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The Nuclear Renaissance - Radiant |  a16z American Dynamism Transcript, AI Summary & Key Points

a16z · 2 hours ago · Science & Technology · 13:14 · EN

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00:03 [music] We must think far beyond of what that nuclear power can do in terms of peace. Here we have a new source of energy. A source of energy that is absolutely important to the future of the world. That is why as far as this particular matter is concerned in the terms of nuclear power, we must not be afraid. We must explore it. [music] The core thesis of Radiant is about prosperity for civilization, for every human, which means making power more affordable for more people.

00:41 It's really just about enabling humans to be even more human. Power is the source and it is civilization itself. The US lost its ability to iterate on nuclear power as a source of energy. That happened because we didn't listen to customers. And so we have to massproduce small reactors because that's what customers actually want. And when the US regains its ability to iterate on nuclear technology, the future of energy changes.

01:25 [music] >> There were actually 52 nuclear reactors built at Ido National Laboratory in 21 years span. The last of which [music] was 1977 and none since then. There are no advanced reactors. Everything was done in the 1950s [music] and60s. Nuclear really got sidelined by the environmental advocacy groups that pushed misinformation on the general public.

01:51 We just continue [music] to ratchet up regulations for a variety of reasons including some of the public perceptions around nuclear is my opinion that we regulated nuclear [music] out of business because we made it too expensive. >> The current state of the energy grid is not great and it doesn't say hey America's ready to build. We need energy for everything.

02:12 And the grid we're building on right now is mostly created in the 60s and 70s. Technology has changed a lot. Society [music] has changed a lot. And it's starting to show that what we're building on is aging. About 45% of Americans have experienced one outage in the last year. For a business, that can be catastrophic. It's a really important thing for folks to grasp that when you [music] turn the lights on, it's from the 60s.

02:40 We kind of run just at the median of the power we need. And on some days in many states, we actually dip below what we need from an energy [music] perspective to really innovate. To unlock prosperity, we have to get above the line of what we need. We have to give ourselves room to do all of those. And that from a national security perspective is what will allow the US to be the US we all grew up dreaming about.

03:08 [music] >> Countries that rely on other nations for their energy have strings attached. When [music] there is conflict and energy sources are relied upon from other nations that have become adversaries, it can cause an entire country to shut down. To be able to have your own energy independence provides energy security as [music] well. And that is exactly what nuclear power can provide.

03:49 I founded Radiant after working at SpaceX for about 12 years. One of the things I worked on was this Mars [music] challenge, which is to make life multilanetary. In order to really make that happen, you need to be able to take Starship to Mars and then make fuel on Mars and bring it back. And to do that, you need power. And so I looked into solar power on Mars and found that was really challenging.

04:09 And then I looked into nuclear power on Mars and found that was the only way. I didn't want to found a company. I had to do it because I knew that the mission that SpaceX itself had could not be achieved unless we had nuclear and I wasn't able to work on it. So it forced me to found a company. Doug builds in machines and systems and I build in people and companies.

04:27 The more we got into it, we kind of discovered together the impact that we could have. >> [music] >> What we want to be doing is building reactors, not reactor buildings. >> You got to dig a massive hole in the ground. And once you start digging a hole in the ground in the US, you have no idea how long or how expensive that [music] project will be. Costs are very hard to control.

05:02 Once you make a nuclear reactor and a ground at a site, [music] that site is a radiological site for forever. Puspers are not super excited about that. [music] When Doug was designing the product, he said, "Well, all of these things must be [music] true, and therefore I have to make a product that is above ground, that is movable to where customers need it, and then also that they don't have to deal with waste on site."

05:32 And so, you got Kidos. It's a transportable by land, air, and sea micro reactor. After a customer has used it, we take it back to our factory site in Oakidge, Tennessee, and refuel it. We handle all of the parts of the nuclear industry that customers didn't want. >> I always tell people when I talk about the kidos reactor to think of a diesel generator.

