WindSail Capital is a Boston-based investment firm providing structured growth financing to established businesses advancing energy innovation, climate technology, and sustainability.
Financing Structured Around Your Business
Our investments typically take the form of senior-secured term loans, with financing structures tailored to each company’s operating needs, commercial milestones, and growth objectives.
We provide capital to revenue-generating businesses that may not yet meet conventional lending requirements or wish to avoid the dilution associated with additional equity financing.
Typically three-year, interest-only facilities structured around a company’s financial profile and capital needs.
Capital availability can be aligned with commercial and operational milestones, allowing funding to support a company’s evolving growth plan.
Our investments include modest warrant participation, providing a less-dilutive alternative to traditional equity financing.
Our financing can stand alone or complement an existing equity investment. Companies need not be raising institutional equity at the time of our investment.
Our structures generally do not require board seats or personal guarantees, allowing management teams to maintain control of day-to-day decisions.
Established Businesses. Clear Growth Opportunities.
We focus on commercial-stage companies with demonstrated market traction, experienced management teams, and attractive opportunities to scale.
We evaluate opportunities across a wide range of energy, climate, and sustainability-related sectors, recognizing that compelling businesses do not always fit neatly into traditional financing categories.
Let’s Discuss What’s Next.
Whether you’re expanding operations, pursuing new commercial opportunities, or evaluating alternatives to another equity raise, we’d welcome a conversation about how WindSail’s financing approach might support your plans.