Wildfire and Permanence: What Reversal Risk Means for Forestry Carbon Credits
A forest carbon credit is a promise that carbon stays stored. Fire is the fastest way to break that promise. How buffer pools, risk ratings and reversal rules actually work — and what a project developer in India should do about fire risk before verification, not after.
What happens to a carbon credit if the forest burns down?
A forest carbon credit is a claim that carbon is stored, not merely that it was once absorbed. If the forest burns, that carbon returns to the atmosphere — a reversal. Standards manage this by holding back roughly 10–25% of every issuance in a shared buffer pool, sized by a formal risk assessment. When a reversal occurs, the registry cancels buffer credits to cover the loss; buyers who already retired credits are not clawed back. The practical consequence for developers is that fire risk is not an abstract hazard — it is priced into every credit you issue, and it is rising in most of the world.
Every carbon credit type carries a version of the same question: did the tonne actually go away? For an avoided-emissions credit, the question is whether the emission would really have happened otherwise. For a removal credit — a forest, an agroforestry system, soil carbon — there is a second question, and it never stops being asked: is the carbon still there?
Fire is the fastest way for the answer to become no.
Why fire risk is a live and growing concern
The scientific case that fire emissions are increasing, and are larger than inventories assume, has strengthened considerably. A 2026 study in Science found that the recent surge in eastern Siberian methane emissions is driven principally by increased and prolonged wildfire, with grid cells showing more burned area also showing both higher methane fluxes and more strongly rising trends over 2010–2023.
Two findings from that work should concern anyone holding forest carbon risk:
- The estimated fire emissions were 6.7 to 41 times higher than standard bottom-up inventories — the datasets that inform most fire emissions accounting. Fire releases are being systematically underestimated, not overestimated.
- The projections point one way. Under SSP3-7.0, eastern Siberian emissions are projected to reach 97.5 ± 32.0 Tg of methane per year by 2081–2100. The authors are careful that these are conditional sensitivity estimates rather than forecasts — but the direction is not in doubt.
The paper also documents the 2023 Canadian wildfire season, where burned area exceeded seven times the four-decade annual mean and methane emissions rose 154% above the preceding 13-year average.
Why boreal findings matter to an Indian project
The regions differ, but the risk logic does not. Warming lengthens fire seasons, dries fuel and raises the probability of extreme fire weather in most fire-prone landscapes — including India's, where forest fire seasons in the central and Himalayan belts have been intensifying. A permanence assessment built on twenty-year-old fire return intervals is using a baseline that no longer describes the world.
How permanence is actually enforced
Standards handle permanence through three connected mechanisms.
1. Long commitment periods
Projects commit to maintaining carbon stocks for a defined period — commonly 30 to 100 years depending on standard and project type — with monitoring obligations that outlast the crediting period. The land cannot simply be cleared once credits are sold.
2. Risk assessment
Before issuance, the project is scored against a formal non-permanence risk tool covering three broad categories:
| Risk category | What is assessed |
|---|---|
| Internal | Management capability and experience, financial viability, project longevity, opportunity cost of alternative land use |
| External | Land tenure and ownership clarity, community engagement and dependence, political stability |
| Natural | Fire, pest and disease, extreme weather, geological risk |
Each factor scores points; the total determines the buffer contribution.
3. Buffer pool
The assessed percentage of every issuance — typically roughly 10–25% — is withheld and deposited into a registry-held pool. Those credits are never sold. When a project suffers a verified reversal, the registry cancels pool credits equal to the carbon lost.
10–25%
of issuance typically withheld into the buffer pool, based on assessed risk
30–100 yrs
typical permanence commitment period for land-based removal projects
154%
rise in methane emissions during the 2023 Canadian wildfire season vs the prior 13-year mean
Source: Zhu et al., Science (2026)
What the buffer pool does and does not do
It protects the buyer. A company that retired credits from a project that later burned is not asked to buy replacements. The pool absorbs it. This is the mechanism that makes forest credits sellable at all.
It protects the market's arithmetic. Reversals are made good in real credits, so a burned forest does not silently leave a hole in global accounting.
It does not protect the developer. Every buffer credit is a credit you cannot sell. A high fire-risk rating is a direct, permanent haircut on project revenue — which is the argument for taking fire management seriously at design stage rather than treating it as an operational afterthought.
It is only as strong as its funding. The pool is shared. If reversals across a registry's portfolio consistently outpace contributions, the pool's adequacy becomes a live question — and this is exactly the concern researchers have raised about buffer pools sized on historical fire rates in a climate where those rates are shifting.
