Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
SiTration logo

SiTration

Manufacturing & Processing

SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Geokiln Energy Innovation logo

Geokiln Energy Innovation

Energy & Power

Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions

Peak Power logo

Peak Power

Energy & Power

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

Kornit Digital logo

Kornit Digital

Manufacturing & Processing

Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Emerald Cities Collaborative logo

Emerald Cities Collaborative

Infrastructure & Construction

Green Path Strategies logo

Green Path Strategies

Energy & Power

Sustonable logo

Sustonable

Manufacturing & Processing

Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.

Lasso Labs logo

Lasso Labs

Food, Water, & Land

Using natural proteins to create real texture in alternative foods

Hera Materials logo

Hera Materials

Manufacturing & Processing

Regenerative plastics made from diverse, local biomass, powered by robotics and AI

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

Feon Energy, Inc. (eLyte Technology) logo

Feon Energy, Inc. (eLyte Technology)

Energy & Power

eLyte — is commercializing next-gen battery technology for electric vehicles and other applications.

Orien Energy logo

Orien Energy

Infrastructure & Construction

Sorption heat pump to recover waste heat from dryer exhaust

WattGlass logo

WattGlass

Energy & Power

Varea Energy logo

Varea Energy

Energy & Power

Varea Energy — aims to help enable the world’s transition to an energy-efficient and sustainable future by rooting out inefficient waste, water, and energy systems to increase sustainability and decrease operational costs for commercial facilities.

Aquosmic Corporation logo

Aquosmic Corporation

Energy & Power

Aquosmic — analyzes any body of water using satellite images and can determine biomass as well.

Verdox Inc logo

Verdox Inc

Manufacturing & Processing

Verdox — is making scalable, cost-effective carbon capture and removal a reality. Founded in late 2019 by Dr. Brian Baynes, Prof. T. Alan Hatton, and Dr. Sahag Voskian, the company is commercializing its electroswing adsorption (ESA) platform technology, originally developed at MIT, to remove carbon dioxide from industrial emissions and the air with 70% energy savings versus conventional approaches.

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

SiTration logo

SiTration

Manufacturing & Processing

SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Geokiln Energy Innovation logo

Geokiln Energy Innovation

Energy & Power

Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions

Peak Power logo

Peak Power

Energy & Power

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

Kornit Digital logo

Kornit Digital

Manufacturing & Processing

Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Emerald Cities Collaborative logo

Emerald Cities Collaborative

Infrastructure & Construction

Green Path Strategies logo

Green Path Strategies

Energy & Power

Sustonable logo

Sustonable

Manufacturing & Processing

Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.

Lasso Labs logo

Lasso Labs

Food, Water, & Land

Using natural proteins to create real texture in alternative foods

Hera Materials logo

Hera Materials

Manufacturing & Processing

Regenerative plastics made from diverse, local biomass, powered by robotics and AI

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

Feon Energy, Inc. (eLyte Technology) logo

Feon Energy, Inc. (eLyte Technology)

Energy & Power

eLyte — is commercializing next-gen battery technology for electric vehicles and other applications.

Orien Energy logo

Orien Energy

Infrastructure & Construction

Sorption heat pump to recover waste heat from dryer exhaust

WattGlass logo

WattGlass

Energy & Power

Varea Energy logo

Varea Energy

Energy & Power

Varea Energy — aims to help enable the world’s transition to an energy-efficient and sustainable future by rooting out inefficient waste, water, and energy systems to increase sustainability and decrease operational costs for commercial facilities.

Aquosmic Corporation logo

Aquosmic Corporation

Energy & Power

Aquosmic — analyzes any body of water using satellite images and can determine biomass as well.

Verdox Inc logo

Verdox Inc

Manufacturing & Processing

Verdox — is making scalable, cost-effective carbon capture and removal a reality. Founded in late 2019 by Dr. Brian Baynes, Prof. T. Alan Hatton, and Dr. Sahag Voskian, the company is commercializing its electroswing adsorption (ESA) platform technology, originally developed at MIT, to remove carbon dioxide from industrial emissions and the air with 70% energy savings versus conventional approaches.

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

TerraFixing logo

TerraFixing

Manufacturing & Processing

TerraFixing — develops a direct-air-capture technology for cold climates using zeolite-based adsorbent materials.

Immedia Power logo

Immedia Power

Energy & Power

Immedia Power gives space-constrained sites the on-site power they need to run and scale without waiting on the grid.

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Electra logo

Electra

Manufacturing & Processing

ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.

NONA Technologies logo

NONA Technologies

Food, Water, & Land

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

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

Deep Anchor Solutions logo

Deep Anchor Solutions

Infrastructure & Construction

Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Electrona Robotics logo

Electrona Robotics

Manufacturing & Processing

AMPeers logo

AMPeers

Energy & Power

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

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

MicroEra Power logo

MicroEra Power

Energy & Power

MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

Paragon Pure logo

Paragon Pure

Food, Water, & Land

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

Sustainable America logo

Sustainable America

Food, Water, & Land

Bevi logo

Bevi

Food, Water, & Land

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

TerraFixing logo

TerraFixing

Manufacturing & Processing

TerraFixing — develops a direct-air-capture technology for cold climates using zeolite-based adsorbent materials.

Immedia Power logo

Immedia Power

Energy & Power

Immedia Power gives space-constrained sites the on-site power they need to run and scale without waiting on the grid.

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Electra logo

Electra

Manufacturing & Processing

ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.

NONA Technologies logo

NONA Technologies

Food, Water, & Land

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

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

Deep Anchor Solutions logo

Deep Anchor Solutions

Infrastructure & Construction

Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Electrona Robotics logo

Electrona Robotics

Manufacturing & Processing

AMPeers logo

AMPeers

Energy & Power

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

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

MicroEra Power logo

MicroEra Power

Energy & Power

MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.

FlowCellutions logo

FlowCellutions

Energy & Power

Preventing power outages and improving cost savings for critical battery systems

Paragon Pure logo

Paragon Pure

Food, Water, & Land

WhaleSpotter logo

WhaleSpotter

Transportation & Logistics

Thermal imaging and AI to prevent marine mammal strikes at sea

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

Sustainable America logo

Sustainable America

Food, Water, & Land

Bevi logo

Bevi

Food, Water, & Land

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