Energy

Aalo AtomicsAustin

Nuclear·Energy

Factory-built nuclear power plants for data centers

AM BatteriesBoston

Energy·Manufacturing

Dry-electrode manufacturing for battery cells

Ambrosia EnergyHouston

Energy

Solar and battery power plants for round-the-clock power

American Lithium EnergyVista

Energy·Defense

Silicon-anode lithium cells for defense and space

AmpaireLong Beach

Aerospace·Energy

Hybrid-electric propulsion systems for regional aircraft

AmperaPalm Beach Gardens

Nuclear·Energy

Factory-built nuclear microreactors

Amprius TechnologiesFremont

Energy·Electronics·Drones

Silicon-anode battery cells for drones and aircraft

AntaresRedondo Beach

Nuclear·Energy

Factory-built fission microreactors for defense and space

Antora EnergySan Francisco Bay Area

Energy·Manufacturing

Thermal batteries that supply industrial heat and power

Apollo AtomicsCambridge

Nuclear·Energy

Compact pressurized water reactors built in a factory

Applied AtomicsNew Orleans

Nuclear·Energy

Builds and operates modular nuclear fission plants on site

ApteraCarlsbad

Mobility·Energy

Three-wheeled solar electric vehicles

AquacyclEscondido

Energy·Manufacturing

Modular systems that treat industrial wastewater

ArinnaPalo Alto

Energy·Space

Lightweight solar power systems for space infrastructure

Avalanche EnergySeattle

Nuclear·Energy

Compact fusion machines for power and radiation sources

AvnosLos Angeles

Energy

Systems that turn waste heat into water and carbon removal

Base PowerAustin

Energy

Home batteries paired with retail electricity in Texas

Bedrock EnergyAustin

Energy·Construction

Geothermal wells for building heating and cooling

BETA TechnologiesBurlington

Aerospace·Energy·Mobility

Electric aircraft and the chargers that power them

Beyond ReachBrooklyn

Space·Energy

Deployable solar arrays for spacecraft power

Bloom EnergySan Jose

Energy

Solid oxide fuel cells for onsite power

Blue EnergyChevy Chase

Nuclear·Energy

Nuclear power plants built with assembly-line methods

Bluecore EnergyLong Beach

Nuclear·Energy·Maritime

Barge-mounted 10 MWe floating nuclear reactor

Boston MetalWoburn

Materials·Energy·Manufacturing

Molten oxide electrolysis for steel and critical metals

BrimstoneOakland

Materials·Energy·Construction

A process that makes cement and metals from a single rock

Carbon CaptureLos Angeles

Energy

Direct air capture systems that remove CO2 from the air

Charge RoboticsSan Leandro

Robotics·Energy

Automated field factories that build utility-scale solar

Chariot DefenseSan Bruno

Energy·Defense·Electronics

Hybrid-electric power systems for battlefield equipment

Clairity TechnologyLos Angeles

Energy

Direct air capture systems for removing CO2

Commonwealth Fusion SystemsDevens

Nuclear·Energy

Tokamak fusion power plants and superconducting magnets

CoronalLong Beach

Energy

Cosmic RoboticsSan Francisco

Robotics·Construction·Energy

Robotic equipment for building solar farms and data centers

Cowboy SpaceSan Carlos

Space·Aerospace·Energy

Solar-powered GPU data centers in low Earth orbit

Critical EnergyHawthorne

Energy

Modular power plants for geothermal and waste heat

Critical LoopLong Beach

Energy·Software

Behind-the-meter batteries and controls for industrial power

CrusoeDenver

Energy·AI·Manufacturing

Builds and operates AI data centers and cloud computing

Deep FissionBerkeley

Nuclear·Energy

Small reactors placed a mile underground in boreholes

Deployable EnergyHouston

Nuclear·Energy

Transportable 1 MW microreactors for industry and defense

Dimensional EnergyIthaca

Energy·Materials

Catalysts that turn syngas into low-carbon fuels

Electric GoddessEl Segundo

Energy

Battery testing and failure forensics lab

Electric HydrogenDevens

Energy·Manufacturing

Industrial-scale PEM electrolyzer plants for green hydrogen

ElectroflowSan Francisco Bay Area

Mining·Materials·Energy

Electrochemical lithium extraction from low-grade brines

Emerald AIWashington DC

Energy·AI·Software

Software that makes AI data center power use grid-flexible

Endurance EnergySeattle

Energy·Maritime

Subsea geothermal power on the seafloor

