When was Radiant Nuclear founded?

Radiant Nuclear was founded in 2019 and became a unicorn in 2025, reaching the milestone in 6 years. It raised its 1st funding round 1 year after its incorporation.

Where is Radiant Nuclear located?

Radiant Nuclear is headquartered in Los Angeles, United States.

Who is the current CEO of Radiant Nuclear?

Doug Bernauer of Radiant Nuclear. They have also founded 1 company.

How many employees does Radiant Nuclear have?

As of May 31, 2026, the latest employee count at Radiant Nuclear is 525.

Is Radiant Nuclear a funded company?

Radiant Nuclear is a funded company, having raised a total of $518M across 7 funding rounds to date. The company's 1st funding round was a $1.2M Angel round, raised on Sep 22, 2020.

How much is Radiant Nuclear worth?

The latest valuation of Radiant Nuclear is $1.8B as of Dec 15, 2025.

When was the latest funding round of Radiant Nuclear?

Radiant Nuclear's latest funding was a $300M Series D round on Dec 15, 2025, with participation from 6 investors.

Is Radiant Nuclear a Energy Efficiency Tech company?

The primary sectors of Radiant Nuclear are Energy Efficiency Tech and Nuclear Energy.

Where does Radiant Nuclear rank among its competitors?

Radiant Nuclear ranks 5th amongst 72 active competitors, of which 27 are funded. It stands 4th in terms of total funding among its competitors. The most recent competitor to raise funding was Terrestrial Energy, which secured $85.3K in Mar, 2026.

Who are the top competitors of Radiant Nuclear?

Radiant Nuclear's top competitors include Newcleo, TerraPower and NuScale Power. Among them, Terrestrial Energy secured the most recent funding round in March, 2026.

Radiant Nuclear - 2026 Company Profile, Team, Funding & Competitors

Sectors and market segments that Radiant Nuclear operate in

Radiant Nuclear serves in the Energy Tech, Environment Tech, Sustainability Tech, Energy, Environment market segments.The primary business model of Radiant Nuclear are:

Company Details

Developer of portable nuclear microreactors designed to replace diesel generators. The company offers a compact reactor with equipment to generate electricity. The reactors leverage air cooling and high-speed turbomachinery. The units can provide thermal power for facility heating or water desalination. The fuel is designed to be meltdown-proof. The reactors are assembled, fueled, and tested in the factory. After fuel depletion, the entire container is shipped back for refueling.

Website: radiantnuclear.com
Email ID: *****@radiantnuclear.com

Key Metrics

Founded Year

2019

Location

Los Angeles, United States

Stage

Series D

Total Funding

$518M in 7 rounds

Latest Funding Round

Series D, Dec 15, 2025, $300M

Post Money Valuation

$1.8B as on Dec 15, 2025

Investors

Andreessen Horowitz & 28 more

Ranked

5^th among 72 active competitors

Employee Count

525 as on May 31, 2026

Similar Companies

Baknor

View Radiant Nuclear's full profile

Radiant Nuclear is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Radiant Industries, Inc CIN: 7401323 , United States, Active	May 02, 2019	-	44 (As on Dec 31, 2023)	-

Radiant Nuclear has raised a total funding of $518M over 7 rounds. Its first funding round was on Sep 22, 2020. Its latest funding round was a Series D round on Dec 15, 2025 for $300M. 6 investors participated in its latest round. Radiant Nuclear has 24 institutional investors and 5 angel investors.

Here is the list of recent funding rounds of Radiant Nuclear:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Dec 15, 2025	$300M	Series D	$1.8B	-	Draper, Boost VC	Ark Invest ETFs, Chevron Technology Ventures, Friends & Family Capital, Founders Fund
Feb 13, 2025	$66M	Series C	-	-	-	-
Oct 23, 2024	$100M	Series C	-	-	DCVC	Andreessen Horowitz, Union Square Ventures, Felicis Ventures, Washington Harbour Partners, Chevron Technology Ventures, Founders Fund, Decisive Point, Boost VC, Also Capital, McKinley, Alaska Growth Capital

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View details of Radiant Nuclear's funding rounds and investors

The founders of Radiant Nuclear is Doug Bernauer. Doug Bernauer is the CEO of Radiant Nuclear.

Here are the details of Radiant Nuclear's key team members:

Doug Bernauer: Founder & CEO of Radiant Nuclear.
Contact Info: 1 email address

View details of Radiant Nuclear's Founder profiles and Board Members

Radiant Nuclear's employee count trend

Radiant Nuclear has 525 employees as of May 26. Here is Radiant Nuclear's employee count trend over the years:

Employee count trend for Radiant Nuclear

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Top competitors of Radiant Nuclear include Newcleo, TerraPower and NuScale Power. Here is the list of Top 10 competitors of Radiant Nuclear, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Newcleo 2021, Paris (France), Series B	Provider of advanced nuclear energy technologies, focused on designing, building, and operating small modular lead-cooled fast reactors	$843M	Club degli Investitori, LIFTT & 73 others	69/100
2nd	TerraPower 2006, Bellevue (United States), Series D	Designer of nuclear reactors	$1.52B	ArcelorMittal, SK & 9 others	67/100
3rd	NuScale Power 2007, Portland (United States), Acquired	Developer of micro nuclear power plants	$198M	Doosan Enerbility, IBK Securities & 7 others	63/100
4th	X Energy 2010, Greenbelt (United States), Public	Developer of small modular & high temperature gas cooled nuclear reactor	$1.53B	Ares Management, Jane Street & 23 others	63/100
5th	Radiant Nuclear 2019, Los Angeles (United States), Series D	Developer of portable nuclear microreactors designed to replace diesel generators	$518M	Union Square Ventures, Founders Fund & 27 others	60/100
6th	Terrestrial Energy 2013, Charlotte (United States), Series D	Developer of small modular reactor	$118M	Varana Capital, Innovation, Science and Economic Development Canada ... & 3 others	59/100
7th	Westinghouse Electric 1886, United States, Acquired	Developer of small modular reactor	-	Defense.gov, Europa & 6 others	58/100
8th	USNC 2011, Seattle (United States), Series B	Manufacturer of micro modular reactors	$47.4M	Hyundai Engineering & Construction, Europa ... & 1 others	54/100
9th	Jimmy 2021, Levallois Perret (France), Series A	Operator of thermal generators providing decarbonized heat to industrial clients	$17.3M	Eren Groupe, Otium Capital & 4 others	53/100
10th	Blykalla 2013, Stockholm (Sweden), Series C	Developer and producer of advanced small modular reactors	$73M	Norrsken Foundation, Oklo & 14 others	52/100