Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Spaero Bio logo

Spaero Bio

Infrastructure & Construction

Spaero Bio — enables scientists to quickly and directly automate experiments that are currently done by hand, a bottleneck of life science R&D.

Via Separations logo

Via Separations

Manufacturing & Processing

Via Separations — is developing a new membrane material to make manufacturing processes more energy efficient—transforming the production of things like fertilizer and nylon, and with the potential to save a gigaton of carbon each year.

CERT Systems logo

CERT Systems

Manufacturing & Processing

Pecos Wind Power logo

Pecos Wind Power

Energy & Power

Pecos Wind Power — is reducing the cost of distributed wind power through the development of an 85kW community-scale wind turbine.

Launch Academy logo

Launch Academy

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

NeuroBionics logo

NeuroBionics

Manufacturing & Processing

Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Embr Labs logo

Embr Labs

Verdicity logo

Verdicity

Infrastructure & Construction

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

EVLO Energy Storage logo

EVLO Energy Storage

Energy & Power

Dexai Robotics logo

Dexai Robotics

Food, Water, & Land

Pika Energy logo

Pika Energy

Energy & Power

Wiggins Manufacturing & Logistics Consulting logo

Wiggins Manufacturing & Logistics Consulting

Manufacturing & Processing

Help US manufacturers and supply chain companies design new facilities and Lean out existing ones.

MicroAvionics logo

MicroAvionics

Transportation & Logistics

FAST Metals logo

FAST Metals

Manufacturing & Processing

Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Fresh Inset logo

Fresh Inset

Food, Water, & Land

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

Upstream Tech logo

Upstream Tech

Energy & Power

Software that expands access to environmental data through remote monitoring and reporting for seasonal forecasts

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

Apitronics logo

Apitronics

Food, Water, & Land

Spaero Bio logo

Spaero Bio

Infrastructure & Construction

Spaero Bio — enables scientists to quickly and directly automate experiments that are currently done by hand, a bottleneck of life science R&D.

Via Separations logo

Via Separations

Manufacturing & Processing

Via Separations — is developing a new membrane material to make manufacturing processes more energy efficient—transforming the production of things like fertilizer and nylon, and with the potential to save a gigaton of carbon each year.

CERT Systems logo

CERT Systems

Manufacturing & Processing

Pecos Wind Power logo

Pecos Wind Power

Energy & Power

Pecos Wind Power — is reducing the cost of distributed wind power through the development of an 85kW community-scale wind turbine.

Launch Academy logo

Launch Academy

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

NeuroBionics logo

NeuroBionics

Manufacturing & Processing

Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Embr Labs logo

Embr Labs

Verdicity logo

Verdicity

Infrastructure & Construction

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

EVLO Energy Storage logo

EVLO Energy Storage

Energy & Power

Dexai Robotics logo

Dexai Robotics

Food, Water, & Land

Pika Energy logo

Pika Energy

Energy & Power

Wiggins Manufacturing & Logistics Consulting logo

Wiggins Manufacturing & Logistics Consulting

Manufacturing & Processing

Help US manufacturers and supply chain companies design new facilities and Lean out existing ones.

MicroAvionics logo

MicroAvionics

Transportation & Logistics

FAST Metals logo

FAST Metals

Manufacturing & Processing

Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Fresh Inset logo

Fresh Inset

Food, Water, & Land

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

Upstream Tech logo

Upstream Tech

Energy & Power

Software that expands access to environmental data through remote monitoring and reporting for seasonal forecasts

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

Apitronics logo

Apitronics

Food, Water, & Land

Starfield logo

Starfield

Food, Water, & Land

Cella Mineral Storage logo

Cella Mineral Storage

Manufacturing & Processing

Turning volcanic formations into reliable, low-cost CO₂ storage

Accion Systems logo

Accion Systems

Transportation & Logistics

Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Riptide Autonomous Solutions logo

Riptide Autonomous Solutions

Transportation & Logistics

Gemini Energy logo

Gemini Energy

We are building the world first unified system for hydrogen compression and purification at 100% recovery rate and 99.999% purity.

Eos Loan logo

Eos Loan

Energy & Power

ZwitterCo logo

ZwitterCo

Food, Water, & Land

Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

Cocoa Potash logo

Cocoa Potash

Food, Water, & Land

CGIS logo

CGIS

Energy & Power

Ohm Analytics logo

Ohm Analytics

Energy & Power

Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Heliotrope Photonics logo

Heliotrope Photonics

Energy & Power

Coating technology that enhances solar-panel performance by transforming wasted sunlight

Sol Clarity logo

Sol Clarity

Energy & Power

Sol Clarity — Solar panels need cleaning but there’s not enough water for it – with EDS just flip a switch to watch dust disappear. Dust settles, they don’t!

Reframe Systems logo

Reframe Systems

Infrastructure & Construction

Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories

Spare-it logo

Spare-it

Manufacturing & Processing

Spare-it — is a catalyst for sustainability in the workplace.

KP Labs logo

KP Labs

Manufacturing & Processing

Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Capro-X logo

Capro-X

Food, Water, & Land

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

Raptor Maps logo

Raptor Maps

Energy & Power

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

Starfield logo

Starfield

Food, Water, & Land

Cella Mineral Storage logo

Cella Mineral Storage

Manufacturing & Processing

Turning volcanic formations into reliable, low-cost CO₂ storage

Accion Systems logo

Accion Systems

Transportation & Logistics

Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Riptide Autonomous Solutions logo

Riptide Autonomous Solutions

Transportation & Logistics

Gemini Energy logo

Gemini Energy

We are building the world first unified system for hydrogen compression and purification at 100% recovery rate and 99.999% purity.

Eos Loan logo

Eos Loan

Energy & Power

ZwitterCo logo

ZwitterCo

Food, Water, & Land

Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

Cocoa Potash logo

Cocoa Potash

Food, Water, & Land

CGIS logo

CGIS

Energy & Power

Ohm Analytics logo

Ohm Analytics

Energy & Power

Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Heliotrope Photonics logo

Heliotrope Photonics

Energy & Power

Coating technology that enhances solar-panel performance by transforming wasted sunlight

Sol Clarity logo

Sol Clarity

Energy & Power

Sol Clarity — Solar panels need cleaning but there’s not enough water for it – with EDS just flip a switch to watch dust disappear. Dust settles, they don’t!

Reframe Systems logo

Reframe Systems

Infrastructure & Construction

Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories

Spare-it logo

Spare-it

Manufacturing & Processing

Spare-it — is a catalyst for sustainability in the workplace.

KP Labs logo

KP Labs

Manufacturing & Processing

Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Capro-X logo

Capro-X

Food, Water, & Land

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

Raptor Maps logo

Raptor Maps

Energy & Power

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

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