Alternatives to Radiant
The top Nuclear Energy companies similar to Radiant, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
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Valar Atomics69Climate TechEl Segundo, United States$2.6BNuclear energy startup developing small, high-temperature reactors for AI data centers and industrial applications.
- Website TETerrestrial Energy50Nuclear PowerCharlotte, United States$342.1M
Developing advanced Integral Molten Salt Reactors (IMSR) for clean, cost-competitive industrial heat and electricity.
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NuScale Power70Energy & Climate TechPortland, United States$389.6MDesigns and deploys advanced small modular nuclear reactor (SMR) technology for clean energy.
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Deep Fission47Advanced NuclearBerkeley, United States$271.1MPioneering underground small modular nuclear reactors for scalable, low-carbon baseload power.
- TETerraPower45Clean EnergyBellevue, USA$1.7B
Developing advanced nuclear reactor technology for clean energy.
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Aalo Atomics40Austin, United States$100.0MAalo Atomics builds fully modular nuclear plants to power modern AI data centers.
- X-X-energy37Rockville, United States$1.2B
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Kairos43Sports TechnologyDurham, United StatesTeamworks provides communication and messaging software for professional sports teams.
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Antares Industries47Nuclear EnergyLos Angeles, United StatesAdvanced nuclear energy startup designing adaptable and scalable microreactors for defense and industrial use.
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Amogy62Clean EnergyBrooklyn, United States$90.0MAmogy unlocks ammonia's potential as a clean energy source with proprietary reforming technology.
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Apollo61EnergyRamat Gan, Israel$50.0MDeveloping flexible, efficient, and low-cost solar cells to turn any surface into an energy source.
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Zap Energy61Clean EnergyEverett, USA$324.0MDeveloping advanced fusion and fission nuclear energy technologies for carbon-free power.
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Alsym Energy61Energy StoragePalo Alto, United States$155.1MDevelops non-flammable, high-performance, low-cost sodium-ion batteries for energy storage.
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Freyr Battery57Energy StorageLuxembourg City, Luxembourg$2.7BDeveloping and manufacturing next-generation battery cells for clean energy solutions.
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Electra56Climate TechTel Aviv, Israel$301.0MElectra is decarbonizing the iron and steel industry with clean-iron electrowinning technology.
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Inertia Enterprises55ClimateLivermore, United States$550.0MFusion power startup developing grid-scale power plants using advanced laser technology.
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Greenlyte54Climate TechEssen, Germany$15.0MDirect air capture startup producing CO2 and hydrogen for e-fuels and negative emissions.
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Hadron Energy54EnergyHouston, United States$8.2MDeveloper of micro-modular reactor (MMR) technology for clean energy.
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Coolbrook53Industrial TechnologyHelsinki, FinlandElectrifying the global steel industry with innovative technology.
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Onodrim51DefenseAmsterdam, Netherlands$43.2MDefence and industrial technology company developing integrated platforms.
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GigCapital751Financial ServicesHouston, United States$200.0MA SPAC combining with a developer of micro-modular nuclear reactor technology.
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Developing advanced battery technology for grid-scale energy storage.
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Commonwealth Fusion Systems50Clean EnergyDevens, United States$2.0BDeveloping compact, high-field fusion power plants to provide clean, limitless energy.
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Nuclear Turbines50Clean EnergyManchester, United Kingdom$18.9MDeveloping compact modular nuclear systems to make clean nuclear power cheaper than fossil fuels by utilizing high-temperature turbine technology.
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CarbonX50Battery TechnologyGroningen, Netherlands$22.4MDutch startup producing innovative 3D carbon structures for advanced battery anodes.
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Anaphite59AutomotiveBristol, United Kingdom$3.4MRevolutionizing EV battery manufacturing with solvent-free dry coating technology for lithium-ion battery electrodes.
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Prevalon Energy49Energy StorageSan Jose, United States$100.0MBattery company focused on energy storage solutions.
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H2SITE48CleantechBilbao, Spain$50.0MIndustrial company in hydrogen production and separation solutions.
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VMG Technics47Renewable EnergyKlaipėda, Lithuania$52.0MLithuanian partner in developing and scaling recyclable wind turbine blade production using engineered wood.
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Bluecore Energy44EnergyLong Beach, United States$10.0MZero-emission power for ports and critical infrastructure via floating nuclear reactors.
