Overview

What they do
WindSail Capital Group is a leading provider of growth capital to companies advancing energy innovation and sustainability across a wide range of industries. WindSail's unique investment approach provides companies with flexible financing solutions that facilitate growth while minimizing dilution.
windsailcapital.com
What they look for
Our unique investment approach provides companies with flexible financing solutions that facilitate growth while minimizing dilution, filling a critical gap in the market for mission-driven businesses.
windsailcapital.com
Stage
Series A, Series B+
windsailcapital.com
Sectors
AI, Climate, SaaS, Food and agriculture, Mobility and logistics, Proptech
windsailcapital.com
Based
Boston, US
windsailcapital.com

Sources

2026-08-28windsailcapital.comWindSail Capital is a leading provider of growth capital to companies advancing energy…

Portfolio, cheque size and the rest

The 23 companies they have backed that we can see, the cheque they write, and whether they are deploying right now.

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