Helping climatetech startupsTransformindustry faster
Altaeros
Energy & Power
CZAR Power
Energy & Power
Lite-1
Manufacturing & Processing
Clean, scalable, microbe-made colour to replace toxic dyes
Energy Web Foundation
Energy & Power
FluxWorks
Manufacturing & Processing
CF Tech
Energy & Power
CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.
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.
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.
Terrapin Geothermics
Energy & Power
Terrapin Geothermics — develops energy projects that reduce the emissions intensity of the industrial sectors.
Accion Systems
Transportation & Logistics
Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.
Acelerex
Energy & Power
Acelerex — is a pioneer in providing SaaS-based solutions to the challenges of integrating renewables, energy storage and electric vehicles into the 21st century power grid.
Trillium Brewing Company
Food, Water, & Land
VesprSolar
Energy & Power
VesprSolar — is transforming how solar panels are installed. VesprSolar V-Clamp™ is a low-cost fastener that makes solar arrays more secure and faster to install.
Massachusetts Climatetech Studio
Energy & Power
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
WattGlass
Energy & Power
Public Grid
Energy & Power
Made of Air
Manufacturing & Processing
Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.
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.
Altaeros
Energy & Power
CZAR Power
Energy & Power
Lite-1
Manufacturing & Processing
Clean, scalable, microbe-made colour to replace toxic dyes
Energy Web Foundation
Energy & Power
FluxWorks
Manufacturing & Processing
CF Tech
Energy & Power
CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.
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.
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.
Terrapin Geothermics
Energy & Power
Terrapin Geothermics — develops energy projects that reduce the emissions intensity of the industrial sectors.
Accion Systems
Transportation & Logistics
Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.
Acelerex
Energy & Power
Acelerex — is a pioneer in providing SaaS-based solutions to the challenges of integrating renewables, energy storage and electric vehicles into the 21st century power grid.
Trillium Brewing Company
Food, Water, & Land
VesprSolar
Energy & Power
VesprSolar — is transforming how solar panels are installed. VesprSolar V-Clamp™ is a low-cost fastener that makes solar arrays more secure and faster to install.
Massachusetts Climatetech Studio
Energy & Power
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
WattGlass
Energy & Power
Public Grid
Energy & Power
Made of Air
Manufacturing & Processing
Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.
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.
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
eologix sensor technology
Energy & Power
Hicor Technologies Inc.
Energy & Power
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.
Stash Energy
Energy & Power
Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.
Sense Labs, Inc.
Infrastructure & Construction
The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.
Hyperframe
Infrastructure & Construction
GeoFuels
Energy & Power
We are positioned to solve the problem of clean hydrogen not competing economically against alternatives. Through geothermal power and methane pyrolysis we believe we have the solution.
Raise Green
Energy & Power
Raise Green — helps make it easy to start your own solar energy project or climate action company. Anyone can start a project on Raise Green and bring clean energy to their business or community.
Green Path Strategies
Energy & Power
Aeon Blue Technologies
Manufacturing & Processing
By matching chemical plant production with green variable power, ABT offers a solution that can boost profit margins by reducing electricity costs, making plants safer for employees and surrounding communities, and solving one of the most pressing challenges faced by the industrial sector: manufacturing without carbon. Aeon Blue aims for swift deployment of its advanced intermittency technology through licensing and EPC support with a fee and royalties model.
AmpUp
Transportation & Logistics
ZS2 Technologies
Manufacturing & Processing
ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.
Feon Energy, Inc. (eLyte Technology)
Energy & Power
eLyte — is commercializing next-gen battery technology for electric vehicles and other applications.
Cyvl
Infrastructure & Construction
Cyvl.ai (formerly Roadgnar) — helps cities and businesses better manage their physical infrastructure assets like roads, bridges, sidewalks, buildings, and more with distributed data collection devices and machine learning.
Regenerative Resources
Food, Water, & Land
Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.
pH Matter
Energy & Power
Understory
Infrastructure & Construction
Weather hardware and analytics
Applied Bioplastics
Food, Water, & Land
Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues
Transocean
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
eologix sensor technology
Energy & Power
Hicor Technologies Inc.
Energy & Power
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.
Stash Energy
Energy & Power
Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.
Sense Labs, Inc.
Infrastructure & Construction
The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.
Hyperframe
Infrastructure & Construction
GeoFuels
Energy & Power
We are positioned to solve the problem of clean hydrogen not competing economically against alternatives. Through geothermal power and methane pyrolysis we believe we have the solution.
Raise Green
Energy & Power
Raise Green — helps make it easy to start your own solar energy project or climate action company. Anyone can start a project on Raise Green and bring clean energy to their business or community.
Green Path Strategies
Energy & Power
Aeon Blue Technologies
Manufacturing & Processing
By matching chemical plant production with green variable power, ABT offers a solution that can boost profit margins by reducing electricity costs, making plants safer for employees and surrounding communities, and solving one of the most pressing challenges faced by the industrial sector: manufacturing without carbon. Aeon Blue aims for swift deployment of its advanced intermittency technology through licensing and EPC support with a fee and royalties model.
AmpUp
Transportation & Logistics
ZS2 Technologies
Manufacturing & Processing
ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.
Feon Energy, Inc. (eLyte Technology)
Energy & Power
eLyte — is commercializing next-gen battery technology for electric vehicles and other applications.
Cyvl
Infrastructure & Construction
Cyvl.ai (formerly Roadgnar) — helps cities and businesses better manage their physical infrastructure assets like roads, bridges, sidewalks, buildings, and more with distributed data collection devices and machine learning.
Regenerative Resources
Food, Water, & Land
Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.
pH Matter
Energy & Power
Understory
Infrastructure & Construction
Weather hardware and analytics
Applied Bioplastics
Food, Water, & Land
Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues
Transocean
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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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.