05:52 Anywhere you'd see a diesel generator, you could bring in a kidos reactor. They're roughly the same size except you don't have to refill it every 8 hours. [music] It gives you power for 5 years and it provides much more power, many, many times more power than a diesel generator. And you can daisy chain them together. So you can bring in four kitus reactors and power a small city.

06:12 [music] You could power a very large data center. You have all kinds of capabilities that come around [music] from something that really can be put on the back of an 18-wheeler. That kind of power generation and making it transportable [music] has never existed before. That's why I say there's actually use cases that we haven't really even imagined yet.

06:27 One [music] of our units is 5 years of power in a box that just gets delivered, fits in a few parking spaces, and then whenever you want us to take it away, [music] we take it away, which hasn't really done before. It's only possible if you make a size about 1 megawatt, right? make a small [music] enough reactor, you can do this, transport it there and back again sort of trick and take the fuel back and so you have like no nuclear strings attached, you can [music] just have clean power.

06:51 So for national security, we also don't know where we might need power sources to be set up. So if you need to rapidly deploy AI, you need to rapidly deploy drones, you need to rapidly put something somewhere, it needs to come with power. And if you're not on a grid, you need to bring the grid with you in a box. [music] When you're building a commercial product, you have to have the same desire [music] to lower customer friction as Apple did with the iPhone.

07:16 With nuclear reactors, that might sound wild, but it's an absolute necessity. We have to control all of our costs [music] inside our factory, and we can't put any of that burden onto our customer. We can't put any of the burden of the construction on site, [music] the interconnect onto them. We really need to make it as simple as make a reactor. It shows up, it plugs in, you get power.

07:40 [music and snorts] >> If you can change that dynamic to factory build, you take those uncertainties off the table. You might translate a little or some part of those uncertainties to building your factory and your entire process, [music] but once you've done that, you're done. If you're successful, then you can just start turning out that commodity.

08:00 [snorts] And your customer then has a much much lower potentially even almost zero uncertainty in their cost in their on-site activities or just completely produced. That is a tremendous promise of factorybuilt nuclear. We're taking this unit to the dome which [music] is this 80 foot diameter structure that was built in the 50s. It actually had the experimental breeder reactor in it at Idaho National Laboratory.

08:31 Since 2020, we've been on target for going there by 2026 [music] and then we'll go critical. The system is designed to go to over 700° C [music] and then we'll run for 150 hours continuously. >> That dome was going to be torn down and ultimately was repurposed for this purpose that now enables Radiant to be the first company that comes in [music] that was selected through a competitive process.

08:55 Radiant was selected. Simplistically speaking, the maturity of their technology, the maturity of their planning, [music] the benefits of that test are going to be in terms of a full power test over a significant period of time, which will be our first full power test [music] at the laboratory in a very, very long time. When Radiant first started talking to ENL about testing in the dome, we were I think somewhere around 20 employees and we said four years from now, we're going to build a commercial prototype of our

09:28 reactor and we're going to test [music] it in that facility. And they said, well, we're going to have to build out that facility, too, and you're 20 people. And so there's a lot of faith and trust [music] and process that we put in the way as we were developing both the product itself as well as the full test campaign, the test facility. And really through all of that is where we developed [music] the partnership.

09:50 >> The executive orders that our president signed May [music] of last year accelerated everything. And so that is a critical component that has helped make this possible. As a number of companies [music] race, nobody has turned on a new commercial micro reactor ever before. And Radiant's going to be the first to do that. [music] [music] We don't design, build, and execute on safe reactors.

10:35 >> [music] >> No one's going to buy them. We are a company that needs to make money. We are in the United States. Making money is pretty important to sustain to build out the full mission. If we were a cavalier and how we built even the prototype, we put the future at risk and our customers at risk in a way that is almost completely perverse to what the mission's goal is.

