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US Department of Energy Portfolio Companies

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

Last updated: July 2026

US Department of Energy Investment Overview

Portfolio Companies
343
Total Invested
$17.3B
Average Investment
$74.7M

US Department of Energy's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
AirCapture2026GrantUndisclosedBerkeley
ION Storage Systems2026Venture - Series UnknownUndisclosedBeltsville
Trillium Renewable Chemicals2026Series BUndisclosedKnoxville
Celadyne Technologies2026Venture - Series Unknown$4.5MChicago
Focused Energy2026Series AUndisclosedDarmstadt
Terra CO2 Technologies2026Venture - Series Unknown$82.0MGolden
Zymochem2026GrantUndisclosedSan Leandro
Anthro Energy2026GrantUndisclosedSan Jose
Daphne Technology2026Venture - Series UnknownUndisclosedSaint-sulpice
Via Separations2026Venture - Series UnknownUndisclosedWatertown

Complete List of US Department of Energy Portfolio Companies (343)

Export
#CompanyStageAmountLocation
1AirCaptureGrantUndisclosedBerkeley, United States
2ION Storage SystemsVenture - Series UnknownUndisclosedBeltsville, United States
3Trillium Renewable ChemicalsSeries BUndisclosedKnoxville, United States
4Celadyne TechnologiesVenture - Series Unknown$4.5MChicago, United States
5Focused EnergySeries AUndisclosedDarmstadt, Germany
6Terra CO2 TechnologiesVenture - Series Unknown$82.0MGolden, United States
7ZymochemGrantUndisclosedSan Leandro, United States
8Anthro EnergyGrantUndisclosedSan Jose, United States
9Daphne TechnologyVenture - Series UnknownUndisclosedSaint-sulpice, Switzerland
10Via SeparationsVenture - Series UnknownUndisclosedWatertown, United States
Carbon CaptureEnergySustainability

AirCapture develops an on site and modular direct air capture technology.

Berkeley, United States
June 2026
Grant

Founder Contacts

19,000+ verified contacts

AerospaceBatteryConsumer ElectronicsElectric VehicleElectronicsEnergyEnergy StorageManufacturingMedical DeviceMilitary

ION Storage Systems is an energy startup developing Solid State Lithium Metal Batteries.

Beltsville, United States
June 2026
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

ChemicalChemical EngineeringIndustrial ManufacturingManufacturing

Trillium Renewable Chemicals manufactures chemicals from renewable feedstocks used in a variety of industrially important applications.

Knoxville, United States
May 2026
Series B

Founder Contacts

19,000+ verified contacts

ChemicalEnergy StorageFuel CellIndustrial

Celadyne Technologies develops membranes for use in electrolyzers and fuel cells that require minimal heat and water management.

Chicago, United States
May 2026
$4.5M
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

Clean EnergyEnergyRenewable Energy

Focused Energy is a fusion energy company developing laser-driven inertial fusion systems for commercial power generation.

Darmstadt, Germany
May 2026
Series A

Founder Contacts

19,000+ verified contacts

Building MaterialCleanTechConstructionIndustrial Engineering

Terra CO2 Technologies specializes in the production of low-carbon alternatives for cement replacement.

Golden, United States
May 2026
$82.0M
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

BiotechnologyChemicalIndustrialManufacturing

Zymochem provides a carbon-efficient bio-manufacturing platform that converts renewable feedstocks into bio-based materials.

San Leandro, United States
May 2026
Grant

Founder Contacts

19,000+ verified contacts

BatteryCleanTechEnergy StorageManufacturingRenewable Energy

Anthro Energy is a battery technology company that uses polymer electrolytes to improve the safety and adaptability of lithium-ion cells.

San Jose, United States
April 2026
Grant

Founder Contacts

19,000+ verified contacts

Clean EnergyCleanTechMarine TransportationNanotechnologyPower GridShipping

Daphne Technology is a developer of a sustainable, technically advanced and cost efficient air emissions control system.

Saint-sulpice, Switzerland
April 2026
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

Advanced MaterialsCleanTechEnergy EfficiencyIndustrialProduct Research

Via Separations is a technology company that develops membrane materials for modular and resource separation solutions.

Watertown, United States
April 2026
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

HeatingVentilationand Air Conditioning (HVAC)ManufacturingSustainability

Helix Earth is applying our NASA-born technology to improve commercial products and processes financially and for the benefit of humankind.

