Helping climatetech startupsTransformindustry faster

De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging

Tank Utility
Energy & Power

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

Moonflower Farms
Food, Water, & Land
Moonflower Technologies uses space age technology to solve real world problems.

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
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects

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

Pirl
Transportation & Logistics

Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

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
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
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

Sunwealth
Energy & Power

Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing

Polymer-X
Manufacturing & Processing

CarbonFree
Manufacturing & Processing

Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment

Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids

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

Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging

Tank Utility
Energy & Power

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

Moonflower Farms
Food, Water, & Land
Moonflower Technologies uses space age technology to solve real world problems.

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
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects

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

Pirl
Transportation & Logistics

Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

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
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
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

Sunwealth
Energy & Power

Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing

Polymer-X
Manufacturing & Processing

CarbonFree
Manufacturing & Processing

Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment

Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids

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

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
Energy & Power

COI Energy
Energy & Power
AI and machine learning to predict and prevent energy waste

Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption

MacroCycle Technologies
Manufacturing & Processing

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
Food, Water, & Land

Enerbrain
Infrastructure & Construction

XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials

Carbon Negative Solutions
Infrastructure & Construction

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

Ranger Solar
Energy & Power

Resolute Methane
Food, Water, & Land
Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

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

FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems

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

MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

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
Energy & Power

COI Energy
Energy & Power
AI and machine learning to predict and prevent energy waste

Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption

MacroCycle Technologies
Manufacturing & Processing

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
Food, Water, & Land

Enerbrain
Infrastructure & Construction

XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials

Carbon Negative Solutions
Infrastructure & Construction

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

Ranger Solar
Energy & Power

Resolute Methane
Food, Water, & Land
Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

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

FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems

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




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.
Our Startups Have Raised Over $0B
All-time
0
Currently home to
0
0+
Countries Where
Startups Operate
0
New Jobs Created by Our Members, and Counting
Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.
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.


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.

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.

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






















