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Radiant Nuclear valuation, funding and investors

radiantnuclear.com ↗LinkedIn ↗

Radiant Nuclear works in nuclear microreactor development and manufacturing, based in El Segundo, United States. Founded in 2020, it has about 580 employees.

Electric Supplies & Power Generation Series D
VALUATION · TODAY
$2.25B +4% after Series D
Range $1.56B – $2.69B · Grade A
TODAY
+12 MO
$1.00B
$2.00B
$3.00B
$4.00B
2021
2022
2023
2024
2025
2026
2027
Series A $12.6M
Series B $40.0M
Series C $165M
Series D $300M
ValuationBefore first round12-month outlook: where it points, how wide it fansHover the past: the outlook shows what was predicted then
HEADCOUNT · TODAY580 employees
–6m growth
–1y growth
–2y growth
250
500
750
Data from Oct 2026
TODAY
Predicted in 1 yr $2.34B +4% vs today
Predicted next raise $257M if a round comes
Winding-down probability 0%
Last round
Series D · $300M · Dec 2025
Valuation at last round
$1.80B
Headcount
580
Grade
A
Founded
2020
How VCMC values companies →

Radiant Nuclear valuation today

VCMC values Radiant Nuclear at $2.3B today, with a range of $1.6B to $2.7B and a grade of A. The valuation starts from its last funding round, a Series D round in Dec 2025.

Valuation by date (87 rows)

Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.

