Seaweed Generation: Sinking Sargassum for Carbon Dioxide Removal
CT-518
Score Breakdown
Integrity
missing Additionality, baseline approach, leakage treatment, and reversal risk management were not found in the extracted record due to missing documents
inferred Project type implies non-trivial permanence and monitoring challenges (biomass sinking), but no evidence was available to assess them
Transparency
missing No VVB, monitoring period, or quantified MRV outputs were found because no evidence documents were captured
missing Registry/public-data completeness cannot be assessed from the extracted record
Claim Safety
missing No evidence was found on eligibility/labels (e.g., CORSIA/CCP) or safeguards against over-crediting because documents are missing
inferred Contribution crediting may reduce offset-claim risk, but without documentation the claim framing cannot be verified
Documentation
missing Zero documents were used in extraction, leaving major evidence gaps
missing Low extraction confidence suggests document readability/quality issues
Detailed Analysis
Integrity
No official documents were captured in the extracted record (evidence documents list is empty), so additionality testing, baseline method, leakage treatment, and any permanence/reversal provisions cannot be verified. With low extraction confidence, even if documents exist elsewhere, the current evidence base is insufficient to support integrity claims. This warrants a very conservative integrity score.
Transparency
Because no documents were extracted, there is no verifiable information on the VVB, monitoring period, monitoring methodology, or any comparison of claimed versus verified removals. Registry completeness and public transparency cannot be assessed from the extracted record. The low extraction confidence further reduces confidence in any implied transparency.
Claim Safety
No extracted documentation supports how credits are framed (including whether contribution claims are properly bounded) or whether the project is eligible under programs like CORSIA/CCP. Without baseline and MRV details, over-crediting risk cannot be ruled out and must be treated as high. As a result, claim safety is scored very low.
Documentation
The extracted record shows zero documents used and low extraction confidence, indicating severe documentation gaps and/or unreadable source material. Key expected documents (PDD, validation/verification reports, monitoring reports) were not found in the extracted record. This drives the documentation score close to the minimum.
Overall
There are no listed contradictions in the extracted record, but this is not reassuring because there are also no documents to cross-check. Given the absence of evidence and low extraction confidence, the overall score is driven by uncertainty and inability to substantiate core quality criteria. Note: under the gate rules, a documentation score below 3.0 would cap transparency after scoring.
Audit Analysis
The extracted record contains no usable project documentation, so core quality elements (additionality, baseline, MRV, leakage, and permanence) cannot be substantiated. With low extraction confidence and zero documents captured, the risk of over-crediting and weak claims is high by default.
Project Description
Seaweed Generation will deliver real, long-lasting, scalable CDR using solar driven robotics (the AlgaRay) to restore the Earth’s natural balance. The AlgaRay is a simple, solar powered system, designed with automation and rapid scalability in mind. Travelling at around 3knts, it takes less than 1 minute to fill with Sargassum within a Sargassum mat. Once full, the AlgaRay drops to 200m (Sargassum becomes negatively buoyant at 135m), drops the biomass, and returns to the surface to refill. The Sargassum will reach 1000m in approximately 1.5 hours, travelling downwards at a rate of 10m a minute.The whole capture, sinking and release sequence is captured on video and bundled with biomass measurement, timedate and GPS data for reporting purposes. Seaweed Generation is conducting a 2023 pilot launch of the Algaray in the Caribbean. We are selecting sinking sites that are within close proximity to the coast (allowing us to intercept Sargassum before it washes up onto shore) and with depths of >4,000m with no upwelling currents.
Red Flags
- No project documents were available in the extracted record (0 documents), preventing validation of baseline, additionality, MRV, leakage, and permanence claims
- Low extraction confidence indicates at least one key document was poorly readable, further reducing reliability
Credit Vintages
Nessuna emissione registrata sul registro.
Cosa migliorerebbe questo punteggio
- Provide and extract the PDD plus the latest validation/verification and monitoring reports so additionality, baseline, leakage, and permanence provisions can be assessed
- Disclose quantified MRV details (monitoring period, methods, uncertainty, and verified vs claimed removals) and any program eligibility/claiming guidance (e.g., CORSIA/CCP status and contribution-claim rules)
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
No additionality evidence found
Reversal risk not evidenced
No leakage treatment found
No baseline method found
No safeguards evidence found
Eligibility/status not evidenced
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