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
Glimpse Engineering logo

Glimpse Engineering

Manufacturing & Processing

Visualizing battery scans and continuously monitoring key battery-design features

Matterworks logo

Matterworks

Manufacturing & Processing

Enabling metabolomics assays that are fast, broad, and can characterize diverse chemical classes with a single setup

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

AmHyTech logo

AmHyTech

Energy & Power

Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions

NOC Energy logo

NOC Energy

Energy & Power

Decarbonizing industrial heat with power-to-heat and power-to-power solutions

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Andros Innovations logo

Andros Innovations

Manufacturing & Processing

Reducing the costs and energy demands of ammonia production through advanced reactor technology

SRGE logo

SRGE

Infrastructure & Construction

Full-service accelerator to support small and underrepresented-led construction firms

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

SUPERGirls Shine Foundation logo

SUPERGirls Shine Foundation

Energy & Power

Developing underserved girls in STEM to support equity in the emerging workforce

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Powerhouse Ventures logo

Powerhouse Ventures

Infrastructure & Construction

Investing in software to advance clean energy, mobility, and industry

Realizse logo

Realizse

Energy & Power

Tokenization and product verification for circularity, energy, and the real estate markets

Titan Advanced Energy Solutions logo

Titan Advanced Energy Solutions

Energy & Power

Advanced battery management systems for lithium-ion batteries

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

QEA Tech logo

QEA Tech

Energy & Power

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

Flux Marine logo

Flux Marine

Transportation & Logistics

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

Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Vecarius logo

Vecarius

Infrastructure & Construction

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

Glimpse Engineering logo

Glimpse Engineering

Manufacturing & Processing

Visualizing battery scans and continuously monitoring key battery-design features

Matterworks logo

Matterworks

Manufacturing & Processing

Enabling metabolomics assays that are fast, broad, and can characterize diverse chemical classes with a single setup

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

AmHyTech logo

AmHyTech

Energy & Power

Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions

NOC Energy logo

NOC Energy

Energy & Power

Decarbonizing industrial heat with power-to-heat and power-to-power solutions

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Andros Innovations logo

Andros Innovations

Manufacturing & Processing

Reducing the costs and energy demands of ammonia production through advanced reactor technology

SRGE logo

SRGE

Infrastructure & Construction

Full-service accelerator to support small and underrepresented-led construction firms

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

SUPERGirls Shine Foundation logo

SUPERGirls Shine Foundation

Energy & Power

Developing underserved girls in STEM to support equity in the emerging workforce

TransOceans Clean Energy Risk, LLC logo

TransOceans Clean Energy Risk, LLC

Energy & Power

Risk management solutions for global clean tech risk portfolios

Powerhouse Ventures logo

Powerhouse Ventures

Infrastructure & Construction

Investing in software to advance clean energy, mobility, and industry

Realizse logo

Realizse

Energy & Power

Tokenization and product verification for circularity, energy, and the real estate markets

Titan Advanced Energy Solutions logo

Titan Advanced Energy Solutions

Energy & Power

Advanced battery management systems for lithium-ion batteries

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

QEA Tech logo

QEA Tech

Energy & Power

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

Flux Marine logo

Flux Marine

Transportation & Logistics

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

Swan Impact Network logo

Swan Impact Network

Infrastructure & Construction

Angel investor network focusing on supporting early-stage companies

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Vecarius logo

Vecarius

Infrastructure & Construction

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

rStream Recycling LLC logo

rStream Recycling LLC

Manufacturing & Processing

Autonomous waste-sorting system for non-industrial settings with critical waste volumes

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Rotorvault logo

Rotorvault

Energy & Power

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

Boxes logo

Boxes

Manufacturing & Processing

Smart, affordable, and sustainable retail combining the physical and digital worlds

Laminar logo

Laminar

Manufacturing & Processing

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

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Zero Homes logo

Zero Homes

Infrastructure & Construction

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

Ivys Energy Solutions logo

Ivys Energy Solutions

Energy & Power

On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Anvil Capture Systems logo

Anvil Capture Systems

Manufacturing & Processing

CO2 direct air mineralization process, delivering carbon dioxide removal

Datavedik logo

Datavedik

Energy & Power

Addressing complex optimization challenges in the energy industry

Terralytiq logo

Terralytiq

Manufacturing & Processing

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

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Enel (Member Account) logo

Enel (Member Account)

Energy & Power

One of the world’s leading integrated utilities and the largest private producer of clean energy

BLU NXT logo

BLU NXT

Energy & Power

Solar concentrators for high-temperature heat and energy

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

Onboard Data logo

Onboard Data

Infrastructure & Construction

Onboard — offers software analytics for HVAC service providers.

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

rStream Recycling LLC logo

rStream Recycling LLC

Manufacturing & Processing

Autonomous waste-sorting system for non-industrial settings with critical waste volumes

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Rotorvault logo

Rotorvault

Energy & Power

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

Boxes logo

Boxes

Manufacturing & Processing

Smart, affordable, and sustainable retail combining the physical and digital worlds

Laminar logo

Laminar

Manufacturing & Processing

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

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Zero Homes logo

Zero Homes

Infrastructure & Construction

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

Ivys Energy Solutions logo

Ivys Energy Solutions

Energy & Power

On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Anvil Capture Systems logo

Anvil Capture Systems

Manufacturing & Processing

CO2 direct air mineralization process, delivering carbon dioxide removal

Datavedik logo

Datavedik

Energy & Power

Addressing complex optimization challenges in the energy industry

Terralytiq logo

Terralytiq

Manufacturing & Processing

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

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Enel (Member Account) logo

Enel (Member Account)

Energy & Power

One of the world’s leading integrated utilities and the largest private producer of clean energy

BLU NXT logo

BLU NXT

Energy & Power

Solar concentrators for high-temperature heat and energy

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

Onboard Data logo

Onboard Data

Infrastructure & Construction

Onboard — offers software analytics for HVAC service providers.

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

[ 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