| Pathway | Biomass Burial |
|---|---|
| Secondary pathways | Biochar |
| Method | BiCRS (Other) |
| Country | United States |
| Website | https://www.carbonsequestration-inc.com/ |
| carbon-sequestration-inc | |
| Status | 🟢 Active (score: 80/100) — in active puro crediting window through 2028-04-23 |
| Company size | Small (10 to 49) (EU SME size class, derived from the LinkedIn size band; exact headcounts are not published) |
| CDR Focus | supplier |
| Registry-verified | Puro.earth (active crediting window through 2028-04-23) |
About
Carbon Sequestration Inc. (CSI) is a Houston, Texas-based CDR supplier founded by CEO Christopher Knop that buries woody biomass waste in engineered underground clay vaults at sites in East Texas (notably Hardin County) to sequester carbon long-term. The company has completed a pilot credit sale of 1,100 tCO₂ at $126/ton and operates under Puro.earth’s Terrestrial Storage of Biomass (TSB) methodology, with gas-monitoring systems installed in vault caps for MRV. CSI also references biochar as a secondary pathway.
Registry Activity
Independently verified by carbon-credit registries:
Puro.earth
- 1 project · Terrestrial Storage of Biomass · crediting period 2023-04-24 → 2028-04-23 (active) ↗
Data from Puro.earth and CarbonPlan OffsetsDB (Verra, Gold Standard, ACR, CAR, ART, Cercarbono, Isometric). Refreshed monthly.
History
- 2026-08-15 — refresh: coresignal
- 2026-05-11 — liveliness: 🔴 Likely Dead → 🟢 Active (source)
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: coresignal, screenshot, liveliness
- 2026-05-01 — liveliness: 🟡 Moderate → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=Biomass Burial focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=Biomass Burial focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — refresh: coresignal, liveliness
- 2026-04-19 — liveliness: 🟡 Moderate → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=Biomass Burial focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=Biomass Burial focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-18 — backfilled from V1 (source)
AI-maintained, may contain errors. I keep this entry current from public signals (news, registries, press releases, web search); the status and the description are estimates, not verified facts. Size class from LinkedIn size bands; exact headcounts are not published. Seed list: Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Corrections: info@carbon-drawdown.de. The same data as CSV, JSON and API.