Helping entrepreneursTransformindustry

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

Breakthroughs don't scale in isolation.

They scale when entire ecosystems move together: founders, corporates, capital, policy, and communities, united by a shared purpose of propelling groundbreaking technologies to market, at the pace the world requires.

Transforming the systems that power, move, feed, and connect the world is the work of our time, and startups hold the key.

Our Vision

Greentown is a 501(c)(3) non-profit organization

[ 03 ]Our Startups

Our Member Companies

View All Startups
PV Nano Cell logo

PV Nano Cell

Energy & Power

Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

Janta Power logo

Janta Power

Energy & Power

The world’s first 3D solar tower technology

WISE ENERGIE logo

WISE ENERGIE

Energy & Power

Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power

Turnover Labs logo

Turnover Labs

Manufacturing & Processing

Modular electrolyzers converting dirty onsite CO₂ into basic chemicals

Vertical Semiconductor logo

Vertical Semiconductor

Energy & Power

Power supply units designed to unleash the full potential of AI & HPC

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.

Ecobrew logo

Ecobrew

Food, Water, & Land

Recycling clean CO₂ at the source for a circular supply, local reuse, or sale

Verdicity logo

Verdicity

Infrastructure & Construction

AI-enabled, customizable smart building, information, and facility services for building vendors

Adiabatic Materials logo

Adiabatic Materials

Manufacturing & Processing

Unlocking clean, affordable chemical production with electricity

Dottir Labs logo

Dottir Labs

Food, Water, & Land

Sensor technology that provides real-time, detailed chemical analysis of water

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Zero Homes logo

Zero Homes

Infrastructure & Construction

Automated assessment, design, and procurement platform for residential building retrofits

De-Ice logo

De-Ice

Transportation & Logistics

Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Dugu Systems logo

Dugu Systems

Energy & Power

Zero-carbon power with an emissions-free gas turbine

Kausalyze logo

Kausalyze

Manufacturing & Processing

True root-cause analysis for chemicals, energy, and pharmaceutical companies

String Data Motion logo

String Data Motion

Infrastructure & Construction

Agentic AI for energy companies. Agents in motion. Outcomes delivered.

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

PV Nano Cell logo

PV Nano Cell

Energy & Power

Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

Janta Power logo

Janta Power

Energy & Power

The world’s first 3D solar tower technology

WISE ENERGIE logo

WISE ENERGIE

Energy & Power

Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power

Turnover Labs logo

Turnover Labs

Manufacturing & Processing

Modular electrolyzers converting dirty onsite CO₂ into basic chemicals

Vertical Semiconductor logo

Vertical Semiconductor

Energy & Power

Power supply units designed to unleash the full potential of AI & HPC

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.

Ecobrew logo

Ecobrew

Food, Water, & Land

Recycling clean CO₂ at the source for a circular supply, local reuse, or sale

Verdicity logo

Verdicity

Infrastructure & Construction

AI-enabled, customizable smart building, information, and facility services for building vendors

Adiabatic Materials logo

Adiabatic Materials

Manufacturing & Processing

Unlocking clean, affordable chemical production with electricity

Dottir Labs logo

Dottir Labs

Food, Water, & Land

Sensor technology that provides real-time, detailed chemical analysis of water

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Zero Homes logo

Zero Homes

Infrastructure & Construction

Automated assessment, design, and procurement platform for residential building retrofits

De-Ice logo

De-Ice

Transportation & Logistics

Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Dugu Systems logo

Dugu Systems

Energy & Power

Zero-carbon power with an emissions-free gas turbine

Kausalyze logo

Kausalyze

Manufacturing & Processing

True root-cause analysis for chemicals, energy, and pharmaceutical companies

String Data Motion logo

String Data Motion

Infrastructure & Construction

Agentic AI for energy companies. Agents in motion. Outcomes delivered.

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

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 […]

Encore CO2 logo

Encore CO2

Manufacturing & Processing

Converting captured CO₂ into valuable industrial molecules

Singularity Energy logo

Singularity Energy

Energy & Power

Data and software solutions for grid decarbonization

Daniel Consulting Group, LLC logo

Daniel Consulting Group, LLC

Energy & Power

Helping researchers improve battery and cell testing and providing due diligence for potential investors

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

AdaViv logo

AdaViv

Food, Water, & Land

Hardware-enabled crop-care software for greenhouse and indoor growers to maximize quality yields without added labor

Nominal logo

Nominal

Manufacturing & Processing

Software that lets hardware teams test and iterate as fast as software teams

Emrod logo

Emrod

Energy & Power

Sustainable power with long-range wireless power transfer technology

Priority Investor Loans logo

Priority Investor Loans

Infrastructure & Construction

Simplified loan programs to fund real estate investors nationwide with income-producing properties

EVident Battery logo

EVident Battery

Transportation & Logistics

Comprehensive, non-destructive inspection solutions for EV battery packs

Teknobuilt logo

Teknobuilt

Infrastructure & Construction

Cloud-based construction project management software

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Biosimo logo

Biosimo

Manufacturing & Processing

Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Thiozen logo

Thiozen

Manufacturing & Processing

Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

NewGenium logo

NewGenium

Energy & Power

Advanced brine-to-battery grade LFP technology

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Sweetch Energy logo

Sweetch Energy

Energy & Power

Membrane-based technology that taps into osmotic power

Latitude Media logo

Latitude Media

News, podcasts, market intelligence, and events for the climatetech industry

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

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 […]

Encore CO2 logo

Encore CO2

Manufacturing & Processing

Converting captured CO₂ into valuable industrial molecules

Singularity Energy logo

Singularity Energy

Energy & Power

Data and software solutions for grid decarbonization

Daniel Consulting Group, LLC logo

Daniel Consulting Group, LLC

Energy & Power

Helping researchers improve battery and cell testing and providing due diligence for potential investors

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

AdaViv logo

AdaViv

Food, Water, & Land

Hardware-enabled crop-care software for greenhouse and indoor growers to maximize quality yields without added labor

Nominal logo

Nominal

Manufacturing & Processing

Software that lets hardware teams test and iterate as fast as software teams

Emrod logo

Emrod

Energy & Power

Sustainable power with long-range wireless power transfer technology

Priority Investor Loans logo

Priority Investor Loans

Infrastructure & Construction

Simplified loan programs to fund real estate investors nationwide with income-producing properties

EVident Battery logo

EVident Battery

Transportation & Logistics

Comprehensive, non-destructive inspection solutions for EV battery packs

Teknobuilt logo

Teknobuilt

Infrastructure & Construction

Cloud-based construction project management software

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Biosimo logo

Biosimo

Manufacturing & Processing

Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Thiozen logo

Thiozen

Manufacturing & Processing

Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

NewGenium logo

NewGenium

Energy & Power

Advanced brine-to-battery grade LFP technology

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Sweetch Energy logo

Sweetch Energy

Energy & Power

Membrane-based technology that taps into osmotic power

Latitude Media logo

Latitude Media

News, podcasts, market intelligence, and events for the climatetech industry

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

[ 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

12,915 new jobs created by our members, and counting

Boston

7,492

Houston

5,423

[ 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
  • Microsoft
  • 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
Programs
Two Greentown program participants in the lab

Learn About our Programs

In addition to our Boston and Houston incubators, Greentown runs programs designed to address critical challenges in the climatetech ecosystem.

Explore Programs