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Greentown Labs — Portfolio, Page 2

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

44
Companies
$95.8M
Total invested
$2.7M
Avg. check
53
Industries
Manufacturing 5Energy 5Renewable Energy 4Sustainability 3Heating 2Ventilation 2+47 more
Founder contacts

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Portfolio companies

Showing 2544 of 44
Active Surfaces
October 2025

Active Surfaces offers ultra-thin-film solar technology that can be applied to any surface.

Manufacturing · WoburnCorporate Round
BlueShift
August 2025

BlueShift operates as an electrochemical climate tech innovator.

Assistive Technology · Cambridge$75K Grant
Trellis Air
March 2025

Trellis Air is making commercially viable membrane-based dehumidifiers.

Heating · Somerville$6.6M Seed
AtmoSpark
March 2025

AtmoSpark slashes building energy costs with breakthrough moisture capture technology

Advanced Materials · Houston$300K Pre-Seed
Thola Inc
February 2025

Making adoption of climate sustainable practices profitable for SMEs

Big Data · San Francisco$25K Grant
studio 3e8
December 2024

Studio 3E8 offers an innovative platform that enhances accessibility to metal 3D printing and reduces costs significantly.

3D Printing · CambridgeNon Equity Assistance
Sweetch Energy
December 2024

Sweetch Energy is created to leverage most recent academic discoveries in nanotechnologies and materials in the blue osmotic energy field.

Energy · RennesNon Equity Assistance
Hempitecture
November 2024

Hempitecture develops sustainable materials, equipment, and systems for constructing buildings.

Building Material · Ketchum$8.4M Grant
Applied Bioplastics
September 2024

Applied Bioplastics manufactures bioplastics in retail, packaging, and medical industries to improve plastic recycling.

Agriculture · AustinConvertible Note
Topl
April 2024

Topl is an impact technology economy that enables digital and sustainable transformation across value chains.

Blockchain · Houston$1.3M Series Unknown
Cemvita
February 2024

Cemvita uses synthetic biology to develop solutions inspired by nature, aiming to facilitate the transition towards sustainable energy.

Biotechnology · Houston$6.5M Series Unknown
Syzygy Plasmonics
February 2024

Syzygy Plasmonics is a developer of a photocatalytic reactor designed for fuel cell vehicles and small-scale industrial applications.

Chemical · HoustonSeries Unknown
ZS2 Technologies
January 2024

ZS2 Technologies creates and produces its own line of advanced building technologies, including as prefabricated structural panels.

Building Material · CalgaryNon Equity Assistance
Lobster Robotics
December 2023

Lobster Robotics provides lightweight, low-cost, quick visual surveying robots to reduce surveying costs in offshore wind farms.

Transportation · Delft$378K Seed
Dioxycle
July 2023

Dioxycle is develop electrolyser solutions for carbon dioxide emissions.

Environmental Engineering · Bordeaux$17.0M Series A
Varea Energy
July 2023

Decarbonizing the Heavy Industry and Electricity Space by Pioneering Hydrogen as a Sustainable Alternative.

CleanTech · Houston$500K Pre-Seed
Veloce Energy
April 2023

Veloce Energy innovates technology and financing models to reduce physical and financial barriers to EV Charging infrastructure deployment.

Charging Infrastructure · Los AngelesSeries A
Revterra
October 2022

Revterra is a developer of flywheel energy storage systems.

Energy Management · Houston$20K Grant
REVOLUTION Turbine Technologies
April 2022

Clean energy, waste energy recovery

Energy · Houston$8K Grant
ALLY Energy
April 2021

ALLY Energy is an AI enabled talent marketplace for energy and climate.

CleanTech · HoustonNon Equity Assistance

Where Greentown Labs invests

Manufacturing5
Energy5
Renewable Energy4
Sustainability3
Heating2
Ventilation2

About Greentown Labs's portfolio

How many companies has Greentown Labs invested in?

Greentown Labs has invested in 44 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Greentown Labs invest in?

Greentown Labs's top investment sectors include Manufacturing, Energy, Renewable Energy, Sustainability, Heating. The firm invests across 53 different industry categories.

What is Greentown Labs's largest investment?

Among tracked funding rounds, Dioxycle received $17.0M in a Series A round. Greentown Labs's total known invested capital is $95.8M.

What is the average investment size for Greentown Labs?

Greentown Labs's average investment size is $2.7M across its portfolio of 44 companies.

What are Greentown Labs's most recent investments?

Recent Greentown Labs portfolio additions include Active Surfaces, BlueShift, Trellis Air, AtmoSpark, Thola Inc. These companies were founded in 2020 or later.

Reach the founders behind these 44 companies
Verified emails and LinkedIn profiles, updated monthly.
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