Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Enerbrain logo

Enerbrain

Infrastructure & Construction

MITO Material Solutions logo

MITO Material Solutions

Manufacturing & Processing

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Eugenie logo

Eugenie

Manufacturing & Processing

Eugenie — has developed an AI-based predictive maintenance platform that reduces 3% of the total HC production losses suffered by upstream oil and gas operations, thus helping to reduce billions of metric tons of GHG emissions annually.

Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

A collaboration hub for hardware teams with revision control, design reviews, and releases

Hicor Technologies Inc. logo

Hicor Technologies Inc.

Energy & Power

AIRCO logo

AIRCO

Energy & Power

SolarFi logo

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.

CarbonFree logo

CarbonFree

Manufacturing & Processing

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Climate Core Capital logo

Climate Core Capital

Infrastructure & Construction

Climate Core — runs a climate-oriented real estate strategy, namely acquiring buildings in low climate risk locations and making those buildings the most resilient in the built environment.

Ebb Carbon logo

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.

Endeavor Composites logo

Endeavor Composites

Manufacturing & Processing

Sustainably repurposing landfill-destined post-industrial fibers into semi-finished goods for the composite industry

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Arbon logo

Arbon

Energy & Power

Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization

NW NA logo

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®).

Transaera logo

Transaera

Infrastructure & Construction

Ultra-efficient air conditioning using a novel desiccant material

Enerbrain logo

Enerbrain

Infrastructure & Construction

MITO Material Solutions logo

MITO Material Solutions

Manufacturing & Processing

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Eugenie logo

Eugenie

Manufacturing & Processing

Eugenie — has developed an AI-based predictive maintenance platform that reduces 3% of the total HC production losses suffered by upstream oil and gas operations, thus helping to reduce billions of metric tons of GHG emissions annually.

Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

A collaboration hub for hardware teams with revision control, design reviews, and releases

Hicor Technologies Inc. logo

Hicor Technologies Inc.

Energy & Power

AIRCO logo

AIRCO

Energy & Power

SolarFi logo

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.

CarbonFree logo

CarbonFree

Manufacturing & Processing

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Climate Core Capital logo

Climate Core Capital

Infrastructure & Construction

Climate Core — runs a climate-oriented real estate strategy, namely acquiring buildings in low climate risk locations and making those buildings the most resilient in the built environment.

Ebb Carbon logo

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.

Endeavor Composites logo

Endeavor Composites

Manufacturing & Processing

Sustainably repurposing landfill-destined post-industrial fibers into semi-finished goods for the composite industry

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Arbon logo

Arbon

Energy & Power

Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization

NW NA logo

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®).

Transaera logo

Transaera

Infrastructure & Construction

Ultra-efficient air conditioning using a novel desiccant material

Solas Capture logo

Solas Capture

Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

CZAR Power logo

CZAR Power

Energy & Power

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

VentureWell logo

VentureWell

Top Grain Technologies logo

Top Grain Technologies

Energy & Power

Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

Prime Lightworks logo

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.

Ignition Packaging logo

Ignition Packaging

About the Company Ignition Packaging is a biomaterials company developing scalable, cost-competitive alternatives to conventional petroleum-based foams. Ignition Packaging’s core technology transforms agricultural byproducts into a high-performance, biodegradable foam engineered […]

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Prophet AI logo

Prophet AI

Food, Water, & Land

AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions

Topl logo

Topl

Infrastructure & Construction

Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.

Sunforge logo

Sunforge

Energy & Power

Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

Datavedik logo

Datavedik

Energy & Power

Addressing complex optimization challenges in the energy industry

Boronite logo

Boronite

Manufacturing & Processing

ZettaConn logo

ZettaConn

Energy & Power

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

OpConnect logo

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.

Maxwellian logo

Maxwellian

Energy & Power

Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Solas Capture logo

Solas Capture

Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

CZAR Power logo

CZAR Power

Energy & Power

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

VentureWell logo

VentureWell

Top Grain Technologies logo

Top Grain Technologies

Energy & Power

Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

Prime Lightworks logo

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.

Ignition Packaging logo

Ignition Packaging

About the Company Ignition Packaging is a biomaterials company developing scalable, cost-competitive alternatives to conventional petroleum-based foams. Ignition Packaging’s core technology transforms agricultural byproducts into a high-performance, biodegradable foam engineered […]

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Prophet AI logo

Prophet AI

Food, Water, & Land

AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions

Topl logo

Topl

Infrastructure & Construction

Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.

Sunforge logo

Sunforge

Energy & Power

Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

Datavedik logo

Datavedik

Energy & Power

Addressing complex optimization challenges in the energy industry

Boronite logo

Boronite

Manufacturing & Processing

ZettaConn logo

ZettaConn

Energy & Power

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

OpConnect logo

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.

Maxwellian logo

Maxwellian

Energy & Power

Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Greentown member working in a wet lab
Greentown community members collaborating
Greentown member pipetting in a lab
Greentown members at work in the incubator
[ 03 ]Who We Are

Greentown is a 501(c)(3) nonprofit helping climate entrepreneurs build faster.

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.

[ 04 ]By The Numbers

Our Impact

Our members aren't just building better ways to operate; they're slashing emissions, boosting efficiency, and transforming how we use resources across the world. Now 15 years and counting, the impact speaks for itself.
Capital Mobilized

Our Startups Have Raised Over $0B

2011Now
Startups Supported

All-time

0

Currently home to

0

Global Footprint

0+

Countries Where
Startups Operate

Jobs Created

0

New Jobs Created by Our Members, and Counting

[ 05 ]Our Partners

Where Industry Meets Innovation

Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.

  • Amazon
  • Amrize
  • Aramco
  • BCG
  • Chevron
  • Dassault Systemes
  • Emerson
  • Enel
  • Equinor
  • Foley Hoag
  • Fortescue
  • GeSI
  • GE Vernova
  • OnTerris (fka Montrose)
  • Saint-Gobain
  • Shell
  • TotalEnergies
  • Vinson & Elkins
  • Woodside Energy
For Startups

Apply for Membership

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.

Greentown member prototyping hardware in the lab
For Partners
Greentown partners networking at an event

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.

Explore Partnership
Events
Speaker presenting on stage at a Greentown event

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.

View Calendar
For Investors
Founders and investors connecting at a Greentown incubator

Explore Investing

Tap into deal flow with the world’s largest community of climate and energy startups.

Explore Investing