Greentown Labs is the largest climatetech startup incubator in North America, providing entrepreneurs with the community, resources, and connections they need to launch and scale world-changing climatetech companies. With incubator locations in Somerville, MA, and Houston, TX, Greentown Labs supports a vibrant ecosystem of innovators dedicated to developing solutions for the biggest climate challenges across GHG emissions reduction, resiliency, and adaptation. As a 501(c)(3) nonprofit, Greentown Labs is committed to fostering a diverse and inclusive community and accelerating the transition to a sustainable future.
The Somerville headquarters serves as Greentown Labs' flagship incubator, housing a significant portion of its member startups, extensive lab facilities, event spaces, and the primary administrative and operational teams. It's the nerve center for program development and partner engagement.
A 100,000 sq. ft. facility featuring state-of-the-art wet labs, dry labs, a machine shop, electronics lab, prototyping space, co-working areas, and large event spaces. The building is a repurposed former manufacturing plant, reflecting a commitment to sustainability through adaptive reuse.
Highly collaborative, mission-driven, and innovative. The HQ fosters a strong sense of community among startups, staff, corporate partners, and investors, with an emphasis on knowledge sharing and mutual support to tackle pressing climate issues.
As the original and largest Greentown Labs location, the Somerville HQ established the model for climatetech incubation in North America. It has been instrumental in nurturing hundreds of startups and serves as a global example of a successful climatetech ecosystem.
While Greentown Labs' physical incubators are located in Somerville, MA, and Houston, TX, its influence and network are global. Greentown Labs supports startups with international ambitions and collaborates with a worldwide network of partners, investors, and climatetech ecosystems. They run global programs and facilitate connections for their member companies to scale solutions internationally, thereby supporting climate action on a global scale.
444 Somerville Ave
Somerville
MA
USA
Address: 4200 San Jacinto St, Houston, TX 77004
To connect climatetech startups with Houston's unparalleled energy industry expertise, corporate partners, investors, and talent pool, driving innovation in areas critical to achieving a low-carbon future for the Gulf Coast region and beyond.
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As of April 2025, Greentown Labs' leadership includes:
Greentown Labs has been backed by several prominent investors over the years, including:
Greentown Labs has maintained a relatively stable core executive team, with some strategic internal promotions and role expansions to support its growth and impact. For specific announcements, refer to Greentown Labs' official news channels.
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Greentown Labs primarily uses the email format of the employee's first initial followed by their last name, at the greentownlabs.com domain. This is a common format for organizations.
flast@greentownlabs.com
Format
kknobloch@greentownlabs.com
Example
90%
Success rate
Greentown Labs Blog • May 7, 2024
Greentown Labs celebrated with its member company Electric Hydrogen (EH2) the opening of EH2's new 1.2 GW electrolyzer Gigafactory in Devens, MA. This marks a significant step in scaling green hydrogen production....more
Greentown Labs Blog • April 30, 2024
Greentown Labs revealed the cohort for its Greentown Go Make 2024 accelerator program, focused on advancing sustainable manufacturing innovations. The program connects startups with industry leaders like Stanley Black & Decker....more
Greentown Labs Blog • September 20, 2023
Greentown Labs Houston was awarded $50,000 as part of the SBA's Growth Accelerator Fund Competition, recognizing its role in fostering innovation and providing resources to climatetech startups....more
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