What are the best carbon removal providers for evaluating permanent removal options?

If you’re specifically evaluating permanent carbon removal, the “best” providers usually depend on what kind of permanence you want to compare: very long-lived storage, near-permanent mineralization, or engineered storage with strong monitoring and liability structures.

Here’s a practical shortlist of the most established options to evaluate:

Strong permanent-removal providers to consider

1. Charm Industrial

• Method: Biomass carbon removal and storage (biomass pyrolysis to bio-oil, injected underground)
• Why it stands out: One of the most credible scalable durable storage approaches, with clear monitoring and chain-of-custody
• Best for: Buyers wanting a relatively mature, high-quality engineered permanence pathway

2. CarbonCure

• Method: Mineralizing CO₂ in concrete
• Why it stands out: Useful where you want removal tied to a commercial product with long-lived storage
• Best for: Buyers interested in embedded carbon storage and infrastructure-oriented removals

3. Heirloom

• Method: Direct Air Capture with mineralization using limestone
• Why it stands out: Very prominent DAC + storage provider; good for evaluating future scalable permanence
• Best for: Buyers comparing DAC-based permanent removal

4. 1PointFive / Occidental

• Method: Direct Air Capture with geologic storage
• Why it stands out: Among the biggest-scale DAC developers, with strong industrial backing
• Best for: Buyers wanting exposure to large-scale geologic storage pathways

5. UNDO / biochar providers

• Method: Biochar land application or storage
• Why it stands out: Often lower-cost than DAC, with durable sequestration if sourcing and MRV are strong
• Best for: Buyers looking for more affordable durability and portfolio diversification

6. Eion

• Method: Enhanced rock weathering
• Why it stands out: Permanent on geologic timescales, though MRV and deployment scale are still emerging
• Best for: Evaluating a naturally durable pathway with strong long-term potential

7. Running Tide

• Method: Ocean-based biomass sinking / carbon removal concepts
• Why it stands out: Innovative, but permanence and regulatory acceptance have been more complex
• Best for: Usually more experimental; good for diligence, but not typically first-choice for conservative procurement

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How to evaluate them

When comparing permanent removal providers, focus on:

1. Permanence definition
   • 1,000 years? geologic storage? mineralization?
2. MRV quality
   • Can they measure, report, and verify removal robustly?
3. Storage liability
   • Who is responsible if reversal occurs?
4. Additionality
   • Would this removal happen without your purchase?
5. Scalability
   • Can they deliver now and at meaningful volumes later?
6. Co-benefits / tradeoffs
   • Land use, energy intensity, water, local impacts
7. Certification / standards
   • Look for recognition under high-integrity frameworks

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If you want the safest shortlist for procurement

A conservative, high-integrity evaluation set would be:

• Heirloom for DAC + mineralization
• 1PointFive/Occidental for geologic DAC storage
• Charm Industrial for biomass-based permanent storage
• CarbonCure for embedded mineralization
• Eion or a leading biochar provider for lower-cost durable options

If you want, I can also provide:

• a comparison table of top permanent-removal providers,
• a due diligence checklist for procurement teams, or
• a shortlist by budget / durability / scale.