Radiant Nuclear: valuation by date, as the model would have shown it on each date
DateValuationRangePredicted in 1 yrPhaseHeadcountTrendGradeWinding-down probability
1 Jan 2020$16.3M$5.94M – $44.8M$18.2M (+11%)before first round–unknownD0%
1 Feb 2020$16.5M$5.99M – $45.2M$18.3M (+11%)before first round–unknownD0%
1 Mar 2020$16.6M$6.05M – $45.6M$18.5M (+11%)before first round–unknownD0%
1 Apr 2020$16.8M$6.10M – $46.0M$18.7M (+11%)before first round–unknownD0%
1 May 2020$16.9M$6.16M – $46.4M$18.8M (+11%)before first round–unknownD0%
1 Jun 2020$17.1M$6.21M – $46.9M$19.0M (+11%)before first round–unknownD0%
1 Jul 2020$17.2M$6.27M – $47.3M$19.2M (+11%)before first round–unknownD0%
1 Aug 2020$17.4M$6.33M – $47.7M$19.3M (+11%)before first round–unknownD0%
1 Sep 2020$17.5M$6.38M – $48.2M$19.5M (+11%)before first round–unknownD0%
1 Oct 2020$17.7M$6.44M – $48.6M$19.7M (+11%)before first round–unknownD0%
1 Nov 2020$17.9M$6.50M – $49.0M$19.9M (+11%)before first round–unknownD0%
1 Dec 2020$18.0M$6.56M – $49.5M$20.1M (+11%)before first round–unknownD0%
1 Jan 2021$18.2M$6.62M – $49.9M$20.2M (+11%)before first round–unknownD0%
1 Feb 2021$18.3M$6.68M – $50.4M$20.4M (+11%)before first round–unknownD0%
1 Mar 2021$18.5M$6.73M – $50.8M$20.5M (+11%)before first round–unknownD0%
1 Apr 2021$18.7M$6.79M – $51.3M$20.7M (+11%)before first round–unknownD0%
1 May 2021$18.8M$6.85M – $51.7M$20.8M (+11%)before first round–unknownD0%
1 Jun 2021$19.0M$6.92M – $52.2M$21.0M (+10%)before first round–unknownD0%
1 Jul 2021$19.2M$6.98M – $52.7M$21.1M (+10%)before first round–unknownD0%
1 Aug 2021$19.3M$7.04M – $53.1M$21.3M (+10%)before first round–unknownD0%
1 Sep 2021$19.5M$7.11M – $53.6M$21.5M (+10%)before first round–unknownD0%
1 Oct 2021$19.7M$7.17M – $54.1M$21.6M (+10%)before first round–unknownD0%
1 Nov 2021$19.9M$7.24M – $54.6M$21.8M (+10%)before first round–unknownD0%
1 Dec 2021$20.1M$7.30M – $55.1M$21.9M (+9%)before first round–unknownD0%
1 Jan 2022$20.2M$7.37M – $55.6M$22.1M (+9%)before first round–unknownD0%
1 Feb 2022$20.4M$7.42M – $56.0M$22.3M (+9%)before first round–unknownD0%
1 Mar 2022$20.5M$7.47M – $56.4M$22.4M (+9%)before first round–unknownD0%
1 Apr 2022$20.7M$7.53M – $56.8M$22.6M (+9%)before first round–unknownD0%
1 May 2022$20.8M$7.58M – $57.2M$22.8M (+9%)before first round–unknownD0%
1 Jun 2022$21.0M$7.64M – $57.7M$22.9M (+9%)before first round–unknownD0%
1 Jul 2022$21.1M$7.70M – $58.1M$23.1M (+9%)before first round–unknownD0%
1 Aug 2022$21.3M$7.75M – $58.5M$23.3M (+9%)before first round–unknownD0%
1 Sep 2022$21.5M$7.81M – $58.9M$23.4M (+9%)before first round–unknownD0%
1 Oct 2022$21.6M$7.87M – $59.4M$23.6M (+9%)before first round–unknownD0%
1 Nov 2022$21.8M$7.93M – $59.8M$23.8M (+9%)before first round–unknownD0%
1 Dec 2022$21.9M$7.99M – $60.3M$24.0M (+9%)before first round–unknownD0%
1 Jan 2023$22.1M$8.05M – $60.7M$24.1M (+9%)before first round–unknownD0%
1 Feb 2023$22.3M$8.11M – $61.2M$24.3M (+9%)before first round–unknownD0%
25 Feb 2023$70.1M$46.0M – $192M$126M (+80%)after a round–unknownC0%
1 Mar 2023$70.6M$46.0M – $192M$126M (+79%)after a round–unknownC0%
1 Apr 2023$192M$136M – $409M$288M (+50%)after a round–unknownB0%
2 Apr 2023$193M$136M – $409M$288M (+50%)after a round–unknownB0%
1 May 2023$199M$136M – $409M$288M (+45%)after a round–unknownB0%
1 Jun 2023$206M$136M – $409M$288M (+40%)after a round–unknownB0%
1 Jul 2023$213M$136M – $409M$288M (+36%)after a round–unknownB0%
1 Aug 2023$220M$136M – $409M$288M (+31%)after a round–unknownB0%
1 Sep 2023$228M$136M – $409M$288M (+27%)after a round–unknownB0%
1 Oct 2023$236M$136M – $409M$288M (+22%)after a round–unknownB0%
1 Nov 2023$244M$136M – $409M$288M (+18%)after a round–unknownB0%
1 Dec 2023$252M$136M – $409M$288M (+14%)after a round–unknownB0%
1 Jan 2024$261M$136M – $409M$288M (+11%)after a round–unknownB0%
1 Feb 2024$270M$136M – $409M$288M (+7%)after a round–unknownB0%
1 Mar 2024$279M$136M – $409M$288M (+3%)after a round–unknownB0%
1 Apr 2024$288M$135M – $409M$288M (0%)after a round–unknownB0%
1 May 2024$288M$130M – $409M$288M (0%)after a round–unknownB0%
1 Jun 2024$288M$124M – $409M$288M (0%)after a round–unknownB0%
1 Jul 2024$288M$119M – $409M$288M (0%)after a round–unknownC0%
1 Aug 2024$288M$114M – $409M$288M (0%)after a round–unknownC0%
1 Sep 2024$288M$109M – $409M$288M (0%)after a round–unknownC0%
1 Oct 2024$288M$104M – $409M$288M (0%)after a round–unknownC0%
1 Nov 2024$288M$99.8M – $409M$288M (0%)after a round–unknownC0%
1 Dec 2024$288M$95.6M – $409M$288M (0%)after a round–unknownC0%
1 Jan 2025$288M$91.5M – $409M$288M (0%)after a round–unknownC0%
1 Feb 2025$288M$87.5M – $409M$288M (0%)after a round–unknownC0%
1 Mar 2025$288M$84.1M – $409M$288M (0%)after a round–unknownC0%
1 Apr 2025$288M$74.3M – $409M$288M (0%)after a round–unknownC0%
1 May 2025$288M$70.7M – $409M$288M (0%)after a round–unknownC0%
29 May 2025$1.2B$839M – $2.2B$1.5B (+30%)after a round–unknownB0%
1 Jun 2025$1.2B$839M – $2.2B$1.5B (+30%)after a round–unknownB0%
1 Jul 2025$1.2B$839M – $2.2B$1.5B (+27%)after a round–unknownB0%
1 Aug 2025$1.2B$839M – $2.2B$1.5B (+24%)after a round–unknownB0%
1 Sep 2025$1.3B$839M – $2.2B$1.5B (+21%)after a round–unknownB0%
1 Oct 2025$1.3B$839M – $2.2B$1.5B (+19%)after a round–unknownB0%
1 Nov 2025$1.3B$839M – $2.2B$1.5B (+16%)after a round–unknownB0%
1 Dec 2025$1.4B$839M – $2.2B$1.5B (+14%)after a round–unknownB0%
18 Dec 2025$1.8B$1.6B – $2.7B$2.3B (+30%)after a round–unknownA0%
1 Jan 2026$1.8B$1.6B – $2.7B$2.3B (+29%)after a round–unknownA0%
1 Feb 2026$1.9B$1.6B – $2.7B$2.3B (+26%)after a round–unknownA0%
1 Mar 2026$1.9B$1.6B – $2.7B$2.3B (+23%)after a round–unknownA0%
1 Apr 2026$1.9B$1.6B – $2.7B$2.3B (+21%)after a round–unknownA0%
1 May 2026$2.0B$1.6B – $2.7B$2.3B (+18%)after a round–unknownA0%
1 Jun 2026$2.0B$1.6B – $2.7B$2.3B (+15%)after a round–unknownA0%
1 Jul 2026$2.1B$1.6B – $2.7B$2.3B (+13%)after a round–unknownA0%
1 Aug 2026$2.1B$1.6B – $2.7B$2.3B (+10%)after a round–unknownA0%
1 Sep 2026$2.2B$1.6B – $2.7B$2.3B (+8%)after a round–unknownA0%
1 Oct 2026$2.2B$1.6B – $2.7B$2.3B (+6%)after a round580unknownA0%
24 Oct 2026$2.3B$1.6B – $2.7B$2.3B (+4%)after a round580unknownA0%

