Helping climate & energy startupsTransformindustries faster

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.

Fervo Energy
Energy & Power
Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Lasso Labs
Food, Water, & Land
Plant-based meat technology engineered to replicate animal meat texture and nutritional profile

FAST Metals
Manufacturing & Processing
Platform extracting iron, aluminum, scandium, titanium, and rare earth elements from industrial waste

AIRCO
Energy & Power
Platform to produce fully formulated synthetic fuels from captured CO₂ and hydrogen

Dandelion Energy
Infrastructure & Construction
Geothermal heat pump systems for residential heating and cooling

CGIS
Energy & Power
Clean-energy insurance services and risk-management solutions across the renewable energy industry

KUBO Greenhouse Projects
Food, Water, & Land
Making sustainable growing accessible with CO₂-negative, smart energy solutions

IncentiFind
Infrastructure & Construction
Searchable database of U.S. green building incentives by property address

Transport Phenomena Technologies
Manufacturing & Processing
Transport Phenomena Technologies — models software for thermal management of electronics.

XMtrace
Manufacturing & Processing
Low-cost methane monitoring system enabling real-time detection and autonomous response

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.

Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

EQORE
Energy & Power
AI-operated battery systems that help large facilities reduce electricity costs and manage grid demand

Thola
Energy & Power
AI-based energy forecasting and load management for industrial facilities and grid coordination

Haystack Ag
Food, Water, & Land
Soil organic carbon measurement system reducing testing costs while maintaining accuracy for carbon credit verification

Prime Lightworks
Energy & Power
Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

SkyH2O
Food, Water, & Land
Atmospheric water generation stations that produce fresh potable water from air for commercial and industrial use

Voltaware
Energy & Power
Voltaware is an AI-powered energy intelligence company that helps utilities, energy innovators, and service providers unlock the full potential of energy data to drive energy efficiency and decarbonization.

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.

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.

Fervo Energy
Energy & Power
Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Lasso Labs
Food, Water, & Land
Plant-based meat technology engineered to replicate animal meat texture and nutritional profile

FAST Metals
Manufacturing & Processing
Platform extracting iron, aluminum, scandium, titanium, and rare earth elements from industrial waste

AIRCO
Energy & Power
Platform to produce fully formulated synthetic fuels from captured CO₂ and hydrogen

Dandelion Energy
Infrastructure & Construction
Geothermal heat pump systems for residential heating and cooling

CGIS
Energy & Power
Clean-energy insurance services and risk-management solutions across the renewable energy industry

KUBO Greenhouse Projects
Food, Water, & Land
Making sustainable growing accessible with CO₂-negative, smart energy solutions

IncentiFind
Infrastructure & Construction
Searchable database of U.S. green building incentives by property address

Transport Phenomena Technologies
Manufacturing & Processing
Transport Phenomena Technologies — models software for thermal management of electronics.

XMtrace
Manufacturing & Processing
Low-cost methane monitoring system enabling real-time detection and autonomous response

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.

Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

EQORE
Energy & Power
AI-operated battery systems that help large facilities reduce electricity costs and manage grid demand

Thola
Energy & Power
AI-based energy forecasting and load management for industrial facilities and grid coordination

Haystack Ag
Food, Water, & Land
Soil organic carbon measurement system reducing testing costs while maintaining accuracy for carbon credit verification

Prime Lightworks
Energy & Power
Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

SkyH2O
Food, Water, & Land
Atmospheric water generation stations that produce fresh potable water from air for commercial and industrial use

Voltaware
Energy & Power
Voltaware is an AI-powered energy intelligence company that helps utilities, energy innovators, and service providers unlock the full potential of energy data to drive energy efficiency and decarbonization.

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.

Root AI
Food, Water, & Land
Intelligent robots to help growers manage efficient indoor farms

Solar Mantle
Infrastructure & Construction
Passive thermal film that reflects solar radiation and emits heat to reduce HVAC loads and energy consumption

Energy Intelligence
Energy & Power
Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

Skytree
Food, Water, & Land
Skytree — harnesses carbon through the power of decentralized direct air capture technology. They create one of the world’s smallest and simplest circular carbon solution to transform how food is grown to provide cleaner water.

Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties

Atlas Robotics
Transportation & Logistics
Physical AI autonomy platform for warehouse pallet movement and logistics automation

Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

RenewCO₂
Manufacturing & Processing
Electrochemical process to convert CO₂ into fuels and chemicals, such as SAF and propylene glycol

Celadyne
Energy & Power
Hydrogen for defense, industry, and heavy-duty transport

AmHyTech
Energy & Power
Electrolyzer converting ammonia to hydrogen at room temperature and ambient pressure for decentralized fuel generation

CF Tech
Energy & Power
CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.

Pirl
Transportation & Logistics
Next-generation electric vehicle charging infrastructure

Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities

L3 Open Water Power
Energy & Power
Aluminum-water platform technology for underseas power generation

Revora Materials
Energy & Power
Capturing CO2 and combining it with alkaline residues to produce solid carbonates for heavy industry

7Analytics
Infrastructure & Construction
7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

Massachusetts Climatetech Studio
Energy & Power
Matching teams of entrepreneurs with cutting-edge university and federal lab technologies

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

ALP Technologies
Energy & Power
Engineering and commercial-scale energy project company focused on developing renewable energy for lower-income regions

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.

Root AI
Food, Water, & Land
Intelligent robots to help growers manage efficient indoor farms

Solar Mantle
Infrastructure & Construction
Passive thermal film that reflects solar radiation and emits heat to reduce HVAC loads and energy consumption

Energy Intelligence
Energy & Power
Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

Skytree
Food, Water, & Land
Skytree — harnesses carbon through the power of decentralized direct air capture technology. They create one of the world’s smallest and simplest circular carbon solution to transform how food is grown to provide cleaner water.

Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties

Atlas Robotics
Transportation & Logistics
Physical AI autonomy platform for warehouse pallet movement and logistics automation

Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

RenewCO₂
Manufacturing & Processing
Electrochemical process to convert CO₂ into fuels and chemicals, such as SAF and propylene glycol

Celadyne
Energy & Power
Hydrogen for defense, industry, and heavy-duty transport

AmHyTech
Energy & Power
Electrolyzer converting ammonia to hydrogen at room temperature and ambient pressure for decentralized fuel generation

CF Tech
Energy & Power
CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.

Pirl
Transportation & Logistics
Next-generation electric vehicle charging infrastructure

Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities

L3 Open Water Power
Energy & Power
Aluminum-water platform technology for underseas power generation

Revora Materials
Energy & Power
Capturing CO2 and combining it with alkaline residues to produce solid carbonates for heavy industry

7Analytics
Infrastructure & Construction
7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

Massachusetts Climatetech Studio
Energy & Power
Matching teams of entrepreneurs with cutting-edge university and federal lab technologies

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

ALP Technologies
Energy & Power
Engineering and commercial-scale energy project company focused on developing renewable energy for lower-income regions

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.




The way the world makes energy, materials, and food is being reinvented right now. What happens over the next decade will decide how much better it gets: more energy with fewer emissions, more industry with cleaner air, and more resiliency for communities everywhere.
That future is being built by entrepreneurs, the heroes who turn ideas into real products, real companies, and jobs of the future.
And we know they go further & faster when they're not doing it alone.
For 15 years, Greentown Labs has a home for founders, leaning in with the space, the people, the connections, and the first customers they need.
With Greentown, 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 help innovation move faster, from lab to market.
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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