EIF (ECOSYSTEM INTEGRITY FUND)
EIF (ECOSYSTEM INTEGRITY FUND) is a Series A, Series B and Series C+ fund in the US and global writing $3M–$10M checks into Healthcare, energy-transition, water-infrastructure, sustainable-agriculture, waste-management, renewable-energy, evs-and-transportation, agtech, mobility, green-chemistry, grid-modernization, sustainable-food-systems, climate-resilience-and-adaptation, nature-based-carbon-solutions, flood-resilience-technologies, ev-fleet-optimization, electric-vehicles, transportation, climate-resilience and flood-resilience.
- Stages
- Series A, Series B, Series C+
- Sectors
- Healthcare, energy-transition, water-infrastructure, sustainable-agriculture, waste-management, renewable-energy, evs-and-transportation, agtech, mobility, green-chemistry, grid-modernization, sustainable-food-systems, climate-resilience-and-adaptation, nature-based-carbon-solutions, flood-resilience-technologies, ev-fleet-optimization, electric-vehicles, transportation, climate-resilience, flood-resilience
- Check size
- $3M–$10M
- Invests in
- US-wide, global
- Round role
- Leads rounds
- Actively investing
- Yes
- Founded
- 2010
- Assets under management
- $650M+
- Website
- ecosystemintegrityfund.com
Thesis
The Ecosystem Integrity Fund (EIF) is a venture capital firm founded in 2010, dedicated to investing in early-stage companies that advance environmental sustainability. EIF's core belief is that economic and ecological sustainability are intertwined and represent a significant market shift. Their strategy involves identifying companies with scalable, capital-efficient business models that address critical pain points where business challenges intersect with sustainability problems, aiming to restore or preserve natural systems. EIF primarily leads or co-leads Series A and B rounds, taking board seats and offering operational and scientific expertise. They employ a systems-based approach, seeking incremental change within established systems and focusing on undervalued opportunities. EIF V, their fifth fund closed in June 2025 with $225 million, bringing total AUM to over $650 million. They invest in sectors like ClimateTech, energy transition, water infrastructure, sustainable agriculture, waste management, and more, across the US and globally. Typical check sizes range from $3 million to $10 million. The firm is known for its conservative and independent approach, resisting market hype.
Common questions
Does EIF (ECOSYSTEM INTEGRITY FUND) invest at the Series A stage?
Yes. EIF (ECOSYSTEM INTEGRITY FUND) lists Series A, Series B and Series C+ among the stages it invests in.
What check size does EIF (ECOSYSTEM INTEGRITY FUND) write?
EIF (ECOSYSTEM INTEGRITY FUND) writes $3M–$10M checks.
Where does EIF (ECOSYSTEM INTEGRITY FUND) invest?
EIF (ECOSYSTEM INTEGRITY FUND) invests in the US and global.