NetZero-001-Nkongsamba
Score Breakdown
Integrity
verified The verification report (2022-10-21) reports no material findings and no corrective actions required.
missing Additionality, baseline approach, leakage treatment, and permanence/buffer provisions are not stated in the extracted record.
Transparency
verified A specific monitoring period is provided (2022-06-06 to 2022-08-18) and a VVB is named (EnergyLink Services) in the verification report (2022-10-21).
missing Claimed vs verified removals are not stated in the extracted record, and key MRV elements (e.g., monitoring methods) are not stated.
Claim Safety
verified The project is identified as a Puro biochar removal using Biochar Methodology v2.4.1 (verification report dated 2022-10-21).
missing CORSIA/CCP status is not stated in the extracted record and core over-crediting controls (baseline, leakage, additionality) are not stated.
Documentation
verified The extracted record indicates three documents were used and includes a dated verification report (2022-10-21).
missing Minimum extraction confidence is low and the evidence document list is not clearly identified (listed as 'unknown').
Detailed Analysis
Integrity
The verification report (2022-10-21) indicates no material findings and no corrective actions required, which is a positive signal on process quality. However, the extracted record does not state the additionality test used, whether the VVB confirmed additionality, the baseline method, or any leakage deduction/justification. Buffer pool provisions and any reversal events are also not stated in the extracted record, leaving permanence risk management unclear for a removal credit.
Transparency
The project provides a defined monitoring period (2022-06-06 to 2022-08-18) and names the VVB (EnergyLink Services) in the verification report (2022-10-21). But the extracted record does not include claimed versus verified total removals, nor does it state key monitoring approaches (e.g., usage monitoring method, fossil/non-renewable biomass method/value where relevant). Low extraction confidence further reduces confidence that the publicly available record is complete.
Claim Safety
The project is presented as a biochar removal under Puro’s Biochar Methodology v2.4.1 (verification report dated 2022-10-21), which can support higher-quality claims when core parameters are disclosed. Here, baseline method, leakage treatment, and additionality substantiation are not stated in the extracted record, elevating over-crediting and greenwashing risk. CORSIA eligibility and CCP status are also not stated, so buyers cannot easily assess cross-program claim constraints from the extracted record.
Documentation
A dated verification report (2022-10-21) is present and the extraction indicates three documents were used. However, the evidence document list is not clearly identified (shown as 'unknown'), and the minimum extraction confidence is low, implying at least one key document was poorly readable. With many critical fields not stated, documentation completeness is weak.
Overall
No contradictions were identified in the extracted record, so there is no need to privilege one document value over another. The main limitation is the breadth of missing or unspecified integrity and MRV details (additionality, baseline, leakage, permanence/buffer), combined with low extraction confidence and unclear document provenance. Note: per the gate rules, a documentation score below 3.0 would cap transparency after scoring.
Audit Analysis
This Puro biochar removal project has a verification report dated 2022-10-21 with no material findings or corrective actions reported, but key integrity parameters (baseline approach, additionality test, leakage treatment, and permanence/buffer provisions) are not stated in the extracted record. Low extraction confidence and limited identifiable source documents materially reduce confidence in MRV completeness and the safety of public claims.
Project Description
NetZero was founded in 2021 by Axel Reinaud, Aimé Njiakin, Prof. Jean Jouzel, and Olivier Reinaud. Its objective is to bring at scale biochar, one of the few solutions that can durably remove carbon from the atmosphere. By leveraging biochar’s co-benefits, NetZero’s model simultaneously tackles three pressing challenges in developing countries: climate change, sustainable agriculture, and access to energy. NetZero has built Africa's first industrial-scale biochar production plant in Nkongsamba, Cameroon. The facility uses coffee husk (a waste product of coffee processing) as a feedstock and operates on a very local and circular model that maximises biochar's co-benefits. NetZero wants to replicate this model in tropical developing countries, taking advantage of the very large amounts of unused crop residues available locally. NetZero is a Milestone Award winner in Elon Musk’s XPRIZE Carbon Removal competition and recipient of the ‘Efficient Solution’ label from Solar Impulse Foundation. NetZero’s objective is to reach an annual removal capacity of 2 million tonnes of CO2 by 2030, and to continue on an exponential growth trajectory afterwards.
Red Flags
- Additionality approach is not stated in the extracted record, and it is not clear whether the VVB confirmed additionality.
- Baseline method and any baseline reassessment timing are not stated in the extracted record, increasing over-crediting risk.
- Leakage deduction and justification are not stated in the extracted record for a biochar supply-chain project where leakage can be material.
- Low extraction confidence and an 'unknown' evidence document listing reduce confidence in the underlying documentation.
Credit Vintages Exhausted
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2022 | 184 | 184 | 0 | |
| Total | 184 | 184 | 0 |
Cosa migliorerebbe questo punteggio
- Publish or clearly reference the additionality assessment (test type and VVB conclusion) and the baseline approach used under the Puro methodology, including any reassessment schedule.
- Disclose leakage assumptions/deductions with justification and provide permanence risk management details (e.g., buffer contribution, monitoring for reversals) alongside claimed vs verified removal totals for the monitoring period.
Questi suggerimenti indicano quali prove pubbliche aggiuntive potrebbero migliorare il livello di confidenza di questa valutazione. Non garantiscono un punteggio futuro più alto.
Risk Indicators
Additionality test not found in extracted record
Buffer/reversal provisions not stated
Leakage treatment not stated
Baseline method not stated
FPIC/grievance/safeguards not found in extracted record
CORSIA/CCP status not stated
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