10:54 [music] >> What's happening in nuclear right now is unbelievable for somebody like me who has spent my entire career in nuclear. I believe we're in a full-on renaissance. >> The world is watching, but the world is waiting. And there are many companies that want to deploy, but they just don't want to be first. And Radiant is willing to be first [music] and has the courage to take those calculated risks and then demonstrate to the world, not only the public, that's an important [music] point, that you demonstrate to the

11:27 public, that this can be done and it can be done quickly. I love the idea of one nuclear [music] reactor per week just coming off of a production line. We'll be able to just plug in a nuclear power module to any of their designs and then [music] proliferate our use of power in space. Maybe make a city on the bottom of the ocean. [music] Maybe put a reactor at that high up camp on Mount Everest.

11:46 Just put [music] power in places that today seem totally crazy and impossible. >> Nothing we're trying [music] to do at Radiant is considered reasonable. We're an energy company at our core. We want to change society's relationship to energy. [music] You don't do that by doing a slightly different version of something that's always been done. You have to come out with a kind of ridiculous stance and really drive in that direction to accomplish it.

12:13 [music] >> Nuclear micro reactors that are mass-produced, that are reliable in the most wild scenario enables humans to leave the star that we were born [music] at, the sun, and go to other ones. And it's imperative that we do it as a civilization. [music] [music]

🧠 AI Summary

Radiant is pursuing a nuclear renaissance through mass-produced, transportable microreactors designed to provide reliable power without requiring customers to build reactor facilities or manage nuclear waste on site. Its Kidos reactor is designed to operate for 5 years, deliver about 1 megawatt of power, be transported by land, air, or sea, and be returned to Radiant for refueling. Factory production is intended to reduce construction uncertainty and customer friction while supporting energy security, data centers, remote locations, national security, space missions, and future unconventional applications. Radiant plans to test its prototype at Idaho National Laboratory in 2026, operating above 700° C for 150 continuous hours.

🔑 Key Points

  • The United States lost its ability to iterate on nuclear power and has not built an advanced reactor at Idaho National Laboratory since 1977.
  • Radiant's strategy is to mass-produce small reactors based on customer needs rather than construct large, site-built reactor facilities.
  • The Kidos reactor is transportable by land, air, and sea, provides 5 years of power, and is returned to Radiant for refueling.
  • Factory-built reactors are intended to control costs and remove construction, interconnection, and on-site nuclear-waste burdens from customers.
  • Reliable domestic nuclear power can improve energy independence and reduce exposure to energy disruptions caused by geopolitical conflict.
  • Radiant plans to test a commercial prototype at Idaho National Laboratory in 2026.
  • Safe reactor design and commercial viability are both necessary to sustain Radiant's broader mission.
  • Mass-produced microreactors could expand power availability to remote, military, space, underwater, and other unconventional locations.

✅ Actionable items

  • Radiant designs the reactor above ground so it can be moved to where customers need power.
  • Radiant takes used reactors back to its factory site in Oak Ridge, Tennessee, and refuels them.
  • Customers can daisy-chain multiple Kidos reactors to increase available power.
  • Radiant is developing a full-power prototype test campaign at Idaho National Laboratory.
  • The company aims to factory-build reactors and deliver them as plug-in power systems rather than requiring customers to construct reactor facilities.

💡 Business ideas

Deploy approximately 1-megawatt transportable microreactors wherever reliable off-grid power is needed.06:29

Provide compact nuclear power units that fit in a few parking spaces, operate for 5 years, and can be removed when the customer no longer needs them.

For
Businesses, data centers, cities, national-security users, and operators in remote or off-grid locations.
Solves
Aging grid infrastructure, unreliable electricity, site-construction uncertainty, and the lack of power in locations without grid access.
Validate by
Test the commercial prototype at Idaho National Laboratory, including a full-power test above 700° C for 150 continuous hours.
  • Data centers
  • Small cities
  • Remote national-security deployments
  • Space missions

🏗️ Business models

Factory-built transportable nuclear power05:19

Build standardized microreactors in a factory, deploy them where customers need power, and handle refueling and nuclear-related responsibilities centrally.

