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.
Kausalyze
Manufacturing & Processing
True root-cause analysis for chemicals, energy, and pharmaceutical companies
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
BlueShift Carbon
Manufacturing & Processing
Electrochemical CO₂-removal solution that’s low-cost, energy-efficient, redox-based, and membrane-free
Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale
Octavia Carbon Co
Manufacturing & Processing
Geothermal heat to capture and mineralize CO₂
Cemvita
Manufacturing & Processing
Engineered microbes to transform CO₂ and other wastes into valuable compounds, closing the carbon and waste loop
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
COI Energy
Energy & Power
AI and machine learning to predict and prevent energy waste
Ententia
Energy & Power
Trusted, scalable enterprise AI solutions that turn context into competitive advantage
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
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.
Kausalyze
Manufacturing & Processing
True root-cause analysis for chemicals, energy, and pharmaceutical companies
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
BlueShift Carbon
Manufacturing & Processing
Electrochemical CO₂-removal solution that’s low-cost, energy-efficient, redox-based, and membrane-free
Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale
Octavia Carbon Co
Manufacturing & Processing
Geothermal heat to capture and mineralize CO₂
Cemvita
Manufacturing & Processing
Engineered microbes to transform CO₂ and other wastes into valuable compounds, closing the carbon and waste loop
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
COI Energy
Energy & Power
AI and machine learning to predict and prevent energy waste
Ententia
Energy & Power
Trusted, scalable enterprise AI solutions that turn context into competitive advantage
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
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.
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Datavedik
Energy & Power
Addressing complex optimization challenges in the energy industry
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
EnergyGigs
Food, Water, & Land
Talent and freelance platform for the energy industry
Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency
rStream Recycling LLC
Manufacturing & Processing
Autonomous waste-sorting system for non-industrial settings with critical waste volumes
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
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
eSki Watercraft
Energy & Power
Electric personal watercraft
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
NOC Energy
Energy & Power
Decarbonizing industrial heat with power-to-heat and power-to-power solutions
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Datavedik
Energy & Power
Addressing complex optimization challenges in the energy industry
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
EnergyGigs
Food, Water, & Land
Talent and freelance platform for the energy industry
Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency
rStream Recycling LLC
Manufacturing & Processing
Autonomous waste-sorting system for non-industrial settings with critical waste volumes
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
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
eSki Watercraft
Energy & Power
Electric personal watercraft
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
NOC Energy
Energy & Power
Decarbonizing industrial heat with power-to-heat and power-to-power solutions
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
Our Startups Have Raised Over $0B
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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.