Helping entrepreneursTransformindustry faster
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.
Transforming the systems that power, move, feed, and connect the world is the work of our time, and startups hold the key.
Greentown is a 501(c)(3) non-profit organization
Enel (Member Account)
Energy & Power
One of the world’s leading integrated utilities and the largest private producer of clean energy
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Latitude Media
News, podcasts, market intelligence, and events for the climatetech industry
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Swan Impact Network
Infrastructure & Construction
Angel investor network focusing on supporting early-stage companies
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
ClearTrace
Energy & Power
Product suite for traceable, end-to-end data management of electricity and certificate transactions
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
AmHyTech
Energy & Power
Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Enel (Member Account)
Energy & Power
One of the world’s leading integrated utilities and the largest private producer of clean energy
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Latitude Media
News, podcasts, market intelligence, and events for the climatetech industry
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Swan Impact Network
Infrastructure & Construction
Angel investor network focusing on supporting early-stage companies
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
ClearTrace
Energy & Power
Product suite for traceable, end-to-end data management of electricity and certificate transactions
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
AmHyTech
Energy & Power
Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Matterworks
Manufacturing & Processing
Enabling metabolomics assays that are fast, broad, and can characterize diverse chemical classes with a single setup
ETAK
ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.
Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform
Arbon
Energy & Power
Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization
Carbon To Stone
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Resollant
Manufacturing & Processing
Enables industrial-scale hydrogen & syngas production while capturing carbon as a monetizable solid at scale
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Matterworks
Manufacturing & Processing
Enabling metabolomics assays that are fast, broad, and can characterize diverse chemical classes with a single setup
ETAK
ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.
Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform
Arbon
Energy & Power
Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization
Carbon To Stone
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
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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.