the other way: registration under a CCP-approved methodology version is becoming table stakes for accessing quality-screened demand, which argues for migrating existing landfill projects to VMR0016 and structuring new rice projects under VM0051 v1.1 from the start.

What to Watch

Three markers will show how much these approvals matter. First, the pace of project migration: how many existing landfill gas projects request crediting under VMR0016 rather than legacy ACM0001 versions. Second, the issuance pipeline under VM0051, particularly whether the Vietnam project and its followers convert listing into labelled credits at volume. Third, pricing: whether CCP-labelled rice and landfill gas credits open a measurable premium over unlabelled supply in the same categories, which would confirm that the label is doing economic work and not just reputational work.

The CCP framework was built to answer the market’s oldest question: is this credit real. Extending that answer into methane, where volumes are large and scrutiny is intense, is the clearest sign yet that the label is becoming the default grammar of voluntary carbon procurement.