| Pathway | Enhanced Weathering |
|---|---|
| Secondary pathways | Ocean CDR |
| Method | Ocean Alkalinity Enhancement |
| Country | Canada |
| Website | https://www.carbonrun.io/ |
| carbonrun | |
| Status | 🟢 Active (score: 80/100) — verified via isometric issuance on 2026-01-20 |
| 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 | Isometric (last issuance: 2026-01-20) |
About
CarbonRun is a Nova Scotia-based CDR startup founded in 2022 that deploys river alkalinity enhancement (RAE) — adding finely crushed limestone to acidified rivers to neutralize acid-rain damage while converting CO2 into bicarbonate that is transported to the ocean for long-term storage. The company operates the world’s first full-scale RAE project on the West River in Pictou County and signed a $25.4M / 55,000-tonne offtake with Frontier in September 2024, with Isometric certifying the first RAE protocol in 2025.
Registry Activity
Independently verified by carbon-credit registries:
Isometric
- 2 projects · Unknown · 76 tCO₂ issued · 22 retired · first issued 2026-01-20 ↗
Data from Puro.earth and CarbonPlan OffsetsDB (Verra, Gold Standard, ACR, CAR, ART, Cercarbono, Isometric). Refreshed monthly.
Registry Memberships
History
- 2026-10-13 — news mention: #rae #rae #cdrcoffeetalk | Yale Center for Natural Carbon Capture (source)
- 2026-10-12 — news mention: NULIFE GreenTech: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-10-03 — news mention: CarbonRun: In June 2025, we paid CarbonRun for 450 tons of river alkalinity credits that hadn’t been (source)
- 2026-09-29 — news mention: #rae #cdr #rae | Yale Center for Natural Carbon Capture (source)
- 2026-09-17 — news mention: Quantified Carbon Dioxide Removal from an Alkalinity Addition Field Trial in the Kvina River, Norway (source)
- 2026-09-06 — news mention: NULIFE GreenTech: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-09-06 — news mention: Frontier Climate: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-08-30 — news mention: NULIFE GreenTech: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-08-29 — news mention: Frontier Climate: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-08-16 — news mention: alterBiota: Today we issued a press release outlining our push into commercializing deltaC, highligh (source)
- 2026-08-15 — refresh: coresignal
- 2026-08-13 — news mention: Graphyte: Midway through the year and happy to report that the Frontier portfolio has removed 30,600 (source)
- 2026-08-01 — news mention: 350solutions: Here they are! The first CDR credits issued through Isometric ’s River Alkalinity Enha (source)
- 2026-08-01 — news mention: NULIFE GreenTech: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-07-30 — news mention: Graphyte: Midway through the year and happy to report that the Frontier portfolio has removed 30,600 (source)
- 2026-07-25 — news mention: NULIFE GreenTech: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-07-24 — news mention: Frontier Climate: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-07-22 — news mention: Charm Industrial: Midway through the year and happy to report that the Frontier portfolio has remove (source)
- 2026-05-21 — news mention: The supplier set is wider than people think. Lithos, UNDO, Terradot, InPlanet, and Alt Carbon do cro (source)
- 2026-05-21 — news mention: Foundation Opens Consultation On CCS EACs Methodology The Cynthia and George Mitchell Foundation ha (source)
- 2026-05-01 — liveliness: 🟡 Moderate → 🟢 Active (source)
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: coresignal, screenshot, liveliness
- 2026-05-01 — liveliness: 🟢 Active → 🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=Enhanced Weathering focus=supplier liveliness=🟢 Active (source)
- 2026-04-19 — refresh: coresignal, liveliness
- 2026-04-19 — liveliness: 🟢 Active → 🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=Enhanced Weathering focus=supplier liveliness=🟢 Active (source)
- 2026-04-18 — reclassified: pathway=Ocean CDR focus=supplier liveliness=🟢 Active (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.