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
Agrilab Technologies Inc. logo

Agrilab Technologies Inc.

Food, Water, & Land

Modular compost-aeration and heat-recovery systems

Cella Mineral Storage logo

Cella Mineral Storage

Manufacturing & Processing

Turning volcanic formations into reliable, low-cost CO₂ storage

Electric Hydrogen logo

Electric Hydrogen

Energy & Power

Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen

Ententia logo

Ententia

Energy & Power

Trusted, scalable enterprise AI solutions that turn context into competitive advantage

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Saint-Gobain (Member Account) logo

Saint-Gobain (Member Account)

Infrastructure & Construction

Worldwide leader in light and sustainable construction

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Lumiere Solutions logo

Lumiere Solutions

Infrastructure & Construction

Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

Cala Systems logo

Cala Systems

Energy & Power

Intelligent heat-pump water heaters

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 […]

Tato Labs logo

Tato Labs

Manufacturing & Processing

Bioplastic products and packaging solutions made from potato starch

Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

AMPeers logo

AMPeers

Energy & Power

Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost

change:WATER Labs logo

change:WATER Labs

Food, Water, & Land

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

HEXAspec logo

HEXAspec

Energy & Power

Thermal management solutions for semiconductor chips, enabling more powerful hardware

Conduit Tech logo

Conduit Tech

Infrastructure & Construction

Supporting HVAC contractors through design, sales, and installation

Encore CO2 logo

Encore CO2

Manufacturing & Processing

Converting captured CO₂ into valuable industrial molecules

ATS Energy logo

ATS Energy

Energy & Power

Converting waste heat into power without any moving parts

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Agrilab Technologies Inc. logo

Agrilab Technologies Inc.

Food, Water, & Land

Modular compost-aeration and heat-recovery systems

Cella Mineral Storage logo

Cella Mineral Storage

Manufacturing & Processing

Turning volcanic formations into reliable, low-cost CO₂ storage

Electric Hydrogen logo

Electric Hydrogen

Energy & Power

Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen

Ententia logo

Ententia

Energy & Power

Trusted, scalable enterprise AI solutions that turn context into competitive advantage

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Saint-Gobain (Member Account) logo

Saint-Gobain (Member Account)

Infrastructure & Construction

Worldwide leader in light and sustainable construction

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Lumiere Solutions logo

Lumiere Solutions

Infrastructure & Construction

Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

Cala Systems logo

Cala Systems

Energy & Power

Intelligent heat-pump water heaters

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 […]

Tato Labs logo

Tato Labs

Manufacturing & Processing

Bioplastic products and packaging solutions made from potato starch

Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

AMPeers logo

AMPeers

Energy & Power

Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost

change:WATER Labs logo

change:WATER Labs

Food, Water, & Land

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

HEXAspec logo

HEXAspec

Energy & Power

Thermal management solutions for semiconductor chips, enabling more powerful hardware

Conduit Tech logo

Conduit Tech

Infrastructure & Construction

Supporting HVAC contractors through design, sales, and installation

Encore CO2 logo

Encore CO2

Manufacturing & Processing

Converting captured CO₂ into valuable industrial molecules

ATS Energy logo

ATS Energy

Energy & Power

Converting waste heat into power without any moving parts

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Intention logo

Intention

Energy & Power

Climate-infrastructure-investment platform

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

Carbonext logo

Carbonext

Manufacturing & Processing

3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes

Ocean Visuals logo

Ocean Visuals

Food, Water, & Land

Patented hyper-spectral LiDAR for real-time detection of oil and organics

Teal Bio logo

Teal Bio

Manufacturing & Processing

Reusable N95 respirator system for healthcare workers to reduce landfill waste

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Form Energy logo

Form Energy

Energy & Power

Cost-effective, multi-day energy-storage solutions

Rotorvault logo

Rotorvault

Energy & Power

Energy-storage and load-following solutions for grid-scale and commercial applications

Provocative logo

Provocative

Manufacturing & Processing

Replacing data centers’ cooling systems with carbon capture

Prophet AI logo

Prophet AI

Food, Water, & Land

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

Sparkplug Power logo

Sparkplug Power

Energy & Power

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

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

SPHINX INC logo

SPHINX INC

Energy & Power

High-speed 24/7 energy trading with blockchain clarity and instant settlement

Prithvi Ventures logo

Prithvi Ventures

Investing in startups reducing emissions with unique solutions for net-zero goals

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

BLU NXT logo

BLU NXT

Energy & Power

Solar concentrators for high-temperature heat and energy

AdaViv logo

AdaViv

Food, Water, & Land

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

Next Rung Technology logo

Next Rung Technology

Manufacturing & Processing

Supporting clean technologies in their commercialization journeys with expert engineering consulting

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

Fresh Inset logo

Fresh Inset

Food, Water, & Land

Improving fresh produce’s shelf life, appearance, and quality

Intention logo

Intention

Energy & Power

Climate-infrastructure-investment platform

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

Carbonext logo

Carbonext

Manufacturing & Processing

3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes

Ocean Visuals logo

Ocean Visuals

Food, Water, & Land

Patented hyper-spectral LiDAR for real-time detection of oil and organics

Teal Bio logo

Teal Bio

Manufacturing & Processing

Reusable N95 respirator system for healthcare workers to reduce landfill waste

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Form Energy logo

Form Energy

Energy & Power

Cost-effective, multi-day energy-storage solutions

Rotorvault logo

Rotorvault

Energy & Power

Energy-storage and load-following solutions for grid-scale and commercial applications

Provocative logo

Provocative

Manufacturing & Processing

Replacing data centers’ cooling systems with carbon capture

Prophet AI logo

Prophet AI

Food, Water, & Land

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

Sparkplug Power logo

Sparkplug Power

Energy & Power

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

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

SPHINX INC logo

SPHINX INC

Energy & Power

High-speed 24/7 energy trading with blockchain clarity and instant settlement

Prithvi Ventures logo

Prithvi Ventures

Investing in startups reducing emissions with unique solutions for net-zero goals

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

BLU NXT logo

BLU NXT

Energy & Power

Solar concentrators for high-temperature heat and energy

AdaViv logo

AdaViv

Food, Water, & Land

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

Next Rung Technology logo

Next Rung Technology

Manufacturing & Processing

Supporting clean technologies in their commercialization journeys with expert engineering consulting

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

Fresh Inset logo

Fresh Inset

Food, Water, & Land

Improving fresh produce’s shelf life, appearance, and quality

[ 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