Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Armada AI logo

Armada AI

Sparkplug Power logo

Sparkplug Power

Energy & Power

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

Kausalyze logo

Kausalyze

Manufacturing & Processing

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

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

Blue Line Battery logo

Blue Line Battery

Energy & Power

Blue Line Battery designs and manufactures more accessible, more efficient, battery technology for industrial applications.

Phoenix Tailings logo

Phoenix Tailings

Manufacturing & Processing

Waste-free, net-zero, cost-competitive rare-earth-metal refining

Return To Vendor logo

Return To Vendor

Manufacturing & Processing

Circularise logo

Circularise

Manufacturing & Processing

SpadXTech logo

SpadXTech

Food, Water, & Land

SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.

SRGE logo

SRGE

Infrastructure & Construction

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

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Revora Materials logo

Revora Materials

Energy & Power

Carbon-mineralization technology with high-value minerals and metals recovery

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

M2X Energy logo

M2X Energy

Manufacturing & Processing

Moonshot Compost logo

Moonshot Compost

Manufacturing & Processing

Moonshot Compost — collects and consolidates food waste for composting from businesses and residents, with a focus on data creation and management.

10DQ logo

10DQ

Energy & Power

Battery tech for long-duration energy storage at lower costs and improved safety

Sublime Systems logo

Sublime Systems

Infrastructure & Construction

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

Pre Framing Corp logo

Pre Framing Corp

Infrastructure & Construction

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Armada AI logo

Armada AI

Sparkplug Power logo

Sparkplug Power

Energy & Power

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

Kausalyze logo

Kausalyze

Manufacturing & Processing

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

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

Blue Line Battery logo

Blue Line Battery

Energy & Power

Blue Line Battery designs and manufactures more accessible, more efficient, battery technology for industrial applications.

Phoenix Tailings logo

Phoenix Tailings

Manufacturing & Processing

Waste-free, net-zero, cost-competitive rare-earth-metal refining

Return To Vendor logo

Return To Vendor

Manufacturing & Processing

Circularise logo

Circularise

Manufacturing & Processing

SpadXTech logo

SpadXTech

Food, Water, & Land

SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.

SRGE logo

SRGE

Infrastructure & Construction

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

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Revora Materials logo

Revora Materials

Energy & Power

Carbon-mineralization technology with high-value minerals and metals recovery

GeoTeknica logo

GeoTeknica

Manufacturing & Processing

M2X Energy logo

M2X Energy

Manufacturing & Processing

Moonshot Compost logo

Moonshot Compost

Manufacturing & Processing

Moonshot Compost — collects and consolidates food waste for composting from businesses and residents, with a focus on data creation and management.

10DQ logo

10DQ

Energy & Power

Battery tech for long-duration energy storage at lower costs and improved safety

Sublime Systems logo

Sublime Systems

Infrastructure & Construction

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

Pre Framing Corp logo

Pre Framing Corp

Infrastructure & Construction

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Thalon Materials logo

Thalon Materials

Emerald Cities Collaborative logo

Emerald Cities Collaborative

Infrastructure & Construction

Euphree logo

Euphree

Transportation & Logistics

Electric bikes made fashionable.

Understory logo

Understory

Infrastructure & Construction

Weather hardware and analytics

Corvus Robotics logo

Corvus Robotics

Manufacturing & Processing

Public Grid logo

Public Grid

Energy & Power

Type One Energy logo

Type One Energy

Energy & Power

ConnectDER logo

ConnectDER

Energy & Power

ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.

Enerbrain logo

Enerbrain

Infrastructure & Construction

Skytree logo

Skytree

Food, Water, & Land

Skytree — harnesses carbon through the power of decentralized direct air capture technology. They create one of the world’s smallest and simplest circular carbon solution to transform how food is grown to provide cleaner water.

TalkingHeads Wireless logo

TalkingHeads Wireless

Energy & Power

TalkingHeads Wireless — develops Smart Network Towers, starting with the world’s most energy-efficient remote radio heads (RRH), which is the hardware box that sits at the top of the cell tower.

Fresh Inset logo

Fresh Inset

Food, Water, & Land

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

NBD Nano logo

NBD Nano

Manufacturing & Processing

NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.

SRECTrade logo

SRECTrade

Energy & Power

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

Resolute Methane logo

Resolute Methane

Food, Water, & Land

Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

H2Pro logo

H2Pro

Energy & Power

H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Iron Lattice logo

Iron Lattice

Manufacturing & Processing

Building AI memory that powers human potential.

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Thalon Materials logo

Thalon Materials

Emerald Cities Collaborative logo

Emerald Cities Collaborative

Infrastructure & Construction

Euphree logo

Euphree

Transportation & Logistics

Electric bikes made fashionable.

Understory logo

Understory

Infrastructure & Construction

Weather hardware and analytics

Corvus Robotics logo

Corvus Robotics

Manufacturing & Processing

Public Grid logo

Public Grid

Energy & Power

Type One Energy logo

Type One Energy

Energy & Power

ConnectDER logo

ConnectDER

Energy & Power

ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.

Enerbrain logo

Enerbrain

Infrastructure & Construction

Skytree logo

Skytree

Food, Water, & Land

Skytree — harnesses carbon through the power of decentralized direct air capture technology. They create one of the world’s smallest and simplest circular carbon solution to transform how food is grown to provide cleaner water.

TalkingHeads Wireless logo

TalkingHeads Wireless

Energy & Power

TalkingHeads Wireless — develops Smart Network Towers, starting with the world’s most energy-efficient remote radio heads (RRH), which is the hardware box that sits at the top of the cell tower.

Fresh Inset logo

Fresh Inset

Food, Water, & Land

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

NBD Nano logo

NBD Nano

Manufacturing & Processing

NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.

SRECTrade logo

SRECTrade

Energy & Power

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

Resolute Methane logo

Resolute Methane

Food, Water, & Land

Treating low-concentration methane emissions at the source by thermally oxidizing methane with a novel reactor design

H2Pro logo

H2Pro

Energy & Power

H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Iron Lattice logo

Iron Lattice

Manufacturing & Processing

Building AI memory that powers human potential.

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

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