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WindSail Capital Group
AddedFeb 13, 2024
UpdatedJul 16, 2026
WindSail Capital Group

WindSail Capital Group

Operating

WindSail: A growth capital provider investing in early-stage companies for energy innovation.

Location
Boston, MA, US
Founded
2013
Firm
Compare
Portfolio
Employees
Website

WindSail Capital Group is a growth capital provider specializing in early-stage companies focused on energy innovation and sustainability. The firm typically invests through debt financing and has participated in seed rounds and other unspecified series. Their investment sizes vary, with notable amounts including $5 million for Cambrian Innovation and HercuTech, $7 million for Nanoramic Laboratories, and $8 million for Ubees.

WindSail's portfolio includes companies like Genability, Next Step Living, and Velocia, reflecting their commitment to advancing sustainable energy solutions. The firm is led by key partners who bring significant expertise in the energy sector, offering not just capital but strategic guidance and industry connections to help portfolio companies scale effectively. WindSail's investment philosophy centers on fostering innovation that drives environmental impact and economic growth.

WindSail Capital Group - Portfolio Snapshot

Portfolio activity breakdown across disclosed investments and stages

Total Investments16
Current Portfolio Count13
Total Portfolio Exits2

Top Investment Stages

Debt Financing11 (68.8%)
Series Unknown4 (25.0%)
Seed1 (6.3%)

Stage Mix

Debt Financing 69%Series Unknown 25%Seed 6%

Concentration shown as share of disclosed investments by stage.

Recent Investments

Velocia logo

Velocia

Ubees logo

Ubees

Upstart Power logo

Upstart Power

Varentec logo

Varentec

BluePath Finance logo

BluePath Finance

LumiGrow logo

LumiGrow

Cycle of Development logo

Cycle of Development

Sighten logo

Sighten

HercuTech logo

HercuTech

Cambrian Innovation logo

Cambrian Innovation

Genability logo

Genability

GrowthPoint Global logo

GrowthPoint Global

Skystream Markets logo

Skystream Markets

Nanoramic Laboratories logo

Nanoramic Laboratories

Next Step Living logo

Next Step Living

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WindSail Capital Group - Classification

Also Known As
  • Windsail Capital Group, LLC
NAICS
  • 520000Finance and Insurance
  • 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
  • 523900Other Financial Investment Activities
  • 523990All Other Financial Investment Activities
  • 523999Miscellaneous Financial Investment Activities
SIC
  • 6700Holding And Other Investment Offices
  • 6720Investment Offices
  • 6722Management Investment Offices, Open-end
Show 5 more industry codes
NAICS
  • 525000Funds, Trusts, and Other Financial Vehicles
  • 523910Miscellaneous Intermediation
SIC
  • 6000Depository Institutions
  • 6790Miscellaneous Investing
  • 6799Investors, Not Elsewhere Classified