Greentown Labs and Energytech Nexus Announce Strategic Ecosystem Partnership to Support Climate and Energy Startups

Leading startup-support organizations to strengthen Houston ecosystem by enhancing founders' access to investors and capital

HOUSTON, Sept. 18, 2025 /PRNewswire/ -- Greentown Labs, the world's largest climatetech and energy startup incubator, and Energytech Nexus, a global community for energy and decarbonization founders, today announced a unique, collaborative partnership to strengthen Houston's support ecosystem for early-stage startups.

This partnership will advance the organizations' goals of transformationally accelerating climate and energy startups' growth—delivering more energy with less emissions; job creation and economic prosperity; and resilient, adaptive communities. Greentown and Energytech Nexus are putting into action their belief that breakthroughs don't scale in isolation—they scale when entire ecosystems move together.

The partnership is a commitment to collaborate together on an ongoing basis. Energytech Nexus will move into Greentown and open a designated investor lounge, which will host regular fundraising meetups and investor office hours. It will also launch a new AI-driven investor platform, Cephyron IRM, to better connect early-stage technologies to sources of capital; Greentown members will gain early access to the platform.

"Greentown Labs is the nexus for the energy transition, where startups can gather, collaborate and grow. Positioning our own extended community within the hallowed walls of Greentown will further foster the creation of authentic connections between founders and reduce friction to critical resources, bringing the village together will only accelerate the flywheel on innovation here in Houston, Texas," said Jason Ethier, Energytech Nexus's Founder Super Connector and Founding Partner.

This partnership is a continuation of long-standing ties between the two organizations. Ethier was a leader at one of the first startups to join Greentown at its founding in Cambridge, Mass. in 2011 and previously served on the incubator's founding board of directors. Ethier and fellow Energytech Nexus Founding Partner Juliana Garaizar held leadership positions in the early days of Greentown Houston, which opened in 2021, and were instrumental in bringing Greentown to the city.

"This partnership has been a long time coming—our organizations are kindred spirits that need to be working together to enhance the entrepreneurial support systems available to climate innovators in Houston," said Lawson Gow, Greentown's Head of Houston. "Capital is a top priority for climate and energy founders, and this team-up will directly address this challenge."

Startups interested in tapping into these offerings from Greentown and Energytech Nexus can get in touch here.

About Greentown Labs
Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation and commercialization by empowering entrepreneurs and enabling collaboration. As the largest climatetech and energy startup incubator in the world—with locations in Somerville, Mass. and Houston, Texas—Greentown convenes the climatetech ecosystem to provide entrepreneurs the community, connections, labs, and resources they need to thrive. Greentown is home to more than 200 startups and has supported more than 625 since its founding in 2011; these startups have collectively created more than 16,500 jobs and raised more than $9.6 billion in funding. For more information, visit www.greentownlabs.com or follow Greentown on LinkedIn.

Greentown Media Contact:
Reena Karasin
Senior Director of Communications and Marketing
rkarasin@greentownlabs.com

About Energytech Nexus
The EnergyTech Nexus is a global energytech hub on a mission to solve the energy trilemma of energy security, sustainability, and affordability by connecting founders, investors, and civic and industrial stakeholders. We are a community of founders, professionals, corporates, and investors that help each other form authentic connections, grow on our leadership journey, and gain access to critical resources.

Energytech Nexus Media Contact:
Sana Hasan
Head of Marketing and Communications
sana.hasan@energytechnexus.com 

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SOURCE Greentown Labs