Helping climatetech startupsTransformindustry faster
Verne
Energy & Power
Verne — develops hydrogen storage systems for zero-emission heavy-duty trucks.
NW NA
Energy & Power
NW NA — is an independent operator of extremely high-power electric charging stations (IECharge®), distributed electricity storage units (JBox®), and new micro-electricity production units (Tikaz®).
SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.
eSki Watercraft
Energy & Power
Electric personal watercraft
SeebeckCell Technologies
Manufacturing & Processing
SeebeckCell Technologies — develops and manufactures liquid-based thermoelectric modules, power generators, and waste heat recovery systems.
Pre Framing Corp
Infrastructure & Construction
Celadyne
Energy & Power
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.
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.
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Amplified Industries
Infrastructure & Construction
AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues
CemCycle
Manufacturing & Processing
ZettaConn
Energy & Power
DASH Clean Energy
Energy & Power
Dash Clean Energy — has developed a hydrogen simulation tool that can be used by developers to evaluate existing and planned wind and solar projects and how to manage and produce hydrogen cost competitively with existing hydrogen production pathways.
Trillium Brewing Company
Food, Water, & Land
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
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.
Polymer-X
Manufacturing & Processing
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
Piaggio Fast Forward
Transportation & Logistics
Verne
Energy & Power
Verne — develops hydrogen storage systems for zero-emission heavy-duty trucks.
NW NA
Energy & Power
NW NA — is an independent operator of extremely high-power electric charging stations (IECharge®), distributed electricity storage units (JBox®), and new micro-electricity production units (Tikaz®).
SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.
eSki Watercraft
Energy & Power
Electric personal watercraft
SeebeckCell Technologies
Manufacturing & Processing
SeebeckCell Technologies — develops and manufactures liquid-based thermoelectric modules, power generators, and waste heat recovery systems.
Pre Framing Corp
Infrastructure & Construction
Celadyne
Energy & Power
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.
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.
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Amplified Industries
Infrastructure & Construction
AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues
CemCycle
Manufacturing & Processing
ZettaConn
Energy & Power
DASH Clean Energy
Energy & Power
Dash Clean Energy — has developed a hydrogen simulation tool that can be used by developers to evaluate existing and planned wind and solar projects and how to manage and produce hydrogen cost competitively with existing hydrogen production pathways.
Trillium Brewing Company
Food, Water, & Land
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
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.
Polymer-X
Manufacturing & Processing
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
Piaggio Fast Forward
Transportation & Logistics
Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage
KVD
Manufacturing & Processing
KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
ALGBIO
Manufacturing & Processing
ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.
LA NPDT
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale
Starfield
Food, Water, & Land
STEM Americas Foundation
Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI
SWTCH Energy Inc.
Transportation & Logistics
OpConnect
Transportation & Logistics
OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
Demia
Manufacturing & Processing
Demia is a secure, real-time data infrastructure and platform that streamlines carbon certification, enabling faster, cost-effective scaling of climate projects on our path to 1 Billion tons of annual impact. With cutting-edge technology and strong industry partnerships, Demia ensures transparency, trust, and maximized climate impact for every dollar invested.
Biko Biolabs
Manufacturing & Processing
Biko Biolabs — is developing a platform technology that will empower marginalized or under-resourced communities to solve problems at the local scale. Their first project is a plastic-to-soil technology, a technique for breaking down plastic waste into valuable compost. This allows the community to avoid landfilling, incinerating, or littering the plastic, while also supporting a circular economy and turning the waste into a valuable product.
Emerald Cities Collaborative
Infrastructure & Construction
Electra
Manufacturing & Processing
ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.
Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
Patch
Transportation & Logistics
Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage
KVD
Manufacturing & Processing
KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
ALGBIO
Manufacturing & Processing
ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.
LA NPDT
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale
Starfield
Food, Water, & Land
STEM Americas Foundation
Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI
SWTCH Energy Inc.
Transportation & Logistics
OpConnect
Transportation & Logistics
OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
Demia
Manufacturing & Processing
Demia is a secure, real-time data infrastructure and platform that streamlines carbon certification, enabling faster, cost-effective scaling of climate projects on our path to 1 Billion tons of annual impact. With cutting-edge technology and strong industry partnerships, Demia ensures transparency, trust, and maximized climate impact for every dollar invested.
Biko Biolabs
Manufacturing & Processing
Biko Biolabs — is developing a platform technology that will empower marginalized or under-resourced communities to solve problems at the local scale. Their first project is a plastic-to-soil technology, a technique for breaking down plastic waste into valuable compost. This allows the community to avoid landfilling, incinerating, or littering the plastic, while also supporting a circular economy and turning the waste into a valuable product.
Emerald Cities Collaborative
Infrastructure & Construction
Electra
Manufacturing & Processing
ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.
Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
Patch
Transportation & Logistics
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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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.
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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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