Climeworks

Does the core business genuinely avoid or reduce emissions, or build climate resilience? Share of revenue that is actually 'green'. Fossil-dependent models score low.

The core business — pulling CO₂ directly from ambient air and mineralizing it underground via Carbfix — is the highest-permanence form of carbon removal commercially deployed, and the technology is real; however, actual 2024 throughput at Mammoth (~105–876 tonnes against a 36,000-tonne nameplate) reveals a severe execution gap, and costs near $1,000/tonne mean the climate impact per dollar spent is extremely low relative to alternatives, capping the score.

Credible, science-based targets (SBTi), a real net-zero plan with progress to date, and CDP disclosure — not just a dated press release.

No publicly confirmed SBTi-validated near-term or net-zero targets were found for Climeworks itself; the company publishes roadmap ambitions (megaton-scale by 2030, gigaton by 2050) but these are marketing milestones, not externally validated science-based emissions reduction targets for its own operational footprint, and Climeworks' own sustainability report acknowledges that corporate operations currently produce more emissions than its plants remove.

Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.

Climeworks publishes an annual sustainability report and engages in community outreach for Project Cypress in Louisiana; it has no identified fossil lobbying or supply-chain labour scandals, and plants run on Icelandic geothermal power; however, the company admits its aggregate corporate carbon footprint (travel, construction, offices) currently exceeds what its plants remove, presenting a meaningful operational ESG gap for a company marketing itself as a carbon removal leader.

Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.

Climeworks leads the DAC sector in MRV rigour: it was the first DAC company certified under the Puro Standard (audited by DNV), issues CORCs on a public registry with lifecycle tracking, received an AAA BeZero rating for Orca, and publishes a detailed sustainability report; however, Mammoth's actual 2024 output figures are disputed or incomplete in public disclosures, and no CDP disclosure score was found, limiting a top-tier transparency rating.

Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.

No fossil lobbying, environmental litigation, pollution incidents, or governance scandals were found; the main integrity deductions are: (1) Mammoth dramatically underdelivered vs. marketed capacity in 2024, raising questions about forward-sold credit validity; (2) corporate operations net-emit more CO₂ than the plants remove, an irony the company acknowledges; (3) a 22% workforce reduction in May 2025 triggered partly by US policy reversal and overbuilding, suggesting overoptimistic projections were marketed to buyers and investors.