HercuTech Logo revised

In October 2016, WindSail invested in HercuTech, a Phoenix-based developer and manufacturer of an energy-efficient, insulated concrete panel wall system targeting the production home builder market.

Cambrian logo 2

In June 2016, WindSail invested in Cambrian Innovation, a Boston based wastewater treatment technology developer focused on the food and beverage industry.

Flowcastings Logo 3

In February 2016, WindSail invested in Flowcastings, based in Trebur, Germany. Flowcastings is bringing innovation to the development and production of complex, high-value turbine castings with applications in the global power generation and aviation industries.

Purple Carrot 2

In April 2016, WindSail invested in Purple Carrot, based in Needham, MA, which is a plant-based meal kit delivery provider servicing the majority of the continental U.S.


In March 2016, WindSail invested in Genability, a San Francisco based developer of the leading utility tariff database and rate engine enabling energy savings calculations and verification, rate optimization and load management.

LocoMobi logo2

In July 2015, WindSail invested in LocoMobi, a Toronto based technology company that offers a suite of hardware and cloud-based software products and services for parking and transportation management.

GrowthPoint Logo

In June 2015, WindSail invested in GrowthPoint Structures, a Los Angeles based manufacturer of ultra-energy efficient, environmentally sustainable modular buildings.

Wespire logo

In April 2015, WindSail invested in WeSpire, a Boston based developer of enterprise employee engagement software focused on sustainability, corporate citizenship, volunteering and well-being.


In December 2014, WindSail invested in Bright Power, a New York based provider of energy benchmarking, energy efficiency solutions and renewable energy system designs and installations to building owners and managers.


In December 2014, WindSail invested in Genera Energy, a Vonore, TN based biomass feedstock and logistics service provider.


In March 2014, WindSail invested in FastCap Systems, a Boston based manufacturer and supplier of innovative energy storage technologies.

XL Hybrids Logo

In November 2013, WindSail invested in XL Hybrids, a Boston based developer and supplier of a low-cost hybrid electric vehicle platform to large commercial fleets. WindSail was repaid in July 2016.

NG Logo 8

In July 2013, WindSail invested in NG Advantage, a Colchester, Vermont based supplier of compressed natural gas for industrial and commercial customers. WindSail was repaid in October 2014.

Protonex Logo

In March 2013, WindSail invested in Protonex, a Southborough, MA based provider of power management electronics and fuel cell solutions for portable, remote and mobile power. WindSail was repaid in October 2015.


In September 2012 and March 2011, WindSail invested in Next Step Living, a residential energy efficiency company, providing home energy diagnostics and improvements. WindSail was repaid in March 2013.