EpirusTorrance

Defense·Energy

High-power microwave systems that defeat drone swarms

EquaticSanta Monica

Energy·Materials

Seawater electrolysis for carbon removal and hydrogen

EVgoLos Angeles

Energy·Mobility

Public fast charging network for electric vehicles

ExowattMiami

Energy

Stores solar energy as heat for round-the-clock power

Fervo EnergyHouston

Energy

Enhanced geothermal power plants

FieldpackLos Angeles

Energy·Electronics

First American NuclearCarmel

Nuclear·Energy

Advanced nuclear reactors for grid power

First Order EffectsAustin

Electronics·Energy·Defense

Field power systems for drones, robots and ships

FluxCoAustin

Energy·Software

Transformer sourcing marketplace for power equipment buyers

Form EnergySomerville

Energy·Manufacturing

Iron-air batteries for multi-day grid energy storage

Group14 TechnologiesWoodinville

Energy·Materials

Silicon-carbon anode materials for lithium-ion batteries

H3X TechnologiesLouisville

Energy·Manufacturing·Aerospace

Lightweight electric motors for aircraft and defense

Helicity SpacePasadena

Energy·Space

Fusion propulsion and power for in-space travel

HelionEverett

Nuclear·Energy

Magnetic fusion power plants

Heron PowerScotts Valley

Electronics·Energy

Solid-state transformers for data centers and solar

Hertha MetalsConroe

Materials·Energy·Manufacturing

Makes steel with a coal-free pyrometallurgical process

Heven AeroTechSterling

Drones·Defense·Energy

Hydrogen-powered long-endurance drones

HgenHawthorne

Energy

Electrolyzers producing hydrogen for heavy industry

Indigo AgBoston

Biotech·Energy

InertiaLivermore

Nuclear·Energy

Laser fusion power plants and fusion fuel targets

InfravisionBuda

Drones·Robotics·Energy

Drone systems for building power lines

Jet ZeroLong Beach

Aerospace·Energy

Blended-wing-body airliner with 250 seats

Kairos PowerAlameda

Nuclear·Energy

Fluoride salt-cooled advanced nuclear reactors

Kodion EnergyPaola

Energy·Electronics

Manufactures AI-monitored transformers for the power grid

Lakril TechnologiesChicago

Materials·Energy

Catalysts that make bio-based acrylic acid from lactic acid

Lazarus EnergyHawthorne

Energy

Modular supercritical CO2 turbines for power generation

Loa CarbonNew York

Energy

Synthetic methane made from captured CO2 and hydrogen

magniXEverett

Aerospace·Electronics·Energy

Electric propulsion motors for aircraft

Mana BatteryBoulder

Energy·Materials

Anode-free sodium-ion battery cells

MATERIALMiami

Manufacturing·Energy

3D-printed custom-shaped batteries for drones and devices

Modal MotorsDetroit

Manufacturing·Energy

Non-rare-earth, high-torque electric motors

MoleaerHawthorne

Energy

Nanobubble generators for water treatment and agriculture

mPower TechnologyAlbuquerque

Energy·Space

Ultralight solar cell modules for satellites

OkloSanta Clara

Nuclear·Energy

Fast fission microreactors and nuclear fuel recycling

Our Next EnergyNovi

Energy·Materials

Batteries for grid and vehicle energy storage

Overview EnergyAshburn

Space·Energy

Satellites that beam solar power down to the grid

Pacific FusionSan Leandro

Nuclear·Energy

Pulser-driven inertial fusion for grid power

Pajarito PowderAlbuquerque

Energy·Materials

Catalysts for fuel cells and electrolyzers

Path PowerOakland

Energy

Trenchless equipment for utility undergrounding

Peak EnergyBurlingame

Energy

Sodium-ion batteries for grid storage

PicogridEl Segundo

Sensors·Energy

Legion software linking sensors and weapons in the field

Planetary UtilitiesLos Angeles

Energy·Space

Conversational interface for systems engineering models

PlantedOakland

Energy·Robotics·Construction

Robots that install terrain-following solar arrays

Project OmegaWashington

Energy

Rebuilds the US nuclear fuel cycle, from fuel to recycling

Quaise EnergyHouston

Energy

Millimeter-wave drilling for deep geothermal energy

RadiantEl Segundo

Nuclear·Energy

Portable 1 MW nuclear microreactors

Raptor MapsSomerville

Energy·AI

Inspection and maintenance software for solar farms

Re:Build ManufacturingFramingham

Manufacturing·Defense·Aerospace

