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
Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

NewGenium logo

NewGenium

Energy & Power

Advanced brine-to-battery grade LFP technology

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

TDS Select logo

TDS Select

Food, Water, & Land

Modular, scalable FCDI system capable of desalinating brackish water using low energy

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Laminar logo

Laminar

Manufacturing & Processing

IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers

QEA Tech logo

QEA Tech

Energy & Power

Precise, data-driven building-envelope audits using patented AI software, drones, and thermography

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Agrilab Technologies Inc. logo

Agrilab Technologies Inc.

Food, Water, & Land

Modular compost-aeration and heat-recovery systems

RIVSAL HOLDINGS INC. logo

RIVSAL HOLDINGS INC.

Energy & Power

Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility

Capro-X logo

Capro-X

Food, Water, & Land

Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals

SRECTrade logo

SRECTrade

Energy & Power

Management and transaction platform for environmental commodities to reduce costs and increase transparency

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Kauel logo

Kauel

Energy & Power

Software that detects industrial threats to prevent environmental risks and catastrophes

Sparkplug Power logo

Sparkplug Power

Energy & Power

Energy-storage-as-a-service for municipal utilities and commercial businesses

Vecarius logo

Vecarius

Infrastructure & Construction

Heat-to-electricity technology to boost energy efficiency in mass markets

Mocean Energy logo

Mocean Energy

Energy & Power

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

Raptor Maps logo

Raptor Maps

Energy & Power

AI software to increase solar farm power production, reduce operational risk, and lower costs

Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

NewGenium logo

NewGenium

Energy & Power

Advanced brine-to-battery grade LFP technology

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

TDS Select logo

TDS Select

Food, Water, & Land

Modular, scalable FCDI system capable of desalinating brackish water using low energy

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Laminar logo

Laminar

Manufacturing & Processing

IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers

QEA Tech logo

QEA Tech

Energy & Power

Precise, data-driven building-envelope audits using patented AI software, drones, and thermography

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Agrilab Technologies Inc. logo

Agrilab Technologies Inc.

Food, Water, & Land

Modular compost-aeration and heat-recovery systems

RIVSAL HOLDINGS INC. logo

RIVSAL HOLDINGS INC.

Energy & Power

Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility

Capro-X logo

Capro-X

Food, Water, & Land

Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals

SRECTrade logo

SRECTrade

Energy & Power

Management and transaction platform for environmental commodities to reduce costs and increase transparency

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Kauel logo

Kauel

Energy & Power

Software that detects industrial threats to prevent environmental risks and catastrophes

Sparkplug Power logo

Sparkplug Power

Energy & Power

Energy-storage-as-a-service for municipal utilities and commercial businesses

Vecarius logo

Vecarius

Infrastructure & Construction

Heat-to-electricity technology to boost energy efficiency in mass markets

Mocean Energy logo

Mocean Energy

Energy & Power

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

Raptor Maps logo

Raptor Maps

Energy & Power

AI software to increase solar farm power production, reduce operational risk, and lower costs

Flux Marine logo

Flux Marine

Transportation & Logistics

Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance

NewGrid logo

NewGrid

Energy & Power

Software and services to enable system operators, utilities, and power market participants to reduce grid congestion

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

Verdicity logo

Verdicity

Infrastructure & Construction

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

Dottir Labs logo

Dottir Labs

Food, Water, & Land

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

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

SpiralWave logo

SpiralWave

Manufacturing & Processing

Low-cost, scalable, high-quality carbon removal using novel electrochemistry

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

change:WATER Labs logo

change:WATER Labs

Food, Water, & Land

Low-cost, compact, waterless toilet for non-sewered households and communities

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Infinite Foundry logo

Infinite Foundry

Manufacturing & Processing

Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

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

Upgraid RE logo

Upgraid RE

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

Sublime Systems logo

Sublime Systems

Infrastructure & Construction

Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns

NONA Technologies logo

NONA Technologies

Food, Water, & Land

Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

Simlionics logo

Simlionics

Energy & Power

Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

Flux Marine logo

Flux Marine

Transportation & Logistics

Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance

NewGrid logo

NewGrid

Energy & Power

Software and services to enable system operators, utilities, and power market participants to reduce grid congestion

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

Verdicity logo

Verdicity

Infrastructure & Construction

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

Dottir Labs logo

Dottir Labs

Food, Water, & Land

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

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

SpiralWave logo

SpiralWave

Manufacturing & Processing

Low-cost, scalable, high-quality carbon removal using novel electrochemistry

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

change:WATER Labs logo

change:WATER Labs

Food, Water, & Land

Low-cost, compact, waterless toilet for non-sewered households and communities

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Infinite Foundry logo

Infinite Foundry

Manufacturing & Processing

Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

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

Upgraid RE logo

Upgraid RE

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

Sublime Systems logo

Sublime Systems

Infrastructure & Construction

Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns

NONA Technologies logo

NONA Technologies

Food, Water, & Land

Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

Simlionics logo

Simlionics

Energy & Power

Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

[ 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