Transforming industry faster
Transforming the systems that power, move, feed, and connect the world is the work of our time, and startups hold the key.
But 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.

ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios

Biospheric AI
Energy & Power
High-resolution, building-level energy demand forecasts for utilities and more

InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy

Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂

Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

Lumiere Solutions
Infrastructure & Construction
Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste

Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries

Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps

Harmony Desalting
Food, Water, & Land
Batch-process reverse osmosis for low-cost water desalination

Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams

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

Thalon Materials

Datavedik
Energy & Power
Addressing complex optimization challenges in the energy industry

Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel

Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels

ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios

Biospheric AI
Energy & Power
High-resolution, building-level energy demand forecasts for utilities and more

InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy

Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂

Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

Lumiere Solutions
Infrastructure & Construction
Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste

Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries

Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps

Harmony Desalting
Food, Water, & Land
Batch-process reverse osmosis for low-cost water desalination

Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams

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

Thalon Materials

Datavedik
Energy & Power
Addressing complex optimization challenges in the energy industry

Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel

Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels

Trellis Air
Infrastructure & Construction
Membrane-based dehumidifiers that are vastly more energy-efficient than desiccant wheels and standalone dehumidifiers

Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings

Element Resources
Energy & Power
Developing large-scale green hydrogen projects

Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation

GeoTeknica
Manufacturing & Processing

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

DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes

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

ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management

Saint-Gobain (Member Account)
Infrastructure & Construction
Worldwide leader in light and sustainable construction

Orien Energy
Infrastructure & Construction
Sorption heat pump to recover waste heat from dryer exhaust

Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability

HKG Energy
Energy & Power
Silicon materials that increase battery energy density

MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability

Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds

BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company

Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors

Cala Systems
Energy & Power
Intelligent heat-pump water heaters

Trellis Air
Infrastructure & Construction
Membrane-based dehumidifiers that are vastly more energy-efficient than desiccant wheels and standalone dehumidifiers

Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings

Element Resources
Energy & Power
Developing large-scale green hydrogen projects

Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation

GeoTeknica
Manufacturing & Processing

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

DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes

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

ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management

Saint-Gobain (Member Account)
Infrastructure & Construction
Worldwide leader in light and sustainable construction

Orien Energy
Infrastructure & Construction
Sorption heat pump to recover waste heat from dryer exhaust

Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability

HKG Energy
Energy & Power
Silicon materials that increase battery energy density

MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability

Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds

BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company

Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors

Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Our Startups Have Raised Over $0B
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Currently home to
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Startups Operate
12,915 new jobs created by our members, and counting
Boston
7,492
Houston
5,423
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.


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.

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.

Learn About our Programs
In addition to our Boston and Houston incubators, Greentown runs programs designed to address critical challenges in the climatetech ecosystem.
























