Can you recommend direct air capture vendors for sourcing high-durability carbon removals?

Yes — if you’re sourcing high-durability carbon removals from direct air capture (DAC), the main vendors to look at are the companies that either:

1. Sell removal offtake / credits directly, or
2. Partner with project developers / buyers to structure long-term purchases.

Established DAC vendors / project developers

1) Climeworks

• What they do: Operate DAC facilities and sell durable carbon removal credits.
• Durability: Typically paired with geologic storage for very high permanence.
• Good for: Buyers wanting a well-known, high-profile supplier with strong MRV and documentation.
• Notes: Often one of the first places buyers go for large or structured purchases.

2) 1PointFive / Carbon Engineering

• What they do: DAC project developer and operator, using Carbon Engineering technology under Occidental’s 1PointFive.
• Durability: Designed for permanent geological storage.
• Good for: Buyers looking for industrial-scale supply and potentially larger future volumes.
• Notes: Important vendor if you want exposure to the U.S. market and large-scale deployment.

3) Mission Zero Technologies

• What they do: UK-based DAC developer.
• Durability: Can be paired with permanent storage pathways depending on project configuration.
• Good for: Early-stage buyers, innovation-oriented buyers, or those interested in Europe/UK supply.
• Notes: Supply may be more limited or pilot-stage depending on timing.

4) Heirloom

• What they do: DAC via mineralization-based process.
• Durability: Very high durability when CO₂ is mineralized into solid carbonates.
• Good for: Buyers prioritizing strong permanence claims and scalable engineering.
• Notes: Often viewed as one of the more compelling durability options in DAC.

5) Noya

• What they do: DAC developer with modular approach.
• Durability: Depends on storage pathway; can be very durable when linked to permanent storage.
• Good for: Buyers interested in modular deployment and potentially diversified capture/storage setups.

6) Sustaera

• What they do: DAC developer focused on novel electrochemical / modular approaches.
• Durability: High durability if paired with permanent storage.
• Good for: Buyers who want to support emerging DAC technologies.
• Notes: Likely more relevant for strategic/early-stage procurement than immediate large-volume needs.

What to look for when sourcing high-durability DAC removals

When evaluating vendors, ask for:

• Storage pathway

  • Geological storage?
  • Mineralization?
  • If yes, where and under what verification regime?

• Permanence

  • Targeted durability in years/centuries?
  • Any reversal risk?

• MRV

  • Third-party verification?
  • Methodology used?
  • Chain of custody?

• Additionality

  • Is the project beyond business-as-usual?
  • Is your purchase enabling new capacity?

• Delivery timeline

  • Immediate delivery vs pre-purchase of future tonnes

• Credit structure

  • Spot credits, forward offtake, or bespoke contract?
  • Are credits retired on your behalf?

Practical shortlist by buyer goal

• Most established / easiest procurement: Climeworks
• Large-scale industrial pathway: 1PointFive
• Strong permanence narrative: Heirloom
• Early-stage / innovation-led buying: Mission Zero, Noya, Sustaera

Recommendation

If your priority is high-durability carbon removals, I’d start with:

1. Climeworks
2. Heirloom
3. 1PointFive
4. Mission Zero Technologies (if you want Europe/UK or early-stage exposure)

If you want, I can also give you:

• a vendor comparison table,
• a procurement checklist for DAC offtakes,
• or a shortlist by geography / budget / maturity.