Skip to main content
Back to Investors

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
Ecospears2024Series Unknown$2.0MAltamonte Springs
Scalvy2024Non Equity AssistanceUndisclosedAustin
Solarflux Energy Technologies2024Non Equity AssistanceUndisclosedReading
Electric Air2024Non Equity AssistanceUndisclosedSan Francisco
Climative2024Non Equity AssistanceUndisclosedFredericton
Relyion Energy2023Seed$4.4MSanta Clara
OXbyEL Technologies2023Grant$150KPhoenix
Innovasion Labs PINC2023Seed$2.0MSan Diego
Inergy Technology2023Equity Crowdfunding$728KOrem
EV Life2023Debt Financing$8.0MFolsom

Complete List of Cleantech Open Portfolio Companies (147)

Export
#CompanyStageAmountLocation
76EcospearsSeries Unknown$2.0MAltamonte Springs, United States
77ScalvyNon Equity AssistanceUndisclosedAustin, United States
78Solarflux Energy TechnologiesNon Equity AssistanceUndisclosedReading, United States
79Electric AirNon Equity AssistanceUndisclosedSan Francisco, United States
80ClimativeNon Equity AssistanceUndisclosedFredericton, Canada
81Relyion EnergySeed$4.4MSanta Clara, United States
82OXbyEL TechnologiesGrant$150KPhoenix, United States
83Innovasion Labs PINCSeed$2.0MSan Diego, United States
84Inergy TechnologyEquity Crowdfunding$728KOrem, United States
85EV LifeDebt Financing$8.0MFolsom, United States
CleanTechEnvironmental Consulting

ecoSPEARS is a cleantech remediation company that is ushering in the carbonless future of environmental cleanup.

Altamonte Springs, United States
February 2024
$2.0M
Series Unknown

Founder Contacts

19,000+ verified contacts

Data CenterElectronic Design Automation (EDA)Energy StorageIndustrialTransportation

Scalvy is a modular power electronics company delivering ultra-high, grid-interactive power for data centers, energy storage, and EVs.

Austin, United States
January 2024
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

Clean EnergyCleanTechEnergyRenewable EnergySolar

Solarflux provides a flexible, clean, inexpensive solar thermal power for a wide range of use cases

Reading, United States
January 2024
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

Consumer ElectronicsElectronicsSmart Home

Electric Air is a technology enabled contractor that provides electric heating and cooling pumps and their installation services.

San Francisco, United States
January 2024
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)BlockchainCleanTechEnergy EfficiencyInformation TechnologyMachine LearningSoftware

Reinventing how organizations collaborate with building owners to expedite the decarbonization of the built environment

Fredericton, Canada
January 2024
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

EnergyManufacturingRenewable Energy

Relyion Energy Renewable Energy Equipment Manufacturing firm that makes sustainable Li-ion batteries.

Santa Clara, United States
December 2023
$4.4M
Seed

Founder Contacts

19,000+ verified contacts

EnergyWater

OXbyEL Technologies is providing technical leadership in the development of a new, destructive PFAS water treatment process.

Phoenix, United States
December 2023
$150K
Grant

Founder Contacts

19,000+ verified contacts

BatteryManufacturingService Industry

Innovasion Labs PINC creates lithium-ion battery technology prototypes in a laboratory setting employing concept testing.

San Diego, United States
December 2023
$2.0M
Seed

Founder Contacts

19,000+ verified contacts

EnergyRenewable Energy

The leader in portable, consumer energy storage solutions.

Orem, United States
November 2023
$728K
Equity Crowdfunding

Founder Contacts

19,000+ verified contacts

AutomotiveElectric VehicleFinance

EV Life helps drivers with rebates, incentives, and financing of an electric car that saves them money and the planet.

Folsom, United States
October 2023
$8.0M
Debt Financing

Founder Contacts

19,000+ verified contacts

LogisticsRailroadTransportation

Ekostinger provides an advanced trailer aerodynamics solution for the trucking industry.

