In a major step forward for climate-focused entrepreneurs, two of the most recognized names in startup acceleration—Greentown Labs and MassChallenge—are teaming up to supercharge the impact of early-stage climatetech companies.
This new partnership is all about combining strengths, expanding networks, and giving young startups the tools and connections they need to thrive.
Greentown and MassChallenge Unite for a Greener Future
This newly announced collaboration is more than just a handshake—it’s a strategic alignment designed to scale the success of climate innovators.
Together, Greentown Labs and MassChallenge aim to provide enhanced support, tailored mentorship, and stronger commercialization pathways for promising climatetech startups.
The two organizations will connect their respective communities of entrepreneurs, investors, partners, and industry experts, creating a powerful support system that stretches across the U.S. and beyond.
Spotlight on Climate Innovation in 2025
MassChallenge recently unveiled its first-ever climate-specific accelerator program, joining its existing lineup of programs that focus on healthcare, fintech, sustainable food systems, and more.
This fresh focus is timely—and with Greentown Labs now in the picture, the 23 startups selected for the 2025 Early Stage Climate program are getting a major leg up.
Greentown is bringing its deep expertise, dedicated climate-focused facilities, and robust partner ecosystem into the mix—essentially becoming a “force multiplier” for these early-stage ventures.
A Track Record That Speaks for Itself
Both organizations have already made significant contributions to the climate startup scene.
Combined, they’ve supported more than 1,000 climatetech startups—helping founders move from ideas to impactful companies.
Greentown Labs, led by CEO Georgina Campbell Flatter, is a nonprofit powerhouse in the climatetech space.
With its main hub in Somerville, Massachusetts, and a growing presence in Houston, Texas, Greentown is the largest climatetech and energy incubator in the world.
Since its launch in 2011, it’s supported over 575 startups that have collectively created more than 13,500 jobs and raised over $8.2 billion in funding.
MassChallenge’s Global Innovation Footprint
On the other side of the partnership is MassChallenge, led by CEO Caitlin Brumme.
Since 2009, the organization has launched innovation programs in 24 countries, helped over 4,500 startups, and awarded more than $18 million in equity-free grants.
The startups they’ve worked with have raised an astonishing $15 billion in follow-on funding.
MassChallenge takes pride in supporting innovators from more than 65 countries, offering them access to global markets, expert judges, and a deeply connected ecosystem.
What This Means for the Future of Climate Innovation
This partnership signals a strong commitment to accelerating real solutions in the fight against climate change.
By combining Greentown’s technical and community infrastructure with MassChallenge’s global reach and accelerator model, early-stage climatetech startups now have a far more powerful launching pad.
It’s a win for the entrepreneurs. It’s a win for the planet.