  1. Manufacture the reactor in a controlled factory environment.
  2. Transport it by land, air, or sea to the customer.
  3. Connect it to provide power without requiring a customer-built reactor facility.
  4. Return the reactor to Radiant's factory site for refueling after use.
  • Kidos microreactor
  • Power for data centers
  • Power for small cities
  • Rapidly deployed power for AI and drones

💰 Monetization

Commercial sale or deployment of nuclear power reactors 10:38

Radiant describes itself as a company that needs to make money to sustain and expand its mission, centered on producing commercial reactors.

  • Mass-produced Kidos reactors

📣 Marketing

Sales

  • Offer customers power without requiring them to manage reactor construction, interconnection, refueling, or waste on site.
  • Build trust through partnerships and competitive selection for testing facilities.

Branding

  • Position Radiant around prosperity, affordable power, energy independence, and civilization-scale ambitions.
  • Use the Kidos reactor as a familiar alternative to a diesel generator.

Distribution

  • Transport reactors by land, air, and sea.
  • Deliver reactors to locations that lack grid access.

Customer acquisition

  • Design the product around customer preferences, including mobility and removing on-site nuclear responsibilities.
  • Reduce customer friction by delivering a reactor that can be connected and used with minimal site work.
  • Demonstrate the technology publicly through a full-power test.

🧭 Frameworks

Factory-built nuclear deployment07:25
  1. Move reactor construction from customer sites into a factory.
  2. Standardize production to control costs and reduce uncertainty.
  3. Transport the completed reactor to the customer.
  4. Provide power with minimal on-site construction.
  5. Return the reactor for refueling and nuclear-waste handling.

📊 Numbers mentioned

Costs

  • Nuclear regulation made reactors too expensive, according to one participant.
  • Factory production is intended to reduce uncertainty in customer costs and on-site activities.

Growth

  • 52 nuclear reactors were built at Idaho National Laboratory over a 21-year span.
  • The last of those reactors was built in 1977.
  • About 45% of Americans experienced one outage in the last year.
  • The Kidos reactor is designed to provide power for 5 years.
  • One Kidos unit is approximately 1 megawatt.
  • Four Kidos reactors could power a small city.
  • Radiant plans to test its prototype in 2026.
  • The test system is designed to exceed 700° C and run continuously for 150 hours.
  • Radiant began discussions about testing at the dome with approximately 20 employees.

⚖️ Advantages, risks & lessons

Advantages

  • Transportability
  • 5 years of operation before refueling
  • Higher power output than a diesel generator
  • Reduced customer construction and interconnection burdens
  • Centralized refueling and nuclear-waste handling
  • Potential use in off-grid, remote, national-security, and space applications
  • Factory production can reduce on-site cost uncertainty

Risks

  • Nuclear safety failures could put customers and Radiant's future at risk.
  • Nuclear regulation and public perceptions have historically increased costs and slowed development.
  • Factory production shifts uncertainty toward building and operating the manufacturing facility.
  • Customers may be reluctant to be the first to deploy a new commercial microreactor.

Lessons

  • Nuclear products should be designed around customer needs and friction rather than around traditional reactor construction.
  • Factory production can make complex infrastructure more standardized and deployable.
  • Commercial success requires both safe engineering and the ability to make money.
  • Demonstrating a technology publicly can help establish confidence in a new category.

💬 Quotes

We want to be doing is building reactors, not reactor buildings.

Captures Radiant's central product and deployment philosophy.04:49

You have to bring the grid with you in a box.

Summarizes the value proposition for rapidly deployed off-grid power.07:04

It shows up, it plugs in, you get power.

Expresses the intended low-friction customer experience.07:33

👤 People & companies

Doug

Radiant team member who designs machines and systems, including the Kidos reactor.

02:19
Radiant

Nuclear energy company developing mass-produced, transportable Kidos microreactors.

00:34
SpaceX

Company where Radiant's founder worked for about 12 years and worked on the Mars challenge.

03:49
Idaho National Laboratory

National laboratory where 52 nuclear reactors were built over a 21-year span and where Radiant plans to test its prototype.

01:27
ENL

Organization described as Radiant's testing and facility-development partner for the dome test campaign.

09:18