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Dear Friends of Greentown Labs,

We’re thrilled to introduce the 19 new climatetech startups that joined our community over the past quarter! With technologies to decarbonize the key greenhouse-gas-emitting sectors and build resilient communities, these startups are at the forefront of climate action.

Here’s just some of what these newest members are working on:

Agrilab Technologies offers compost-aeration and heat-recovery (CAHR) products in modular platforms.
it’s electric’s Level-2 EV chargers connect behind-the-meter to draw spare electrical supply from adjacent buildings, allowing for installation at zero cost to property owners or cities and revenue-sharing with building owners.
PLASENE offers a platform that converts plastic waste into liquid fuel and low-carbon hydrogen by leveraging proprietary catalysts and modular, scalable, pre-engineered units.
RotorVault is commercializing cost-competitive and sustainable energy-storage and load-following solutions for grid-scale and commercial applications.

Several of these 19 startups joined through the third year of ACCEL—an accelerator from Greentown and Browning the Green Space designed to support BIPOC-led climatetech startups by offering access to funding, networking connections, resources, and opportunities that structural inequities put out of reach. Greentown Boston hosted a fantastic kickoff event for the program earlier this month; check out a video recap.

Meanwhile, the focus at Greentown Houston this month has been CERAWeek. We were excited to have more than 35 Greentown startups showcase at the Innovation Agora, and dozens of members joined the climatetech ecosystem for a night of networking at our annual CERAWeek Transition On Tap. Our team also enjoyed attending a slew of events throughout the week!

Speaking of events, we recently announced the dates for Greentown’s 2025 Climatetech Summit and the annual Houston Energy and Climate Startup Week, of which Greentown is a lead partner. Read on for details.

We hope to see you at an event soon, and as always, thank you for your commitment to climate action!

Warmly,
The Greentown Team

ICYMI: Climatetech Summit 2025 Announced

The sixth annual Greentown Labs Climatetech Summit will be Nov. 4 in Houston and Nov. 6 in Boston!

Climatetech Summit is our largest event of the year and the premier gathering of climate and energy entrepreneurs, investors, corporate leaders, and policymakers accelerating the energy transformation.

The world is at an inflection point: there’s an unprecedented demand for energy globally, emissions must be drastically reduced, and resilience has never been more critical. We’ll dive into these challenges and opportunities together at Climatetech Summit, and emerge with tangible actions to foster more collaboration.

Step into our incubators for a day of hands-on exploration of climatetech solutions from 200+ startups, insightful keynotes and discussions with industry leaders, and unparalleled networking opportunities!

If you want to get involved with the highest-visibility event of the year at Greentown, please reach out to learn about sponsorship opportunities.

Member Milestones

What does climate action look like? Climatetech startups receiving funding, winning awards, deploying their tech around the world, and more! Read a roundup of our members’ recent milestones here and check out some highlights below:

Phlair, a Carbon to Value Initiative participant developing an electrochemical approach to direct air capture, secured a $30.6M offtake agreement with Frontier to remove 47,000 tonnes of CO2 by 2030.
rStream deployed its waste-sorting trailer at the University of Massachusetts Amherst.
Haffner Energy signed a contract for the development of a biomass-based hydrogen, electricity, and biochar production plant with H2 bois SA.
AeroShield Materials announced a technical milestone—the development of door-sized, transparent aerogels—and a partnership with ODL to create entry- and patio-door products.
Glimpse raised a $10M Series A for its battery-quality-monitoring platform.
Helix Earth was the 2025 SXSW Pitch winner of the Smart Cities, Transportation, and Sustainability category.

Startup Spotlights

it’s electric taps into local buildings’ electrical supply, bringing easy-to-deploy EV chargers to the curb and revenue sharing with building owners. The startup cut the ribbon on its first curbside installation this month, part of a partnership with the City of Boston to rapidly deploy EV chargers.

NONA Technologies is electrifying water desalination with a technology that works at room temperature without high pressure—requiring just three pounds per square inch.

Solidec is tackling the 40 percent of industrial carbon emissions that come from the chemical and petrochemical industries with an electrolyzer that produces chemicals by drawing molecular “building blocks” from ambient air—eliminating the need for chemical separations all together.

SUPERGirls SHINE Foundation is dedicated to providing underprivileged girls the resources to succeed in STEM.

Mark Your Calendar for These Upcoming Events

March 27: Scaling First-of-a-Kind Cleantech with Next Rung Technology! [Greentown Boston]
Our member Next Rung Technology will dive into commercialization journeys for carbon capture and wastewater cleanup—including with Greentown alum Verdox—at today’s American Institute of Chemical Engineers meeting.

April 3: Carbon to Value Initiative Year 4 Final Showcase [New York]
Join this year’s Carbon to Value Initiative Final Showcase to see presentations from the startup cohort, learn from carbontech experts, network with executives from the program’s Carbontech Leadership Council, and more.

April 10: EnergyBar: New Member Spotlight [Greentown Boston]
Meet and hear pitches from some of Greentown Boston’s newest startup members at the April edition of our signature networking event.

April 17: MIT Climate and Energy Prize Grand Finals Networking Reception [Greentown Boston]
MIT Climate and Energy prize is hosting an event to learn about innovative climatetech technologies and solutions coming out of universities, listen to startup pitches and inspiring panel discussions, and network with entrepreneurs, VC investors, corporate professionals, researchers, and students.

April 29: Greentown Houston Fourth Anniversary Transition On Tap [Greentown Houston]
Join us as we celebrate Greentown Houston’s fourth anniversary at this special edition of our Transition On Tap networking series, featuring a speaking portion with longtime Greentown members!

April 30: Climate Tech on the Plaza [Ecosystem Event]
Our team and several of our startups are excited to join this event featuring Boston’s robust climatetech industry—featuring tech demos, networking opportunities, and more.

May 13: Manufacturing Sector Networking [Greentown Houston]
Come for an evening of networking with Greentown startups in the manufacturing sector around cutting-edge solutions for sustainable and resilient manufacturing.

Sept. 15-19: Houston Energy and Climate Startup Week [Ecosystem Event]
The Houston Energy and Climate Startup Week brings together leading energy and climate venture capital investors, industry leaders, and startups from around the world to showcase the most innovative companies and technologies that are transforming the energy industry while driving a sustainable, low-carbon energy future. Stay tuned for more details in the coming months about events throughout the week, including Greentown and Browning the Green Space’s ACCEL Showcase on Sept. 18!

Greentown is Hiring!

Membership Manager (Somerville, MA)

Thank You to Our Partners

Meet Greentown Labs’ 19 Newest Members

From The Ecosystem

Meet Greentown Labs’ 19 Newest Members