Helping climatetech startupsTransformindustry faster

Wiggins Manufacturing & Logistics Consulting
Manufacturing & Processing
Help US manufacturers and supply chain companies design new facilities and Lean out existing ones.

SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency

Sofar Ocean
Food, Water, & Land

EcoForge
Food, Water, & Land
-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Osmoses
Manufacturing & Processing
Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

Lobster Robotics
Food, Water, & Land
Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.

Seabound
Transportation & Logistics

AmpUp
Transportation & Logistics

SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation

Biosfera
Manufacturing & Processing

Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting

Transaera
Infrastructure & Construction
Ultra-efficient air conditioning using a novel desiccant material

Flight Guard AI
Transportation & Logistics
Pilot-wearable safety systems using human-centered AI to enhance pilot awareness

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

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

WindRays Energy LLC
Energy & Power
WindRays Energy LLC — develops new models of wind energy designs to make widespread implementation in densely populated areas more efficient and profitable.

Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

CrowdComfort
Infrastructure & Construction

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale

Wiggins Manufacturing & Logistics Consulting
Manufacturing & Processing
Help US manufacturers and supply chain companies design new facilities and Lean out existing ones.

SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency

Sofar Ocean
Food, Water, & Land

EcoForge
Food, Water, & Land
-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Osmoses
Manufacturing & Processing
Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

Lobster Robotics
Food, Water, & Land
Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.

Seabound
Transportation & Logistics

AmpUp
Transportation & Logistics

SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation

Biosfera
Manufacturing & Processing

Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting

Transaera
Infrastructure & Construction
Ultra-efficient air conditioning using a novel desiccant material

Flight Guard AI
Transportation & Logistics
Pilot-wearable safety systems using human-centered AI to enhance pilot awareness

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

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

WindRays Energy LLC
Energy & Power
WindRays Energy LLC — develops new models of wind energy designs to make widespread implementation in densely populated areas more efficient and profitable.

Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

CrowdComfort
Infrastructure & Construction

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale

Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.

Deep Anchor Solutions
Infrastructure & Construction
Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

Orien Energy
Infrastructure & Construction
Sorption heat pump to recover waste heat from dryer exhaust

Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Moment Energy
Energy & Power

Dexai Robotics
Food, Water, & Land

LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits

Advent Technologies
Energy & Power
Advent Technologies — makes ht-pem fuel cells that convert hydrogen and other renewable fuels to electricity. This platform technology that addresses needs in numerous markets, including passenger, commercial vehicle, and lightweight aviation (eVTOL).

Top Grain Technologies
Energy & Power
Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

Haystack Ag
Food, Water, & Land
High-accuracy carbon-measurement systems for soil to drive affordable regenerative farming practices

InnoSepra
Energy & Power

Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains

Renu Energy
Manufacturing & Processing
Converting waste and converting it into fuels and energy helping to create a more responsible environment

WattGlass
Energy & Power

Tank Utility
Energy & Power

Carbonbase

Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

A&I Power Group
Energy & Power
Electricity-generation systems that convert electromagnetic energy into electrical potential

Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale

Planckton Data
Manufacturing & Processing
Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems

Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.

Deep Anchor Solutions
Infrastructure & Construction
Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

Orien Energy
Infrastructure & Construction
Sorption heat pump to recover waste heat from dryer exhaust

Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Moment Energy
Energy & Power

Dexai Robotics
Food, Water, & Land

LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits

Advent Technologies
Energy & Power
Advent Technologies — makes ht-pem fuel cells that convert hydrogen and other renewable fuels to electricity. This platform technology that addresses needs in numerous markets, including passenger, commercial vehicle, and lightweight aviation (eVTOL).

Top Grain Technologies
Energy & Power
Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

Haystack Ag
Food, Water, & Land
High-accuracy carbon-measurement systems for soil to drive affordable regenerative farming practices

InnoSepra
Energy & Power

Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains

Renu Energy
Manufacturing & Processing
Converting waste and converting it into fuels and energy helping to create a more responsible environment

WattGlass
Energy & Power

Tank Utility
Energy & Power

Carbonbase

Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

A&I Power Group
Energy & Power
Electricity-generation systems that convert electromagnetic energy into electrical potential

Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale

Planckton Data
Manufacturing & Processing
Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems




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
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Currently home to
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Countries Where
Startups Operate
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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.

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






