Ithaca, United States
October 2023
$2.1M
Series Unknown

Founder Contacts

19,000+ verified contacts

Charging InfrastructureGreenTechPublic TransportationRenewable EnergySharing Economy

re:Charge is powering the global shift towards a sustainable future through our innovative charging-as-a-service business model.

Albany, United States
September 2023
$350K
Seed

Founder Contacts

19,000+ verified contacts

EnergyEnergy ManagementEnergy StorageRenewable EnergySoftwareSolar

Electriq Power is a provider of smart home battery storage solution for homes and small businesses.

San Leandro, United States
August 2023
$45.0M
Post Ipo Equity

Founder Contacts

19,000+ verified contacts

WaterWater Purification

Onvector develops non-chemical water treatment technologies that utilizes plasma.

Somerville, United States
July 2023
$2.5M
Seed

Founder Contacts

19,000+ verified contacts

BiotechnologyLogisticsSupply Chain ManagementWaste Management

Polycarbin is a sustainable lab products from in-house recycled plastics, reducing carbon emissions in the scientific supply chain.

El Sobrante, United States
July 2023
$4.2M
Seed

Founder Contacts

19,000+ verified contacts

ComputerEnergyRenewable Energy

Apis Innovation develops IoT technology that enables landfills to harvest more renewable energy from decomposing waste.

Easton, United States
June 2023
$4.5M
Series Unknown

Founder Contacts

19,000+ verified contacts

Biomass EnergyCleanTechEnvironmental EngineeringOrganic

Hago Energetics is a thermochemical capture and conversion of agricultural waste, animal waste, and carbon dioxide into useful products.

Thousand Oaks, United States
June 2023
Grant

Founder Contacts

19,000+ verified contacts

CleanTechEnergyHydroelectricWater

GenH develops a new advanced generation of hydro technologies deployable within cities and towns.

Boston, United States
June 2023
Grant

Founder Contacts

19,000+ verified contacts

AgTechEnvironmental EngineeringManufacturingMining TechnologyWater

Kairospace Technologies is a strategic innovation hub that optimizes industrial water processes by leveraging cutting edge technologies.

Las Vegas, United States
June 2023
Seed

Founder Contacts

19,000+ verified contacts

ManufacturingRenewable EnergyTransportationWaste Management

Optimus Technologies is the market leader in EPA compliant biodiesel conversion systems for medium- and heavy-duty trucks.

Pittsburgh, United States
April 2023
$17.8M
Series A

Founder Contacts

19,000+ verified contacts

Consumer ApplicationsEnergy Efficiency

Enersion is a researcher and developer of cooling, heating, and electricity products.

Toronto, Canada
February 2023
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

EnergyLighting

Allumia funds, designs, install and maintain a lighting upgrade for commercial and industrial customers.

Seattle, United States
February 2023
Convertible Note

Founder Contacts

19,000+ verified contacts

CleanTechConstructionEnergy EfficiencyEnergy ManagementGreen BuildingGreenTechHeatingVentilationand Air Conditioning (HVAC)Smart Building

We democratize Facility Management for Priority Populations.

Portland, United States
January 2023
Non Equity Assistance

Founder Contacts

19,000+ verified contacts

CleanTechEnergy EfficiencyHardware

Hyper-efficient Air-Conditioning Hardware Company

Reno, United States
December 2022
$385K
Convertible Note

Founder Contacts

19,000+ verified contacts

BatteryElectronicsEnergyEnergy StorageRenewable EnergySolarSustainabilityWaste Management

RePurpose Energy reuses electric vehicle batteries to create lower-cost, more sustainable "second life" solar energy storage systems.

Fairfield, United States
November 2022
$6.0M
Grant

Founder Contacts

19,000+ verified contacts

Showing 76-100 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, Renewable Energy, CleanTech, Energy Efficiency, Manufacturing. The firm invests across 55 different industry categories.

What is Cleantech Open's largest investment?

Among tracked funding rounds, Electriq Power received $45.0M in a Post Ipo Equity 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 Ecospears, Scalvy, Solarflux Energy Technologies, Electric Air, Climative. These companies were founded in 2020 or later.

Explore Other Top Investors

Discover portfolio companies of other leading venture capital firms and investors.

View All Investors