The structural problem with historical baselines
Buffer contributions are calibrated on observed reversal rates. If fire frequency and severity are rising — and the evidence says they are — then pools calibrated on the past are systematically under-provisioned for the future. This is not a reason to avoid forest credits; it is a reason to treat a project's own fire management as a real risk control rather than relying on the pool to absorb everything.
What this means for Indian project developers
India's land-based carbon opportunity is concentrated in agroforestry, farm forestry, ARR (afforestation, reforestation and revegetation) and mangrove restoration. Fire risk varies enormously across these, and it is the single risk factor most often underestimated at feasibility.
Practical steps, in the order they should happen:
-
Assess fire risk at feasibility, not at validation. Historical fire incidence in the specific landscape, adjacency to fire-prone forest, prevalence of agricultural residue burning nearby, and the accessibility of the site for fire response. A high-risk site is not disqualifying, but it changes the economics and you should know before you spend.
-
Design the plantation to reduce risk. Species selection matters — some species are markedly more fire-tolerant. So do firebreaks, block layout, spacing, and keeping fuel loads down through active management. These decisions are cheap at design stage and impossible to retrofit.
-
Make the community your fire defence. In Indian conditions, the most effective fire control is almost always local. A community with a real economic stake in standing trees will detect and suppress fires faster than any external arrangement — which means benefit-sharing is not just an ethical question but a permanence control.
-
Instrument the monitoring. Satellite fire detection is freely available and near-real-time. A project that learns about a fire from a monitoring alert and responds is in a very different position, both operationally and at verification, from one that discovers the loss at the next field survey.
-
Plan the reversal response before you need it. Know how you will quantify a loss, who reports it to the registry, and on what timeline. Reporting a reversal promptly and accurately protects your standing with the registry; discovering it late looks like concealment whether or not it was.
-
Be straight with buyers. Sophisticated buyers already model permanence risk. A developer who presents a clear-eyed fire risk assessment and a real mitigation plan is more credible — and more bankable — than one who does not mention it.
The wider point
Permanence is where carbon removal is most different from emission reduction, and it is where most of the reputational damage in voluntary markets has originated. A tonne avoided is avoided. A tonne stored has to keep being stored, in a physical world that is becoming more hostile to storage.
That is not an argument against land-based projects — they remain among the most valuable things available in India, with co-benefits no engineered removal can match. It is an argument for pricing and managing permanence honestly: assessing fire risk on current climate rather than historical averages, designing for resilience from the start, and treating the buffer contribution as the real cost it is.
For how permanence factors into registry selection, see our comparison of Verra, Gold Standard and CCTS. For project design, our agroforestry guide covers species selection and FPO structures in detail.
Carbon Credit Consulting develops land-based carbon projects with permanence risk assessed and designed for from the feasibility stage onward. Explore our carbon offset project development and training and due diligence services, or talk to us about your project.
Sources
Frequently asked questions
Permanence is the requirement that a carbon removal actually lasts. A tonne of CO2 removed by a forest and then released five years later when the forest burns has not delivered a lasting climate benefit, even though a credit was issued for it. Standards address this by requiring projects to commit to long crediting and monitoring periods — commonly 30 to 100 years — and by holding back a share of every issuance in a shared buffer pool to cover losses.
A buffer pool is a shared insurance reserve of carbon credits. Every project contributes a percentage of the credits it would otherwise receive — determined by a risk assessment — into a pooled account held by the registry. Those credits are never sold. If any contributing project suffers a reversal, such as a fire destroying stored biomass, the registry cancels credits from the pool equal to the loss. The pool is shared across all projects on that registry, so a well-managed project's contribution can be used to cover another project's loss.
It depends on the project's assessed risk, and is typically in the range of roughly 10% to 25% of issuance under the major standards. The assessment scores internal risks such as management capability and financial viability, external risks such as land tenure disputes and community conflict, and natural risks including fire, pest, disease and extreme weather. A higher assessed fire risk directly raises the contribution, which means fire risk is not merely a hazard to manage but a real, quantifiable cost per credit.
Usually not. The standard process is to report the reversal, quantify the carbon lost, and have the registry cancel an equivalent number of credits from the buffer pool. Credits already sold and retired by buyers are not clawed back — the pool absorbs the loss instead. The project can normally continue if the land is replanted and monitoring resumes, though a large loss may reduce future issuance and raise the project's risk rating and buffer contribution.
About the author
Carbon Credit Consulting
Carbon advisory team
The Carbon Credit Consulting advisory team writes on India’s carbon markets — CCTS, CBAM, offset projects, GHG accounting and ESG/BRSR — turning fast-moving rules into practical guidance for businesses, exporters and FPOs.
- CCTS & CBAM advisory
- GHG Protocol & ISO 14064
- Verra & Gold Standard project experience
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