Helping climatetech startupsTransformindustry faster
SEAROVER UNDERWATER ROBOTICS
Manufacturing & Processing
Enersion
Energy & Power
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
BERKM
Manufacturing & Processing
Salient Energy
Energy & Power
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
LiftOFF Technology
Energy & Power
Batteries with breakthrough energy density and safety
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).
REI
Energy & Power
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
Starfield
Food, Water, & Land
Metalmark Innovations
Transportation & Logistics
Excipio Energy
Energy & Power
Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.
SICDrone
Transportation & Logistics
CalWave Power Technologies
Energy & Power
CalWave — CalWave’s mission is to unlock the vast and steady carbon-free power from ocean waves, bringing superior power-generating technology to market with a global reach. CalWave’s proprietary wave energy converter technology achieves high performance while surviving storms and extreme conditions.
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
MITO Material Solutions
Manufacturing & Processing
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
SEAROVER UNDERWATER ROBOTICS
Manufacturing & Processing
Enersion
Energy & Power
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
BERKM
Manufacturing & Processing
Salient Energy
Energy & Power
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
LiftOFF Technology
Energy & Power
Batteries with breakthrough energy density and safety
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).
REI
Energy & Power
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
Starfield
Food, Water, & Land
Metalmark Innovations
Transportation & Logistics
Excipio Energy
Energy & Power
Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.
SICDrone
Transportation & Logistics
CalWave Power Technologies
Energy & Power
CalWave — CalWave’s mission is to unlock the vast and steady carbon-free power from ocean waves, bringing superior power-generating technology to market with a global reach. CalWave’s proprietary wave energy converter technology achieves high performance while surviving storms and extreme conditions.
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
MITO Material Solutions
Manufacturing & Processing
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
Geckskin
Manufacturing & Processing
MissionPoint Capital Partners
Energy Toolbase
Energy & Power
Energy Toolbase — is an industry leading software platform that provides a cohesive suite of project modeling, energy storage control and asset monitoring products that enable solar and energy storage developers to deploy projects more efficiently.
SmartAC.com
Infrastructure & Construction
SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.
Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.
QuEra Computing
Nebumi
Energy & Power
Emissions intelligence platform, monitoring pollution with satellite data and AI
Via Separations
Manufacturing & Processing
Via Separations — is developing a new membrane material to make manufacturing processes more energy efficient—transforming the production of things like fertilizer and nylon, and with the potential to save a gigaton of carbon each year.
Aja Labs
Manufacturing & Processing
Veloce Energy
Energy & Power
Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.
SEEDiA
Energy & Power
SEEDiA — is making cities sustainable by reducing CO2 emissions and keeping citizen connected and charged up.
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
Ohmium International
Energy & Power
R3 Energy
Energy & Power
Hibot
Infrastructure & Construction
Solutions for infrastructures across industries.
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
RailPod
Transportation & Logistics
GeoTeknica
Manufacturing & Processing
Hertha Metals Inc.
Energy & Power
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
Geckskin
Manufacturing & Processing
MissionPoint Capital Partners
Energy Toolbase
Energy & Power
Energy Toolbase — is an industry leading software platform that provides a cohesive suite of project modeling, energy storage control and asset monitoring products that enable solar and energy storage developers to deploy projects more efficiently.
SmartAC.com
Infrastructure & Construction
SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.
Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.
QuEra Computing
Nebumi
Energy & Power
Emissions intelligence platform, monitoring pollution with satellite data and AI
Via Separations
Manufacturing & Processing
Via Separations — is developing a new membrane material to make manufacturing processes more energy efficient—transforming the production of things like fertilizer and nylon, and with the potential to save a gigaton of carbon each year.
Aja Labs
Manufacturing & Processing
Veloce Energy
Energy & Power
Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.
SEEDiA
Energy & Power
SEEDiA — is making cities sustainable by reducing CO2 emissions and keeping citizen connected and charged up.
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
Ohmium International
Energy & Power
R3 Energy
Energy & Power
Hibot
Infrastructure & Construction
Solutions for infrastructures across industries.
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
RailPod
Transportation & Logistics
GeoTeknica
Manufacturing & Processing
Hertha Metals Inc.
Energy & Power
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
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
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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.
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Tap into deal flow with the world’s largest community of climate and energy startups.