Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
De-Ice logo

De-Ice

Transportation & Logistics

Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Revterra logo

Revterra

Energy & Power

Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging

Tank Utility logo

Tank Utility

Energy & Power

Skylark Wireless logo

Skylark Wireless

Manufacturing & Processing

Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

Moonflower Farms logo

Moonflower Farms

Food, Water, & Land

Moonflower Technologies uses space age technology to solve real world problems.

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

Wise Energie logo

Wise Energie

Energy & Power

Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power

Pirl logo

Pirl

Transportation & Logistics

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

Sunwealth logo

Sunwealth

Energy & Power

Kanin Energy logo

Kanin Energy

Energy & Power

Monetizing industrial waste heat with reduced deployment risk via third-party financing

Polymer-X logo

Polymer-X

Manufacturing & Processing

CarbonFree logo

CarbonFree

Manufacturing & Processing

Aeromine Technologies, Inc. logo

Aeromine Technologies, Inc.

Energy & Power

Bladeless, motionless wind turbines for the built environment

Respire Energy logo

Respire Energy

Energy & Power

Safe, low-cost, and long-duration metal-air battery designed for microgrids

Solarflux logo

Solarflux

Energy & Power

SolarFlux — makes the FOCUS, a parabolic dish concentrator capable of delivering flexible, clean, inexpensive solar thermal power for a wide range of applications.

De-Ice logo

De-Ice

Transportation & Logistics

Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Revterra logo

Revterra

Energy & Power

Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging

Tank Utility logo

Tank Utility

Energy & Power

Skylark Wireless logo

Skylark Wireless

Manufacturing & Processing

Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

Moonflower Farms logo

Moonflower Farms

Food, Water, & Land

Moonflower Technologies uses space age technology to solve real world problems.

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

Wise Energie logo

Wise Energie

Energy & Power

Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power

Pirl logo

Pirl

Transportation & Logistics

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

Sunwealth logo

Sunwealth

Energy & Power

Kanin Energy logo

Kanin Energy

Energy & Power

Monetizing industrial waste heat with reduced deployment risk via third-party financing

Polymer-X logo

Polymer-X

Manufacturing & Processing

CarbonFree logo

CarbonFree

Manufacturing & Processing

Aeromine Technologies, Inc. logo

Aeromine Technologies, Inc.

Energy & Power

Bladeless, motionless wind turbines for the built environment

Respire Energy logo

Respire Energy

Energy & Power

Safe, low-cost, and long-duration metal-air battery designed for microgrids

Solarflux logo

Solarflux

Energy & Power

SolarFlux — makes the FOCUS, a parabolic dish concentrator capable of delivering flexible, clean, inexpensive solar thermal power for a wide range of applications.

MCatalysis logo

MCatalysis

Manufacturing & Processing

Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

SeaDeep logo

SeaDeep

Transportation & Logistics

SeaDeep — revolutionizes underwater assessments with AI-powered subsea vision for inspecting marine environments and substructures in real-time and with high-fidelity using low-cost, off-the-shelf cameras.

Type One Energy logo

Type One Energy

Energy & Power

COI Energy logo

COI Energy

Energy & Power

AI and machine learning to predict and prevent energy waste

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

Syzygy Plasmonics logo

Syzygy Plasmonics

Manufacturing & Processing

Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

Beantrust logo

Beantrust

Food, Water, & Land

Enerbrain logo

Enerbrain

Infrastructure & Construction

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Mantel logo

Mantel

Manufacturing & Processing

Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Ranger Solar logo

Ranger Solar

Energy & Power

Resolute Methane logo

Resolute Methane

Food, Water, & Land

Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

Stepwise logo

Stepwise

Energy & Power

Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.

Immedia Power logo

Immedia Power

Energy & Power

Immedia Power gives space-constrained sites the on-site power they need to run and scale without waiting on the grid.

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

SolarFi logo

SolarFi

Energy & Power

Privé is a unique and blissful experience for social-distanced gathering in a transparent house that combines the arts, renewable energy, and sustainability.