Key facts about Radiant Nuclear

Founded
2020
Headquarters
El Segundo, United States
Employees
about 580
Total raised
$518M
Funding rounds
4
Last round
Series D Dec 2025

Radiant Nuclear funding history

Radiant Nuclear has 4 funding rounds on record, from Feb 2023 to Dec 2025, $518M in total. The latest disclosed valuation is $1.80B post-money (Series D, Dec 2025).

  1. Series D 17 Dec 2025

    Led by Draper Associates, Boost VC; with Ark Venture Fund, Chevron Technology Ventures, Friends & Family Capital, Founders Fund, Washington Harbour, Andreessen Horowitz, Align Ventures, DCVC.

    Sources: radiantnuclear.com, mg21.com

    $300M

    $1.80B post-money

  2. Series C 28 May 2025

    Led by DCVC; with StepStone, Giant Ventures, HAM Ventures USA, SGA, Crossbeam Venture Partners, Align Ventures, ARK Invest, Gigascale Capital, HartBeat Ventures, Pax Ventures, Andreessen Horowitz, Union Square Ventures, Founders Fund, Draper Associates, Felicis, Washington Harbour, Chevron Technology Ventures, Decisive Point, McKinley Alaska, Nucleation Capital, Boost VC, Also Capital, Giant Ventures Global, Alumni Ventures.