Houston, United States
March 2026
$12.0M
Seed

Founder Contacts

19,000+ verified contacts

AerospaceBiomass EnergyClean EnergyHardwareRenewable Energy

Arbor Energy is a clean power company that creates compact systems to generate clean, dependable electricity with zero emissions.

Los Angeles, United States
October 2025
$55.0M
Series A

Founder Contacts

19,000+ verified contacts

BiopharmaBiotechnologyLife Science

Lumen Bio discovers, develops, and manufactures biologic drugs and vaccine candidates for various diseases.

Seattle, United States
October 2025
$30.0M
Series C

Founder Contacts

19,000+ verified contacts

ChemicalRenewable Energy

RenewCO2 is a research company that develops processes for converting CO2 into polymers and chemicals.

Cranford, United States
August 2025
$4.2M
Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Data CenterManufacturingPower GridPredictive AnalyticsSensor

AIoT Predictive Monitoring for Power Infrastructure

Stanford, United States
August 2025
$1.5M
Pre-Seed

Founder Contacts

19,000+ verified contacts

Clean EnergyCleanTechEnergyGeothermal EnergyNuclearRenewable Energy

Terrestrial Energy is a developer of a reactor power plant technology to provide carbon-free energy for the global industry.

Oakville, Canada
July 2025
$25.8M
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

BiotechnologyInformation TechnologyWaste ManagementWater

Gross-Wen Technologies is a biotechnology company that specializes in the fields of water quality, wastewater, and water nitrogen.

Slater, United States
June 2025
$1.0M
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

EnergyEnergy EfficiencyIndustrial

Realta Fusion develops fusion energy technology for the production of industrial heat and power.

Madison, United States
May 2025
$36.0M
Series A

Founder Contacts

19,000+ verified contacts

Industrial AutomationInnovation ManagementManufacturingRobotics

Molg specializes in circular manufacturing, utilizing robotics to autonomously disassemble complex electronic products.

Sterling, United States
May 2025
$4.5M
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

B2BConsultingManufacturing

Queens Carbon is working on a processing system that will dramatically cut energy use.

Pine Brook, United States
April 2025
$10.0M
Seed

Founder Contacts

19,000+ verified contacts

BiotechnologyEnvironmental EngineeringManufacturingWood Processing

InventWood develops cellulose-based materials for environmental.

College Park, United States
April 2025
$15.0M
Series A

Founder Contacts

19,000+ verified contacts

Precious MetalsRecyclingSolar

Recycler focused on solar-PV systems.

Jacksonville, United States
April 2025
$7.0M
Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)EnergyInternet of ThingsSoftware

Equiwatt is a digital platform enabling households to get paid for saving energy at peak times.

Newcastle Upon Tyne, United Kingdom
April 2025
$922K
Venture - Series Unknown

Founder Contacts

19,000+ verified contacts

BatteryManufacturingRenewable Energy

Mitra Chem is a lithium-ion battery material manufacturing company that innovates and commercializes iron-based cathode materials.

Mountain View, United States
March 2025
$15.6M
Series B

Founder Contacts

19,000+ verified contacts

Carbon CaptureClean EnergyCleanTechGreenTech

Capture6 is a direct air capture start-up leveraging its technology to support climate resilience and industrial decarbonization.

Berkeley, United States
March 2025
$27.5M
Series A

Founder Contacts

19,000+ verified contacts

Showing 1-25 of 343 portfolio companies

Frequently Asked Questions About US Department of Energy

How many companies has US Department of Energy invested in?

US Department of Energy has invested in 343 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does US Department of Energy invest in?

US Department of Energy's top investment sectors include Manufacturing, Energy, Renewable Energy, CleanTech, Clean Energy. The firm invests across 60 different industry categories.

What is US Department of Energy's largest investment?

Among tracked funding rounds, Terra CO2 Technologies received $82.0M in a Venture - Series Unknown round. US Department of Energy's total known invested capital is $17.3B.

What is the average investment size for US Department of Energy?

US Department of Energy's average investment size is $74.7M across its portfolio of 343 companies.

What are US Department of Energy's most recent investments?

Recent US Department of Energy portfolio additions include AirCapture, ION Storage Systems, Trillium Renewable Chemicals, Celadyne Technologies, Focused Energy. These companies were founded in 2020 or later.

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