Helping climatetech startupsTransformindustry faster

Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage

Starfire Energy
Energy & Power

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.

Wastewizer Technologies
Transportation & Logistics
Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.

EarthEn
Energy & Power
Enabling electrification through CO₂-based thermodynamic cycle

SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

Heartland Industries
Manufacturing & Processing

Mantel
Manufacturing & Processing
Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology

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.

CarbonFree
Manufacturing & Processing

Return To Vendor
Manufacturing & Processing

Polymer-X
Manufacturing & Processing

Agira
Energy & Power
Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.

Climative
Energy & Power
AI-assisted home-energy assessments deployed in an interactive, web-based platform

WattGlass
Energy & Power

MissionPoint Capital Partners

KUBO Greenhouse Projects
Food, Water, & Land

Corrolytics
Energy & Power
Patented corrosion intelligence platform delivering near real-time corrosion detection and actionable insights

Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them

Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage

Starfire Energy
Energy & Power

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.

Wastewizer Technologies
Transportation & Logistics
Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.

EarthEn
Energy & Power
Enabling electrification through CO₂-based thermodynamic cycle

SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

Heartland Industries
Manufacturing & Processing

Mantel
Manufacturing & Processing
Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology

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.

CarbonFree
Manufacturing & Processing

Return To Vendor
Manufacturing & Processing

Polymer-X
Manufacturing & Processing

Agira
Energy & Power
Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.

Climative
Energy & Power
AI-assisted home-energy assessments deployed in an interactive, web-based platform

WattGlass
Energy & Power

MissionPoint Capital Partners

KUBO Greenhouse Projects
Food, Water, & Land

Corrolytics
Energy & Power
Patented corrosion intelligence platform delivering near real-time corrosion detection and actionable insights

Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them

SolBid
Energy & Power
SolBid — provides businesses with their unique software and services solution that empowers them to efficiently and effectively deploy clean solar energy resources.

Celadyne
Energy & Power

QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

Giner Labs
Energy & Power
At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

WeaveGrid
Energy & Power
WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

Aquasaic
Food, Water, & Land

Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.

Salient Energy
Energy & Power

FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems

Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste

Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.

FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Searover Robotics and Software
Manufacturing & Processing

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Biobot Analytics
Food, Water, & Land

Texas Geothermal Energy Alliance
Energy & Power

Nexus Circular
Manufacturing & Processing

SolBid
Energy & Power
SolBid — provides businesses with their unique software and services solution that empowers them to efficiently and effectively deploy clean solar energy resources.

Celadyne
Energy & Power

QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

Giner Labs
Energy & Power
At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

WeaveGrid
Energy & Power
WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

Aquasaic
Food, Water, & Land

Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.

Salient Energy
Energy & Power

FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems

Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste

Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.

FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Searover Robotics and Software
Manufacturing & Processing

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Biobot Analytics
Food, Water, & Land

Texas Geothermal Energy Alliance
Energy & Power

Nexus Circular
Manufacturing & Processing




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.
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Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.
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.


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Access the most concentrated pipeline of vetted climatetech companies in North America. Partner on pilots, invest, or join as a corporate sponsor.

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