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SunHydrogen44Clean EnergySanta Barbara, United States$2.1MDeveloping a breakthrough, low-cost technology to produce renewable hydrogen using sunlight and any source of water.
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A premier player in precision technologies, specializing in critical safety components for solid rocket motors.
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Rodatherm Energy42Energy StorageTel Aviv, Israel$26.2MRodatherm Energy develops advanced thermal energy storage solutions for industrial applications.
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Sunfire64Clean EnergyDortmund, GermanyIndustrial electrolysis technology for green hydrogen and e-fuels production.
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Apollo Atomics50Nuclear PowerCambridge, United States$26.5MShrinking a key nuclear reactor part to make nuclear power cheaper than natural gas.
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Coreshell52EnergySan Leandro, USA$50.0MBattery materials startup focused on metallurgical silicon anode material.
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Enpal70Climate TechBerlin, Germany$3.2BGerman provider of integrated renewable energy solutions for homeowners, offering solar panels, battery storage, heat pumps, and EV charging.
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Generate Capital67Sustainable InfrastructureSan Francisco, United States$4.5BSustainable infrastructure platform providing affordable, reliable resource solutions for companies, communities, and cities.
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Comerc Energia66EnergySão Paulo, Brazil$589.0MComerc Energia provides comprehensive energy and decarbonization solutions for the free energy market.
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Software-first manufacturing company building a distributed network of AI-powered precision factories for critical industries.
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Modo Energy64EnergyLondon, United Kingdom$17.0MAI-powered benchmarking and valuation platform for energy storage and renewable assets, providing insights for bankable decisions.
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H2Pro49WaterTel Aviv, IsraelRevolutionary electrolyzer technology for affordable green hydrogen production at scale.
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SolarSquare64Renewable EnergyMumbai, India$67.5MA full-stack residential solar platform for households and housing societies.
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Rega Energy63Clean EnergyLisbon, Portugal$17.0MDevelops, finances, builds, owns, and operates biomethane and green hydrogen plants for industrial decarbonization.
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ArtIn Energy62EnergyTampa, United States$255.0MEnergy technology company focused on innovative solutions.
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Fusion startup developing a commercial fusion power plant.
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Stormfisher62Climate TechLondon, Canada$430.0MDevelops, owns, and operates industrial-scale facilities producing green hydrogen derived e-Fuels.
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Frankenburg Technologies61DefenseTallinn, Estonia$36.7MAn Estonian DefenseTech startup developing affordable, mass-producible, AI-powered air defense missile systems.
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Cylib61Battery RecyclingGermany, Germany$66.6MRevolutionizing battery recycling for a circular future in Europe.
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Develops and constructs large-scale battery energy storage systems directly connected to the high-voltage grid.
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PDW61AerospaceHuntsville, USA$170.0MDesigns and manufactures advanced unmanned aerial systems (UAS) for defense and public safety.
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Developing, building, and operating large-scale battery storage systems for grid stability and renewable energy integration.
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Tesvolt61Energy StorageLutherstadt Wittenberg, Germany$47.8MDevelops and delivers holistic energy systems for commercial businesses, combining battery storage with intelligent energy management.
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Hyperion Robotics60ConstructionEspoo, Finland$7.4MEnabling the construction industry to build smarter, faster, and greener with physical AI and robotic microfactories.
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Castelion60DefenseEl Segundo, United States$1.1BDefense startup mass-producing affordable hypersonic missile systems for the U.S. military, founded by ex-SpaceX engineers.
- CACarbonCount Holdings 160Sustainable Infrastructure$508.0M
A co-investment vehicle established by HA Sustainable Infrastructure Capital and KKR to invest in sustainable infrastructure assets.
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Northvolt AB59Energy StorageStockholm, Sweden$10.4BLeading European battery manufacturer focused on sustainable production for electric vehicles and energy storage.
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GPS Renewables57Clean EnergyBengaluru, India$80.8MWorld's largest biogas engineering company specializing in full-stack clean fuels technology.
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Cloverleaf Infrastructure57Data CentersHouston, United States$300.0MData center infrastructure developer providing power sources and site development, focusing on clean-powered, shovel-ready sites for energy-intensive workloads like AI.
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Heron Power56Climate TechTel Aviv, Israel$216.0MHeron Power develops industrial power electronics for the 21st-century grid, addressing surging energy demand with scalable, reliable, and software-integrated infrastructure.
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