Verde Technologies logo

Verde Technologies

Energy & Power

Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption

MCatalysis logo

MCatalysis

Manufacturing & Processing

Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

SeaDeep logo

SeaDeep

Transportation & Logistics

SeaDeep — revolutionizes underwater assessments with AI-powered subsea vision for inspecting marine environments and substructures in real-time and with high-fidelity using low-cost, off-the-shelf cameras.

Type One Energy logo

Type One Energy

Energy & Power

COI Energy logo

COI Energy

Energy & Power

AI and machine learning to predict and prevent energy waste

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

Syzygy Plasmonics logo

Syzygy Plasmonics

Manufacturing & Processing

Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

Beantrust logo

Beantrust

Food, Water, & Land

Enerbrain logo

Enerbrain

Infrastructure & Construction

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Mantel logo

Mantel

Manufacturing & Processing

Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Ranger Solar logo

Ranger Solar

Energy & Power

Resolute Methane logo

Resolute Methane

Food, Water, & Land

Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

Stepwise logo

Stepwise

Energy & Power

Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.

Immedia Power logo

Immedia Power

Energy & Power

Immedia Power gives space-constrained sites the on-site power they need to run and scale without waiting on the grid.

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

SolarFi logo

SolarFi

Energy & Power

Privé is a unique and blissful experience for social-distanced gathering in a transparent house that combines the arts, renewable energy, and sustainability.

Verde Technologies logo

Verde Technologies

Energy & Power

Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption

Greentown member working in a wet lab
Greentown community members collaborating
Greentown member pipetting in a lab
Greentown members at work in the incubator
[ 03 ]Who We Are

Greentown is a 501(c)(3) nonprofit helping climate entrepreneurs build faster.

The way the world makes energy, materials, and food is changing — and the next decade will decide whether that change makes life better: more energy with fewer emissions, more industry with cleaner air, more good jobs.

That future comes from entrepreneurs — the heroes who turn ideas into real products, real companies, and the jobs of the future. And the ones who make it are the ones with a community behind them.

For 15 years, Greentown has been that community — leaning in with the space, the people, the funding, and the first customers they need. Get behind the entrepreneurs building our future.

[ 04 ]By The Numbers

Our Impact

Our members aren't just building better ways to operate; they're slashing emissions, boosting efficiency, and transforming how we use resources across the world. Now 15 years and counting, the impact speaks for itself.
Capital Mobilized

Our Startups Have Raised Over $0B

2011Now
Startups Supported

All-time

0

Currently home to

0

Global Footprint

0+

Countries Where
Startups Operate

Jobs Created

0

New Jobs Created by Our Members, and Counting

[ 05 ]Our Partners

Where Industry Meets Innovation

Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.

  • Amazon
  • Amrize
  • Aramco
  • BCG
  • Chevron
  • Dassault Systemes
  • Emerson
  • Enel
  • Equinor
  • Foley Hoag
  • Fortescue
  • GeSI
  • GE Vernova
  • OnTerris (fka Montrose)
  • Saint-Gobain
  • Shell
  • TotalEnergies
  • Vinson & Elkins
  • Woodside Energy
For Startups

Apply for Membership

Ready to take your technology to the next level? Join the world's largest community of climatetech and energy entrepreneurs and fast-track your speed to market.

Greentown member prototyping hardware in the lab
For Partners
Greentown partners networking at an event

Become a Partner

Access the most concentrated pipeline of vetted climatetech companies in North America. Partner on pilots, invest, or join as a corporate sponsor.

Explore Partnership
Events
Speaker presenting on stage at a Greentown event

Get Involved

We pride ourselves on being a convener of the climatetech ecosystem. Join us at an upcoming event to explore all things climate action and collaboration.

View Calendar
For Investors
Founders and investors connecting at a Greentown incubator

Explore Investing

Tap into deal flow with the world’s largest community of climate and energy startups.

Explore Investing