Helping climatetech startupsTransformindustry faster

Opus One Solutions
Energy & Power

KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Pirl
Transportation & Logistics

KUBO Greenhouse Projects
Food, Water, & Land

pH Matter
Energy & Power

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Eos Loan
Energy & Power

Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

Energy Dome
Energy & Power
EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

SeaSatellites
Transportation & Logistics

Texas Geothermal Energy Alliance
Energy & Power

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.

InventWood
Infrastructure & Construction
InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

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.

Parasanti
Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

REI
Energy & Power

InfiSense

Opus One Solutions
Energy & Power

KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Pirl
Transportation & Logistics

KUBO Greenhouse Projects
Food, Water, & Land

pH Matter
Energy & Power

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Eos Loan
Energy & Power

Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

Energy Dome
Energy & Power
EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

SeaSatellites
Transportation & Logistics

Texas Geothermal Energy Alliance
Energy & Power

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.

InventWood
Infrastructure & Construction
InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

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.

Parasanti
Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

REI
Energy & Power

InfiSense

Elios
Energy & Power

Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry

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.

Tank Utility
Energy & Power

Lumafield
Manufacturing & Processing
Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

DirtSat
Food, Water, & Land
DirtSat — looks at ways space resources can have profound impacts on some of our planet’s biggest challenges and is reframing urban food production pathways and climate resilience for Smart City adoption.

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.

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.

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

Sofar Ocean
Food, Water, & Land

Caravel Bio
Manufacturing & Processing

OffGridBox
Food, Water, & Land

Carbon Negative Solutions
Infrastructure & Construction

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

sweetgreen
Food, Water, & Land

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.

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

BERKM
Manufacturing & Processing

Blue Atlas Robotics
Manufacturing & Processing

Elios
Energy & Power

Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry

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.

Tank Utility
Energy & Power

Lumafield
Manufacturing & Processing
Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

DirtSat
Food, Water, & Land
DirtSat — looks at ways space resources can have profound impacts on some of our planet’s biggest challenges and is reframing urban food production pathways and climate resilience for Smart City adoption.

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.

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.

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

Sofar Ocean
Food, Water, & Land

Caravel Bio
Manufacturing & Processing

OffGridBox
Food, Water, & Land

Carbon Negative Solutions
Infrastructure & Construction

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

sweetgreen
Food, Water, & Land

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.

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

BERKM
Manufacturing & Processing

Blue Atlas Robotics
Manufacturing & Processing




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.
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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
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