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Cleantech Open Portfolio Companies

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

Last updated: June 2026

Cleantech Open Investment Overview

Portfolio Companies
147
Total Invested
$435.1M
Average Investment
$4.4M

Cleantech Open's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
Sinovia Technologies2020Grant$1.2MSan Carlos
Medley Thermal2020Non Equity Assistance$15KSomerville
Terrafuse2020Grant$750KBerkeley
Power HV2020Seed$1.0MSt. John's

Complete List of Cleantech Open Portfolio Companies (147)

Export
#CompanyStageAmountLocation
126Sinovia TechnologiesGrant$1.2MSan Carlos, United States
127Medley ThermalNon Equity Assistance$15KSomerville, United States
128TerrafuseGrant$750KBerkeley, United States
129Power HVSeed$1.0MSt. John's, Canada
130HyperBoreanPre-Seed$2.1MWichita, United States
131SourcewaterSeries A$7.2MHouston, United States
132GeoOrbitalEquity Crowdfunding$395KCambridge, United States
133Saratoga EnergyPre-Seed$150KBerkeley, United States
134AlinaNon Equity AssistanceUndisclosedRiga, Latvia
135SpringpowerNon Equity AssistanceUndisclosedMississauga, Canada
ManufacturingRenewable EnergySemiconductor

Sinovia Technologies manufactures flexible printed OLED displays.

San Carlos, United States
August 2020
$1.2M
Grant

Founder Contacts

19,000+ verified contacts

ComputerEnergyEnergy ManagementSoftware

Medley Thermal develops software for switching management between the energy sources optimally without disruption to the supply of steam.

Somerville, United States
July 2020
$15K
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Environmental ConsultingInformation Technology

Terrafuse builds AI technology to deliver actionable climate intelligence on the planet.

Berkeley, United States
April 2020
$750K
Grant

Founder Contacts

19,000+ verified contacts

Energy EfficiencyEnergy ManagementEnvironmental EngineeringGreenTech

Power HV is creating ground-breaking technology, decreasing greenhouse gas emissions and increase efficiency.

St. John's, Canada
February 2020
$1.0M
Seed

Founder Contacts

19,000+ verified contacts

AutomotiveCleanTechElectronicsHardwareHeatingVentilationand Air Conditioning (HVAC)Manufacturing

Hyperborean is a provider of clean technology solutions that uses waste heat to power refrigeration and air conditioning loops.

Wichita, United States
December 2019
$2.1M
Pre-Seed

Founder Contacts

19,000+ verified contacts

EnergyOil and GasWater

Sourcewater offers the largest online water source, reuse, and disposal database in the upstream energy industry.

Houston, United States
September 2019
$7.2M
Series A

Founder Contacts

19,000+ verified contacts

ElectronicsGreen Consumer Goods

Electric wheel - turns any vehicle into an electric vehicle in seconds.

Cambridge, United States
May 2019
$395K
Equity Crowdfunding

Founder Contacts

19,000+ verified contacts

AutomotiveChemicalElectronicsEnergyManufacturingRenewable Energy

Developing an inexpensive production process

Berkeley, United States
March 2019
$150K
Pre-Seed

Founder Contacts

19,000+ verified contacts

Building MaterialChemicalCleanTechCosmeticsGreen BuildingPaper Manufacturing

Alina is an environment tech company that develops technology for product sustainable preservation.

Riga, Latvia
January 2019
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

BatteryElectronicsManufacturing

Springpower is a manufacturing company providing clean cathode material to battery manufacturers.

Mississauga, Canada
January 2019
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

IndustrialWind Energy

Aquanis aims to reduce the cost of wind energy by improving the aerodynamic performance of wind turbines.

North Kingstown, United States
November 2018
$3.5M
Grant

Founder Contacts

19,000+ verified contacts

ManufacturingProduct DesignSemiconductorSolar

Tessolar has design innovation to improve solar photovoltaic system performance and reduce installed system costs.

Woburn, United States
September 2018
$1.3M
Series Unknown

Founder Contacts

19,000+ verified contacts

AgricultureAgTechRoboticsSoftware

WaterBit’s automated irrigation solution empowers growers to remotely monitor and control precision irrigation to their crops.

San Jose, United States
June 2018
$11.4M
Series A

Founder Contacts

19,000+ verified contacts

EnergyMarketplaceReal EstateSolar

SolarKal is the largest B2B solar energy marketplace in the US, connecting organizations to solar providers who compete for their business.

New York, United States
May 2018
$500K
Grant

Founder Contacts

19,000+ verified contacts

EnergyPower Grid

TouchLight is a provider of carbon neutrality and grid edge solutions.

Brooklyn, United States
March 2018
$330K
Pre-Seed

Founder Contacts

19,000+ verified contacts

AgricultureCleanTechMining TechnologyNatural ResourcesRecyclingRenewable EnergyWaste ManagementWater

NRU provides services that complete the circular economy of nutrients in wastewater treatment.

Madison, United States
March 2017
$900K
Seed

Founder Contacts

19,000+ verified contacts

AutomotiveElectric VehicleEnergy Management

TEQ Charging increases affordability and accessibility of electric vehicle charging.

Atlanta, United States
January 2017
Seed

Founder Contacts

19,000+ verified contacts

IndustrialIndustrial ManufacturingNanotechnology

Nano Hydrophobics offers industrial coatings services.

San Jose, United States
September 2016
$910K
Grant

Founder Contacts

19,000+ verified contacts

BiotechnologyChemicalChemical Engineering

VariFAS Biorenewables produces bio-based chemicals for the chemical industry.

Ames, United States
April 2016
$809K
Grant

Founder Contacts

19,000+ verified contacts

SaaS

A SaaS platform for optimizing fuel portfolios.

Roseville, United States
January 2016
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

AnalyticsFinancial ServicesFinTechInformation TechnologySoftware

EverVest provides financial risk analysis and cash flow modeling software to renewable energy investors.

Cambridge, United States
October 2015
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

EnergySmart BuildingSolar

Sun Number offers a technology-based scoring system that enables residents and office buildings to determine their solar potential.

Boulder, United States
July 2015
$50K
Convertible Note

Founder Contacts

19,000+ verified contacts

Showing 126-147 of 147 portfolio companies

Frequently Asked Questions About Cleantech Open

How many companies has Cleantech Open invested in?

Cleantech Open has invested in 147 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Cleantech Open invest in?

Cleantech Open's top investment sectors include Energy, Manufacturing, Electronics, Renewable Energy, Energy Management. The firm invests across 53 different industry categories.

What is Cleantech Open's largest investment?

Among tracked funding rounds, WaterBit received $11.4M in a Series A round. Cleantech Open's total known invested capital is $435.1M.

What is the average investment size for Cleantech Open?

Cleantech Open's average investment size is $4.4M across its portfolio of 147 companies.

What are Cleantech Open's most recent investments?

Recent Cleantech Open portfolio additions include Sinovia Technologies, Medley Thermal, Terrafuse, Power HV. These companies were founded in 2020 or later.

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Cleantech Open Portfolio: 147 Companies & Co-Investors (2026) | VCBacked