185 companies
Loading map…
Company Directory
All 185 companies organized by supply chain sector.
CompanyLocationCategory
Equipment Manufacturing112▶
Ayr EnergyStandardized HV transformers; manufacturing via India partners; $500M+ backlog
San Francisco, CATransformersWebsite ↗DG MatrixMultiport solid-state transformers for data centers; $140M raised; NC manufacturing
Raleigh, NCSolid-State TransformersWebsite ↗Heron PowerMedium-voltage SSTs; $140M Series B; ex-Tesla SVP Drew Baglino; building 40GW factory
San Jose, CASolid-State TransformersWebsite ↗Ideal PowerBidirectional bipolar junction transistor technology
Austin, TXBidirectional Power SwitchesWebsite ↗Form EnergyIron-air batteries (100+ hour duration); Weirton WV factory
Somerville, MALong-Duration StorageWebsite ↗Eos EnergyZinc-based battery storage; Turtle Creek PA factory
Edison, NJLong-Duration StorageWebsite ↗Our Next Energy (ONE)LFP battery cells for EVs and stationary storage; Van Buren Township MI
Novi, MILFP Battery CellsWebsite ↗Natron EnergySodium-ion batteries for data centers and industrial; Holland MI
Santa Clara, CASodium-Ion BatteriesWebsite ↗EnerVenueMetal-hydrogen batteries for grid storage; expanding manufacturing
Fremont, CANickel-Hydrogen BatteriesWebsite ↗OkloAurora compact fast reactor; Sam Altman backed; public via SPAC
Santa Clara, CAAdvanced Fission ReactorsWebsite ↗TerraPowerNatrium sodium fast reactor; building demo in Kemmerer WY; Bill Gates backed
Bellevue, WASodium ReactorsWebsite ↗Kairos PowerFluoride salt-cooled reactor; building demo Hermes in Oak Ridge TN
Alameda, CAMolten Salt ReactorsWebsite ↗NuScale PowerVOYGR SMR; only NRC-approved SMR design; publicly traded
Portland, ORSmall Modular ReactorsWebsite ↗Last EnergyMicro modular reactors for industrial and data center power
Washington, DCMicro Modular ReactorsWebsite ↗LightbridgeMetallic nuclear fuel technology for higher performance
Reston, VAAdvanced Nuclear FuelWebsite ↗Mainspring EnergyFuel-flexible linear generator; alternative to gas turbines
Menlo Park, CALinear GeneratorsWebsite ↗NET PowerSupercritical CO2 Allam cycle natural gas with inherent carbon capture; already on list but noting it's now public
Durham, NCClean Gas PowerWebsite ↗TS ConductorCarbon core conductors; DOE funded; double capacity of existing lines
Erie, MIAdvanced ConductorsWebsite ↗VeirHigh-temperature superconducting transmission lines
Woburn, MASuperconducting TransmissionWebsite ↗LineVisionSensors that measure real-time line capacity; increase throughput 20-40%
Somerville, MADynamic Line RatingWebsite ↗Smart WiresModular power flow control devices for existing transmission
Durham, NCPower Flow ControlWebsite ↗FreeWire TechnologiesEV chargers with integrated battery storage
Oakland, CABattery-Integrated EV ChargingWebsite ↗TeraWatt InfrastructureDeveloping EV charging depot sites for fleets
Santa Clara, CAEV Charging DepotsWebsite ↗Fervo EnergyEnhanced geothermal systems; operating in NV and UT
Houston, TXEnhanced GeothermalWebsite ↗Sage GeosystemsGeothermal energy and underground thermal storage
Houston, TXGeothermal Energy StorageWebsite ↗VoxelSecond-life EV batteries for data center power; YC company
San Francisco, CASecond-Life BatteryWebsite ↗PowerMatrixUltra-efficient power supplies for GPUs and data centers; YC company
San Jose, CAPower SuppliesWebsite ↗Helion EnergyMagneto-inertial fusion; $1.5B raised; Microsoft PPA for 2028 grid power; Polaris prototype hit 150M degrees C
Everett, WAFusionWebsite ↗Commonwealth Fusion SystemsTokamak fusion with HTS magnets; $3B raised; SPARC prototype 75% complete in Devens MA; ARC plant planned for VA
Devens, MAFusionWebsite ↗TAE TechnologiesBeam-driven FRC fusion; $1.79B raised; merging with Trump Media (NASDAQ: DJT); hydrogen-boron fuel
Foothill Ranch, CAFusionWebsite ↗Inertia EnterprisesLaser inertial confinement fusion; $450M Series A; founded by NIF chief scientist Annie Kritcher
San Francisco, CAFusionWebsite ↗Pacific FusionElectromagnetic inertial confinement; $1B+ Series A in milestone-based tranches; led by Eric Lander
San Francisco, CAFusionWebsite ↗Xcimer EnergyExcimer laser for inertial confinement fusion; $100M raised
