Eion
Eion is a climate tech company in United States, founded in 2020. It has raised $15.0M across 2 rounds, most recently a $3.0M Series A in 2025 (est.).
Eion Carbon | Carbon removal that checks all the right boxes
- Employees
- 11–50
- Founded
- 2020
- Business Model
- B2B
- Website
- eioncarbon.com
- Total Funding
- $15.0M
- Last Round
- $3.0M Series AJan 2025
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 2 funding rounds and 7 investors for this company. The full record is or through the API.
About
Eion removes atmospheric carbon dioxide by accelerating the Earth's natural mineralization cycle in partnership with farmers, ranchers, and existing agricultural systems. It crushes olivine minerals and applies them to working lands, where rain and soil acidity dissolve the material so it absorbs carbon dioxide for permanent storage. Eion differentiates its enhanced-rock-weathering approach through patented soil fingerprinting that directly measures removal using before-and-after soil samples and can support independent verification for carbon-credit issuance.
Summary
It lists 11–50 employees. It has raised $15.0M in total across 2 rounds, most recently a $3.0M Series A round in 2025 (est.). Investors include Growmark, Soma Capital and AgFunder.
Tech & App Stack
6 technologies & apps tracked
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Funding History
2025 (est.)
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Funding: Series A. Amounts, valuations, and investors where available.
Investors
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