Engineering and contract manufacturing for product companies

Redwood MaterialsSparks

Energy·Mining·Materials

Recycles batteries into critical materials and grid storage

Reflect OrbitalHawthorne

Space·Energy

Satellites that reflect sunlight to Earth on demand

RevelBrooklyn

Mobility·Energy

Fast charging hubs for urban EV drivers

RFA ElectricLos Angeles

Energy

Software that automates analog circuit design

Rondo EnergyOakland

Energy·Manufacturing

Heat batteries that turn solar and wind into industrial heat

SHINEJanesville

Nuclear·Energy

Fusion-based neutron systems that produce medical isotopes

Sila NanotechnologiesAlameda

Materials·Energy

Silicon anode materials for lithium-ion batteries

SkySpecsAnn Arbor

Drones·Energy·Sensors

Autonomous drones and software for wind turbine inspection

SmartvilleSan Diego

Energy

Battery storage built from used EV packs

SolarcorePortland

Materials·Energy

Aerogel thermal insulation foams

SolestialTempe

Energy·Space

Silicon solar cells and arrays for spacecraft

SolugenHouston

Materials·Manufacturing·Energy

Makes chemicals from sugar using enzymes and metal catalysts

South 8 TechnologiesSan Diego

Energy

Liquefied-gas battery cells for extreme cold

Spinor EnergySeattle

Aerospace·Energy

Superconducting power systems for grid and industry

Standard ElectronAustin

Energy·Manufacturing

Factory-built power plants for industrial sites

Star CatcherJacksonville

Space·Energy

Optical power beaming network for satellites in orbit

Steelhead CompositesGolden

Manufacturing·Materials·Energy

Composite pressure vessels for aerospace and hydrogen

Stone PowerHawthorne

Energy·Manufacturing

Large industrial turbines for grid power generation

Sublime SystemsSomerville

Materials·Energy·Construction

Low-carbon cement made electrochemically without kilns

Syzygy PlasmonicsHouston

Energy·Materials

Photonic reactors that turn biogas into aviation fuel

TempoSan Diego

Energy

Thermochemical batteries for industrial heat

Terraform IndustriesBurbank

Energy

Makes synthetic natural gas from sunlight and air

TerraPowerBellevue

Nuclear·Energy

Sodium-cooled fast reactors with molten salt energy storage

TeslaAustin

Mobility·Energy·Manufacturing

Electric vehicles, batteries and grid energy storage

The AirCraft CompanyWichita

Aerospace·Energy

Hybrid-electric 30-seat regional airplanes

The Earthineering CompanyClaremont

Nuclear·Energy·Materials

Nuclear reactors that supply industrial process heat

Thea EnergyKearny

Nuclear·Energy

Stellarator fusion power plants with simplified magnets

Tidal FlightChesapeake

Aerospace·Mobility·Energy

Hybrid-electric seaplanes for coastal commuter travel

TwelveBerkeley

Energy·Materials

Converts CO2 into fuels and chemicals using electricity

Type One EnergyKnoxville

Nuclear·Energy

Stellarator fusion power plants for utility-scale energy

UnigridSan Diego

Energy

Sodium-ion battery cells

Upgrade EnergyEl Segundo

Energy

Long-range lithium batteries for drones

Valar AtomicsEl Segundo

Nuclear·Energy

Nuclear reactors for industrial power and fuel production

Via SeparationsWatertown

Energy·Materials

VoltaGridHouston

Energy·Manufacturing

Natural gas power plants for data centers and remote sites

Voxel EnergySan Francisco

Energy

Off-grid data centers deployed in months

Voya EnergyHayward

Energy·Materials

Aluminum-fueled generators for industrial power

Wake EnergyLos Angeles

Energy·Defense·Manufacturing

Lithium-ion battery packs for drones and defense

Western ChemicalsEl Segundo

Energy·Materials

Turns wastewater into low-cost fuels

WiBoticSeattle

Robotics·Energy

Wireless charging systems for robots and drones

Wildcat Discovery TechnologiesSan Diego

Materials·Energy

US-made battery cathode materials

X-energyRockville

Nuclear·Energy

High-temperature gas-cooled small modular reactors and fuel

Zap EnergyEverett

Nuclear·Energy

Fission and sheared-flow Z-pinch fusion power systems

Zeno PowerWashington DC

Space·Nuclear·Energy

Radioisotope power systems for space and seabed missions

Zephyr FusionSan Diego

Nuclear·Energy·Space

Megawatt-class fusion reactors for power in orbit