Redwood City, CAFusionWebsite ↗SHINE TechnologiesFusion for medical isotope production and industrial inspection; $1B raised; Janesville WI facility
Janesville, WIFusion & Medical IsotopesWebsite ↗Focused EnergyLaser-driven inertial confinement; $400M+ (private + government); R&D hubs in Austin TX and Germany
Austin, TXFusionWebsite ↗QuantumScapeSolid-state lithium-metal batteries; public (NYSE: QS); opened pilot production line Feb 2026
San Jose, CASolid-State BatteriesWebsite ↗Solid PowerSulfide solid-state batteries; public (NASDAQ: SLDP); partnerships with BMW and SK On
Louisville, COSolid-State BatteriesWebsite ↗Urban Electric PowerRechargeable zinc-manganese dioxide batteries; safer alternative chemistry; $30M+
Pearl River, NYZinc-Manganese BatteriesWebsite ↗TorusEnergy storage and power management for utilities and data centers; $200M Series A; South Salt Lake UT manufacturing
South Salt Lake, UTDistributed Energy StorageWebsite ↗Lunar EnergyIntegrated home battery and energy management system; partnership with LG
Mountain View, CAHome EnergyWebsite ↗Span.IOSmart electrical panel for home electrification; enables solar battery EV charger integration
San Francisco, CASmart Electrical PanelWebsite ↗Enovix3D silicon lithium-ion battery cells; public (NASDAQ: ENVX); Fremont CA fab
Fremont, CASilicon BatteriesWebsite ↗SES AIHybrid lithium-metal batteries; public (NYSE: SES); partnerships with GM Honda Hyundai
Boston, MALithium-Metal BatteriesWebsite ↗EnergyVaultGravity-based and hybrid energy storage systems; public (NYSE: NRGV)
Westlake Village, CAGravity StorageWebsite ↗Hyzon MotorsHydrogen fuel cell commercial vehicles (trucks buses); Rochester NY
Rochester, NYHydrogen Fuel Cell VehiclesWebsite ↗Nikola CorporationHydrogen fuel cell and battery electric trucks; public (NASDAQ: NKLA)
Phoenix, AZHydrogen TrucksWebsite ↗Electric HydrogenLarge-scale electrolyzers for industrial green hydrogen; $585M+ raised; building factory in Devens MA
Natick, MAElectrolyzersWebsite ↗MonolithMethane pyrolysis to produce clean hydrogen and carbon black; Olive Creek NE plant
Lincoln, NEClean Hydrogen & Carbon BlackWebsite ↗VerdagyLarge-scale water electrolyzers for green hydrogen; $103M raised
Moss Landing, CAAdvanced ElectrolyzersWebsite ↗InfiniumElectrofuels (eFuels) from CO2 and green hydrogen for shipping and aviation
Sacramento, CAeFuelsWebsite ↗Antora EnergySolid-state thermal batteries storing energy as heat in carbon blocks; $150M+; San Jose CA
San Jose, CAThermal StorageWebsite ↗Malta IncPumped-heat energy storage using molten salt and chilled liquid; Alphabet/X spinoff
Cambridge, MAThermal StorageWebsite ↗Rondo EnergyHeat batteries that convert intermittent electricity into continuous industrial heat; Saddleback CA
Oakland, CAIndustrial Heat StorageWebsite ↗Quidnet EnergyUnderground pumped hydro using existing well infrastructure
Houston, TXGeo-Mechanical StorageWebsite ↗Bedrock EnergyAI-optimized geothermal heating and cooling systems for commercial buildings
San Francisco, CAGeothermalWebsite ↗Dandelion EnergyResidential geothermal heat pump installation
New York, NYGeothermal Heat PumpsWebsite ↗Gradient ComfortWindow heat pump units for heating and cooling; $61M raised
San Francisco, CAHeat PumpsWebsite ↗Apollo AtomicsNuclear SMR and manufacturing; YC P2026 batch
Cambridge, MASmall Modular ReactorsWebsite ↗MadroneCooling systems for data centers using dew-point tech; 30% less power and water in Texas
Mountain View, CAData Center CoolingWebsite ↗RoboDockRobots that automate EV fleet depot operations including charging and vehicle checks
San Francisco, CAFleet Depot RoboticsWebsite ↗Reach LabsLong-range wireless power networks for scalable resilient energy infrastructure; 45 employees
Redwood City, CAWireless PowerWebsite ↗Maritime FusionFusion reactors for ships and off-grid markets; also commercializing HTS cable tech; ex-SpaceX team
San Francisco, CAMarine Fusion ReactorsWebsite ↗PrometheusZero net carbon jet fuel and gasoline from CO2 and water using renewable electricity; American Airlines contract for 10M gallons
Santa Cruz, CAElectrofuelsWebsite ↗RadiantPortable nuclear microreactors for remote and defense applications
