| Pathway | Biochar |
|---|---|
| Country | Austria |
| Website | https://www.sonnenerde.at |
| sonnenerde | |
| Status | 🟢 Active (score: 75/100) |
| Company size | Small (10 to 49) (EU SME size class, derived from the LinkedIn size band; exact headcounts are not published) |
| CDR Focus | side_business |
| Registry-verified | Puro.earth (last issuance: 2024-03-31) |
About
Sonnenerde GmbH is an Austrian composting and soil-production company in Riedlingsdorf, Burgenland, founded in 1998, that also operates a biochar pyrolysis facility. In April 2025 it opened a new large-scale carbonization plant (“KOHLOSS”) that scales biochar output to around 2,000 tons per year, bound to roughly 4,000 tons of CO2. The company sells biochar carbon-removal credits via Puro.earth while its core business remains quality soil and compost products.
Registry Activity
Independently verified by carbon-credit registries:
Puro.earth
- 2 projects · Biochar, 2022 · crediting period 2020-02-01 → 2024-03-31 (expired)
Data from Puro.earth and CarbonPlan OffsetsDB (Verra, Gold Standard, ACR, CAR, ART, Cercarbono, Isometric). Refreshed monthly.
Registry Memberships
- Puro.earth
History
- 2026-10-05 — news mention: Sonnenerde: 85% efficiency 🙌🏻 That is what our EU LIFE demonstration plant delivered — day after day (source)
- 2026-09-15 — refresh: coresignal, screenshot
- 2026-05-11 — liveliness: 🟠 Suspect → 🟢 Active (source)
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: coresignal, screenshot, liveliness
- 2026-05-01 — liveliness: 🟢 Active → 🟠 Suspect (source)
- 2026-04-19 — reclassified: pathway=Biochar focus=side_business liveliness=🟢 Active (source)
- 2026-04-19 — refresh: coresignal, liveliness
- 2026-04-19 — liveliness: 🟢 Active → 🟠 Suspect (source)
- 2026-04-19 — reclassified: pathway=Biochar focus=supplier liveliness=🟢 Active (source)
- 2026-04-18 — reclassified: pathway=Biochar 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.