    Sources: radiantnuclear.com, esgtoday.com, orrick.com and 3 more

    $165M

  3. Series B 1 Apr 2023

    Led by Andreessen Horowitz; with Founders Fund, Cantos, Boost VC, Draper Associates.

    Sources: mg21.com

    $40M

  4. Series A 24 Feb 2023

    With McKinley.

    Sources: thealaskacurrent.com, mg21.com

    $13M

Radiant Nuclear investors

30 investors have backed Radiant Nuclear; Andreessen Horowitz, Boost VC and DCVC and 1 more led at least one round.

  • Andreessen Horowitz lead, 3 rounds
  • DCVC lead, 2 rounds
  • Founders Fund 3 rounds
  • Align Ventures 2 rounds
  • Chevron Technology Ventures 2 rounds
  • Alumni Ventures
  • Ark Venture Fund
  • Crossbeam Venture Partners
  • Draper Associates
  • Felicis
  • Giant Ventures Global
  • HartBeat Ventures
  • McKinley Alaska
  • Pax Ventures
  • SGA
  • StepStone
  • Union Square Ventures

What Radiant Nuclear does

Radiant Nuclear works in electric supplies & power generation, with 14 recorded offerings and customers in energy, healthcare, defense and commercial.

Radiant Industries, Inc., known as Radiant Nuclear, is an American company engaged in the development and manufacturing of portable nuclear microreactors. The company designs and produces microreactors for use in remote areas, providing backup power for hospitals, data centers, and military installations. Radiant Nuclear also offers power purchase agreements and direct unit sales, and is involved in the testing and deployment of its microreactor technology.

Description from Veridion's company data.

Products and services

  • Nuclear Microreactor Development and Manufacturing
  • Portable Microreactor Deployment Services
  • Clean Energy Power Solutions Delivery
  • Autonomous Microreactor Monitoring and Data Streaming
  • Microreactor Fueling and Refueling Services
  • Microreactor Maintenance and Logistics Services
  • Power Purchase Agreement Services
  • Direct Microreactor Unit Sales
  • Renewable Infrastructure Integration Solutions
  • Resilient Backup Power Solutions Delivery
  • Hospital and Data Center Power Supply Services
  • Military Installation Power Supply Services
  • Remote Area Power Supply Services
  • Sustainable Energy System Advancement Services

Markets

  • Energy
  • Healthcare
  • Defense
  • Commercial

Technology

  • TRISO Fuel Technology
  • High-Speed Turbomachinery for Power Generation
  • Helium Gas Heat Transfer for Radioactive Contamination Prevention
  • Data Streaming for Centralized Fleet Monitoring

Business model

  • Business-to-Business
  • Business-to-Consumer
  • Manufacturing

Industry codes (NAICS)

  • 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers 100% match

Questions about Radiant Nuclear

What is Radiant Nuclear worth?

Valuation $2.3B (range $1.6B to $2.7B), as of 24 Oct 2026. The last disclosed valuation was $1.80B (Series D, Dec 2025).

Has Radiant Nuclear raised money?

Radiant Nuclear has 4 funding rounds on record, from Feb 2023 to Dec 2025, $518M in total. The latest disclosed valuation is $1.80B post-money (Series D, Dec 2025).

Who has invested in Radiant Nuclear?

Andreessen Horowitz, Boost VC, DCVC, Draper Associates, Founders Fund and Align Ventures, and 24 more. Lead investors include Andreessen Horowitz, Boost VC, DCVC and Draper Associates.

How many people work at Radiant Nuclear?

About 580.

What does Radiant Nuclear do?

Radiant Nuclear works in electric supplies & power generation, with 14 recorded offerings and customers in energy, healthcare, defense and commercial. Its main offerings are nuclear microreactor development and manufacturing, portable microreactor deployment services and clean energy power solutions delivery.

When was Radiant Nuclear founded, and where is it based?

Radiant Nuclear was founded in 2020 and is based in El Segundo, United States. It has about 580 employees.

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