Los Angeles, CANuclearWebsite ↗The Earthineering CompanyNuclear energy and materials company
Los Angeles, CANuclear & MaterialsWebsite ↗Charge RoboticsRobots that automate solar farm construction; reduces labor needs for solar installation
San Francisco, CASolar Construction RoboticsWebsite ↗Terraform IndustriesConverting solar electricity into synthetic natural gas and fuels; Pasadena CA
Los Angeles, CASynthetic FuelsWebsite ↗HeliogenAI-powered concentrated solar energy for industrial heat and power; went public then restructured
Los Angeles, CAConcentrated SolarWebsite ↗H3X TechnologiesUltra-high power density electric motors for aerospace and energy; 100kW motor weighing 15lbs
Denver, COElectric MotorsWebsite ↗Steelhead CompositesLightweight composite pressure vessels for hydrogen storage and transport
Denver, COHydrogen StorageWebsite ↗MoleaerNanobubble generators for water treatment and industrial processes
Los Angeles, CANanobubble TechnologyWebsite ↗Grid & Delivery2▶
Lifecycle & Recycling9▶
Moxion PowerBattery-electric mobile power replacing diesel generators
Richmond, CAMobile Battery PowerWebsite ↗Sesame SolarSelf-contained mobile renewable nanogrid units
Ann Arbor, MIMobile Renewable PowerWebsite ↗SOLARCYCLEAlready on your list but noting $40M+ raised; Odessa TX; extracting silver silicon copper glass
Odessa, TXSolar RecyclingWebsite ↗Nth CycleAlready on your list but confirming; electro-extraction from e-waste and mining waste; Salem MA
Salem, MACritical Mineral RecoveryWebsite ↗Renewell EnergyRepurposing abandoned oil and gas wells for geothermal energy
San Francisco, CAGeothermal from Oil WellsWebsite ↗Momento EnergySecond-life EV batteries for stationary storage
Moss Landing, CASecond-Life EV BatteriesWebsite ↗Processed Materials22▶
Redwood MaterialsBattery recycling to cathode and anode copper foil; JB Straubel (Tesla co-founder)
Carson City, NVBattery Recycling & MaterialsWebsite ↗American Battery Technology CoLithium refinery and battery recycling; $115M DOE grant reinstated
Reno, NVLithium Refining & RecyclingWebsite ↗Ascend ElementsClosed-loop battery recycling producing cathode materials; Hopkinsville KY factory
Westborough, MABattery Recycling to CathodeWebsite ↗Sila NanotechnologiesNext-gen silicon anode material; Moses Lake WA factory
Alameda, CAAnode MaterialsWebsite ↗Niron MagneticsIron nitride permanent magnets (no rare earths needed)
Minneapolis, MNRare Earth-Free MagnetsWebsite ↗Phoenix TailingsExtracts rare earths from mining waste without toxic chemicals; $76M+ Series B; first US rare earth metallization facility in NH
Woburn, MARare Earth ProcessingWebsite ↗Group14 TechnologiesSilicon-carbon composite anode material for lithium-ion batteries; $400M+ raised; scaling production
Woodinville, WASilicon AnodeWebsite ↗Nuvola TechnologyCeramic coating for battery cells that reduces fire risk by 99%; piloted with top battery and auto manufacturers
Los Angeles, CABattery SafetyWebsite ↗Lilac SolutionsIon exchange technology for direct lithium extraction from brine; DOE backed; Reno NV
Oakland, CALithium ExtractionWebsite ↗1366 Technologies (CubicPV)Direct wafer manufacturing that skips the ingot-slicing step; merged into CubicPV
Bedford, MASilicon WafersWebsite ↗MaverickXChemical technology for enhanced oil recovery and lithium extraction from low-grade ores; 30 employees
Austin, TXChemical Extraction TechWebsite ↗NuvolaSpray-on ceramic separator for battery cells; reduces fire risk 99%; saves $350M per 40GWh factory
Los Angeles, CABattery Safety CoatingWebsite ↗Pajarito PowderPlatinum group metal and PGM-free catalysts for hydrogen fuel cells; Albuquerque NM
Albuquerque, NMFuel Cell CatalystsWebsite ↗Via SeparationsGraphene oxide membranes for industrial separations; reduces energy use in chemical and pulp processing by 90%
Boston, MAIndustrial MembranesWebsite ↗ElectroflowElectrochemical extraction technology for mining and materials processing
San Francisco, CAMining & ExtractionWebsite ↗EquaticOcean-based carbon removal that also produces green hydrogen as byproduct
Los Angeles, CAOcean Carbon & HydrogenWebsite ↗Raw Materials8▶
Perpetua ResourcesStibnite mine in Idaho; only significant US antimony source
