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US Department of Energy's Clean Energy Portfolio

Browse 30 Clean Energy companies funded by US Department of Energy. See funding amounts, founder contacts, and investment details.

Clean Energy Companies
30
Total Funding in Clean Energy
$1.5B

Clean Energy Portfolio Companies (30)

Export
Clean EnergyCleanTechEnergyNuclearRenewable Energy

Zap Energy is developing compact fusion power that doesn't require magnets or lasers.

Everett, United States
September 2024
$130.0M
Series D

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergy

Sunwealth Power is a renewable energy investment firm that manages and finances solar and storage installations.

Cambridge, United States
September 2025
$20.0M
Debt Financing

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergyRenewable EnergySolar

Sunnova is an Energy as a Service (EaaS) company that offers residential solar power and energy storage solutions.

Houston, United States
September 2023
$400.0M
Post-IPO Debt

Founder Contacts

30,000+ verified contacts

Advanced MaterialsBatteryClean EnergyEnergy StorageNanotechnology

SVX is future-proofing manufacturing of cathode active materials for lithium-ion batteries in electric vehicles and energy storage systems.

San Francisco, United States
September 2022
$8.4M
Series A

Founder Contacts

30,000+ verified contacts

AnalyticsClean EnergyEnergyInsurTechRenewable EnergySolar

kWh Analytics provides climate insurance and portfolio analytics for the solar industry.

Beaverton, United States
September 2024
$2.4M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnergy EfficiencyEnergy StorageEnvironmental EngineeringRenewable Energy

ICE Thermal Harvesting focuses on supplying zero-emission power in various regions around the world.

Houston, United States
August 2023
$150.0M
Debt Financing

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnergy StorageOil and Gas

Power to Hydrogen develops advanced AEM electrolyzers that integrate with renewables while eliminating precious, expensive metals.

Columbus, United States
August 2024
$18.0M
Series A

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergyRenewable EnergySolar

Smarter Solar Deployment—From Planning to Power

Oakland, United States
July 2025
$12.0M
Series A

Founder Contacts

30,000+ verified contacts

Clean EnergyFuel CellRenewable Energy

Pacific Northwest Hydrogen Association aims to enhance lives by establishing a clean hydrogen ecosystem throughout the Pacific Northwest.

Seattle, United States
July 2024
$27.5M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechManufacturing

NOVONIX is a developer and supplier of high-performance materials and technologies for the global lithium-ion battery industry.

Bedford, Canada
June 2026
$14.6M
Post-IPO Equity

Founder Contacts

30,000+ 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
$240.0M
Series A

Founder Contacts

30,000+ verified contacts

Clean EnergyManufacturingSemiconductor

Optigon offers materials scientists and manufacturers solutions to help speed the development and deployment of clean energy materials.

Somerville, United States
May 2025
$100K
Grant

Founder Contacts

30,000+ 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
$19.2M
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnergyEnergy EfficiencyIndustrialRenewable EnergySustainability

Skyven Technologies is an energy-as-a-service company with a mission to decarbonize industrial process heat.

Farmers Branch, United States
March 2024
$145.0M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnergy

OxEon Energy is a cleantech start-up that works on alternative energy storage, synthetic fuels, and high purity gas production.

North Salt Lake, United States
March 2024
$36.3M
Grant

Founder Contacts

30,000+ 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

30,000+ 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

30,000+ 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

30,000+ verified contacts

Advanced MaterialsClean EnergyConsumer ElectronicsElectric VehicleElectronicsEnergy EfficiencyMedical DeviceWireless

Resonant Link delivers the world's fastest and easiest to use wireless charging for medical devices, consumer electronics, and EVs.

South Burlington, United States
January 2025
$3.4M
Series A

Founder Contacts

30,000+ verified contacts

Advanced MaterialsBatteryChemicalClean EnergyElectronicsFuel CellInformation TechnologyRenewable EnergyWaterWater Purification

Ionomr makes Aemion‚Ñ¢ & Pemion‚Ñ¢, next-gen ion-exchange materials for breakthrough clean technology applications involving electrochemistry.

Vancouver, Canada
October 2024
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

Clean EnergyConsumer ElectronicsElectronics

Gradient's mission is to cool the world by transforming every home to be more comfortable and healthy for the people who inhabit it.

San Francisco, United States
February 2024
$9.5M
Series A

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnvironmental Engineering

Novoreach Technologies develops innovative material solutions for clean energy and environment applications.

Midland, United States
January 2022
$200K
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyGreenTechHydroelectricManufacturingRenewable Energy

Littoral Power Systems designs, manufactures, and installs distributed power systems.

New Bedford, United States
January 2022
$4.0M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyCleanTechEnergyPower Grid

Creating innovative generator solutions that enable clean, flexible, and affordable electricity production.

Cedar Park, United States
December 2024
$6.0M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyRenewable EnergyWind Energy

Triton Anchor offers a new level of anchoring for floating renewable energy solutions.

Chelmsford, United States
December 2024
$3.5M
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyConstructionEnergy StorageRenewable Energy

Sperra provides concrete solutions for renewable energy.

Boulder, United States
December 2025
Grant

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergyMiningMining TechnologyRenewable Energy

Eden is the leader in natural resource recovery. They break rocks with electricity to increase subsurface permeability.

Somerville, United States
January 2025
Non-equity Assistance

Founder Contacts

30,000+ verified contacts

Big DataClean EnergyCleanTechCreditEnergy EfficiencyFinTechInsuranceRenewable EnergyRisk ManagementSoftware

Energetic Capital provides renewable energy financing services for commercial and industrial projects.

Boston, United States
October 2024
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergyEnergy EfficiencyHome ServicesRenewable Energy

Zero Homes is a technology company that develops an end-to-end digital platform that supports homeowners and contractors.

Denver, United States
February 2026
$16.9M
Series A

Founder Contacts

30,000+ verified contacts

Clean EnergyEnergyNuclear

Stellarator technology to transform energy markets with fusion power.

Oak Ridge, United States
January 2026
$87.0M
Convertible Note

Founder Contacts

30,000+ verified contacts

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