Helping climatetech startupsTransformindustry faster
Arista Solutions
Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Promethean Power Systems
Food, Water, & Land
Promethean Power Systems — has developed and deployed its patented Thermal Battery technology that is being used by over 65,000 farmers in India and Bangladesh to chill their harvested perishable food and milk and get it to the market safely without the need for diesel generators. In addition to village-level cold-storage, Promethean now operates diesel-free reefer trucks using its thermal battery technology that deliver refrigerated food without the need for compressors on its trucks.
Resolute Methane
Food, Water, & Land
Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design
Sankofa Dynamics
Food, Water, & Land
Felixfusion
RepAir Carbon
Manufacturing & Processing
RepAir - the most efficient, scalable and affordable carbon capture solution, designed for the gigaton scale
SpadXTech
Food, Water, & Land
SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.
FLITE Material Sciences
Manufacturing & Processing
Ranger Solar
Energy & Power
Tank Utility
Energy & Power
Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Enerbrain
Infrastructure & Construction
Sensible
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
Enviro Power Technologies
Energy & Power
Enviro Power Technologies — is replacing aging heating equipment with their breakthrough SmartWatt heat & power technology providing energy solutions servicing millions of homes, businesses and their power utilities in lowering ever increasing utility bills and increasing resiliency and reliability.
ICODOS
Manufacturing & Processing
Scalable clean methanol to decarbonize transport and chemicals
Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.
Tycho Solutions
Energy & Power
Arista Solutions
Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Promethean Power Systems
Food, Water, & Land
Promethean Power Systems — has developed and deployed its patented Thermal Battery technology that is being used by over 65,000 farmers in India and Bangladesh to chill their harvested perishable food and milk and get it to the market safely without the need for diesel generators. In addition to village-level cold-storage, Promethean now operates diesel-free reefer trucks using its thermal battery technology that deliver refrigerated food without the need for compressors on its trucks.
Resolute Methane
Food, Water, & Land
Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design
Sankofa Dynamics
Food, Water, & Land
Felixfusion
RepAir Carbon
Manufacturing & Processing
RepAir - the most efficient, scalable and affordable carbon capture solution, designed for the gigaton scale
SpadXTech
Food, Water, & Land
SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.
FLITE Material Sciences
Manufacturing & Processing
Ranger Solar
Energy & Power
Tank Utility
Energy & Power
Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Enerbrain
Infrastructure & Construction
Sensible
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
Enviro Power Technologies
Energy & Power
Enviro Power Technologies — is replacing aging heating equipment with their breakthrough SmartWatt heat & power technology providing energy solutions servicing millions of homes, businesses and their power utilities in lowering ever increasing utility bills and increasing resiliency and reliability.
ICODOS
Manufacturing & Processing
Scalable clean methanol to decarbonize transport and chemicals
Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.
Tycho Solutions
Energy & Power
ALLY Energy
Infrastructure & Construction
ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.
ConnectDER
Energy & Power
ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
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.
Ardent Process Technologies
Energy & Power
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
TORO Water Air Thermal Technologies Corp.
Energy & Power
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
H2Pro
Energy & Power
H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.
CarbonQuest
Infrastructure & Construction
Skyre
Manufacturing & Processing
Solar Mantle
Infrastructure & Construction
Film that reflects sunlight for energy-free passive cooling of structures
Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
ATOM-X
Energy & Power
Transforming CO₂ into sustainable fuels like green methanol
WattGlass
Energy & Power
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Aquosmic Corporation
Energy & Power
Aquosmic — analyzes any body of water using satellite images and can determine biomass as well.
Spare-it
Manufacturing & Processing
Spare-it — is a catalyst for sustainability in the workplace.
Optigon
Energy & Power
Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication
ALLY Energy
Infrastructure & Construction
ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.
ConnectDER
Energy & Power
ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
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.
Ardent Process Technologies
Energy & Power
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
TORO Water Air Thermal Technologies Corp.
Energy & Power
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
H2Pro
Energy & Power
H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.
CarbonQuest
Infrastructure & Construction
Skyre
Manufacturing & Processing
Solar Mantle
Infrastructure & Construction
Film that reflects sunlight for energy-free passive cooling of structures
Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
ATOM-X
Energy & Power
Transforming CO₂ into sustainable fuels like green methanol
WattGlass
Energy & Power
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Aquosmic Corporation
Energy & Power
Aquosmic — analyzes any body of water using satellite images and can determine biomass as well.
Spare-it
Manufacturing & Processing
Spare-it — is a catalyst for sustainability in the workplace.
Optigon
Energy & Power
Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication
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.