Boise, IDAntimony & GoldWebsite ↗USA Rare EarthRare earth processing pilot in Stillwater OK; DOE funded
New York, NYRare EarthsWebsite ↗Controlled Thermal ResourcesGeothermal power + lithium extraction from Salton Sea brine
Imperial County, CAGeothermal & LithiumWebsite ↗Terranox AIAI-powered uranium deposit discovery in North America using 70+ years of exploration data
San Francisco, CAUranium ExplorationWebsite ↗MP MaterialsOnly operating US rare earth mine; building magnet factory in Fort Worth
Las Vegas, NVRare EarthsWebsite ↗Systems & Software19▶
ValidereMRV (measurement reporting verification) SaaS for energy supply chain data; 50+ North American energy companies
Houston, TXEnergy Supply Chain SaaSWebsite ↗DartboardAI analyst for electricity market optimization for battery project owners
San Francisco, CAGrid AnalyticsWebsite ↗RewbiAI-powered dispatch optimization for grid-connected battery storage
San Francisco, CABattery DispatchWebsite ↗Plural EnergyFractional ownership of renewable energy assets via blockchain securities
San Francisco, CARenewable Asset TokenizationWebsite ↗Palmetto Clean TechnologyClean energy marketplace and software platform for installers
Charleston, SCSolar MarketplaceWebsite ↗David EnergyEnergy retailer that uses distributed energy resources as virtual power plant
New York, NYEnergy Retail & VPPWebsite ↗matforgeAI agents that discover new materials for semiconductors and datacenters; founder PhD Stanford
San Francisco, CAMaterials Discovery AIWebsite ↗Inviscid AIPhysics-informed AI digital twins for building and data center HVAC and airflow optimization
San Francisco, CABuilding Energy AIWebsite ↗IonworksSoftware that replaces battery experiments with cloud simulations; reduces R&D costs for battery companies
Pittsburgh, PABattery SimulationWebsite ↗Zitara TechnologiesSoftware for battery safety reliability and lifecycle management; 33 employees
San Francisco, CABattery Management SoftwareWebsite ↗NectarAI energy management platform automating utility data analysis for energy and sustainability teams
San Francisco, CAEnergy ManagementWebsite ↗AtmetoML algorithms for grid battery storage optimization; unlocking gigawatts of untapped storage capacity
Los Angeles, CABattery Storage AIWebsite ↗Raptor MapsAI-powered solar asset management and inspection software; drone thermal imaging of solar farms
Boston, MASolar Asset ManagementWebsite ↗SkySpecsDrone-based wind turbine blade inspection and asset management software
Ann Arbor, MIWind Turbine InspectionWebsite ↗InfravisionDrone and robotics inspection for energy infrastructure
Austin, TXInfrastructure InspectionWebsite ↗Systems Integration13▶
Scale MicrogridsBehind-the-meter distributed energy and microgrid development
New York, NYMicrogridsWebsite ↗Enchanted RockNatural gas microgrids for backup and resilient power; serves hospitals and data centers
Houston, TXResilient MicrogridsWebsite ↗American TerawattOff-grid and behind-the-meter power infrastructure for AI data centers; $52.6M raised; Founders Fund backed
San Francisco, CAData Center PowerWebsite ↗Crusoe EnergyData centers powered by stranded and wasted energy sources
Denver, COData Center PowerWebsite ↗Torus Clean EnergyModular microreactor designs for distributed power
South Salt Lake, UTModular NuclearWebsite ↗PalmettoClean energy marketplace connecting homeowners with solar and storage installers
Charleston, SCResidential Solar PlatformWebsite ↗Vista PowerDesigns finances installs and manages commercial solar and storage for $0 upfront; ex-SpaceX and Rocket Lab team
San Francisco, CACommercial Solar & StorageWebsite ↗AstroAI models to find profitable grid connections for renewable energy projects; ex-Citadel energy trader founder
New York, NYRenewable Site SelectionWebsite ↗VoltaGridMobile power and microgrid solutions for remote industrial sites; natural gas to electric
Houston, TXMobile PowerWebsite ↗RevelEV charging superhubs and electric rideshare in NYC
New York, NYEV Charging & RideshareWebsite ↗Base PowerHome battery + energy provider; earns from grid balancing to lower customer rates
Austin, TXDistributed Energy StorageWebsite ↗