Making the largest nuclear sites in the world to create industrial electricity, heat, and carbon neutral synthetic fuels from thin air.

El Segundo, CA
Valar Atomics has raised $1.2B to build the world’s first vertically integrated nuclear company.
Announcing Valar Atomics' $1B series B led by Sequoia, with Valor Equity Partners, Atreides, Point72, Conviction, and others. Alongside the $1B equity, we have closed a $200m credit facility led by Erebor and JPM. I'm excited to welcome Shaun Maguire from Sequoia to our board.
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Excited to welcome another legend to the Valar Atomics executive team! Andrew Lech has spent the last decade building software teams at SpaceX and Blue Origin, building the operating system that the most hardcore of hard tech companies run on. Come join his team at Valar!
I’m excited to share that I’ve joined @valaratomics as Head of Software. Building alongside people tackling some of the hardest engineering problems in the world has shaped how I think about great teams, ambitious missions, and what it means to truly build. A big reason I’m making this move is @isaiah_p_taylor and his vision for the future of nuclear energy. It aligns deeply with something I’ve believed for a long time: energy capacity is one of the fundamental constraints on humanity’s continued progress. If we want to build more, compute more, manufacture more, explore further, and raise the standard of living around the world, we need dramatically more abundant energy. I believe nuclear is the best path to getting there. At Valar, I’ll be building a team of exceptional software engineers, people who are builders at heart, who want ownership, move fast, and are excited to turn ambitious ideas into real systems. If the future of energy excites you as much as it excites us, DM me. We’re building.
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Two MASSIVE gets for the Valar exec team in the last week. Get in, we’re making energy 10x cheaper
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Valar Atomics retweeted
Congratulations to our customer, @valaratomics, on its announcement of new funding. Following its recent achievement of criticality with the Ward 250 #microreactor, this latest milestone reflects the growing momentum behind the company's vision for scalable, resilient clean energy solutions. Valar was one of Urenco's earliest #AdvancedFuels customers as we expanded our capabilities to support the emerging reactor technologies sector. We're proud to be strengthening our partnership and continuing to provide the fuel cycle services that will help enable its ambitious growth plans. More here: ow.ly/V4bO50Zyxzz #nuclear #energy #AdvancedReactors #innovation
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Is Valar Atomics too fast?
Valar has often been criticized for its fast pace. They say you can't go fast in nuclear... So I asked my friend Darren to sit down with three people who have half a century of experience in nuclear programs all over the world, and ask them a question: Are we going too fast?
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We've always said that we won't sell merch until we split an atom. But we went a step further. From now on you can only get Valar merch from the nuclear website, which is powered by a live reactor. Site will be up for another day or so and then operators are taking a break
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Valar Atomics retweeted
.@valaratomics just made history by becoming the first startup to power an NVIDIA Blackwell with a nuclear reactor. Watch the full conversation as @saranormous joins founder and CEO @isaiah_p_taylor at the Utah San Rafael Energy Lab, home to the Ward 250 microreactor.
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Today, Valar Atomics became the first nuclear startup to make electricity, and we did it by powering an NVIDIA Spark. This is the first meeting of advanced nuclear and AI; two technologies which will transform the next century. But that’s only the start of our collaboration.
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We also announced today that Valar Atomics and NVIDIA are collaborating on a 30MW closed loop end to end AI factory, which consumes no water from the local community. This is only possible when two technologies come together: waterless power generation and waterless AI cooling.
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Today’s historical milestone is the culmination of years of careful but rapid work from the Valar Atomics team. We’re so grateful and excited for this new partnership—and it’s only the beginning.
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Valar Atomics retweeted
Valar Atomics Inc., a California-based nuclear startup, generated power from an advanced reactor to run an Nvidia Corp. AI chip. While just a trickle of electricity was produced, it’s the first time a next-gen reactor has done so in the US. bloomberg.com/news/articles/…
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Valar Atomics retweeted
Valar CEO on Bloomberg Tech tomorrow
Valar Atomics Inc., a California-based nuclear startup, generated power from an advanced reactor to run an Nvidia Corp. AI chip. While just a trickle of electricity was produced, it’s the first time a next-gen reactor has done so in the US. bloomberg.com/news/articles/…
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Live from the Ward 250 nuclear site, Valar Atomics and NVIDIA present WATTS NEXT. Tune in now! nitter.net/i/broadcasts/1oKMvvERy…
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Stream will be starting at 12:30 Pacific / 3:30 Eastern. Tune in for a great show!
This Wednesday at 3PM ET, please join Valar Atomics and NVIDIA for a special livestream on the future of atomic energy and artificial intelligence.
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This Wednesday at 3PM ET, please join Valar Atomics and NVIDIA for a special livestream on the future of atomic energy and artificial intelligence.
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Stream will be starting at 12:30 Pacific / 3:30 Eastern. Tune in for a great show!
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Valar Atomics retweeted
excited to announce my new one-day promotion at @valaratomics: the Watts Next pre-show host. we will be interviewing guests and valar employees - drop your burning questions below🔥⬇️:
This Wednesday at 3PM ET, please join Valar Atomics and NVIDIA for a special livestream on the future of atomic energy and artificial intelligence.
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Valar Atomics retweeted
Delivering new capacity safely, ahead of schedule and on budget is a testament to the expertise and dedication behind our operations. Congratulations to @urencousa on this important step forward, which helps strengthen the nuclear fuel supply chain in North America and supports economic development as global demand from US utilities continues to grow. #nuclear #energy #EnrichedUranium
We’ve installed our 5th new cascade ahead of schedule and on budget. ✅ On track for 700K SWU of new capacity by 2027 ✅ Supports U.S. #EnergySecurity ✅ Path to 7M+ SWU over the next decade Delivering real progress for the U.S. nuclear fuel supply. 🔗 ow.ly/3CYr50ZijPz
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Valar Atomics retweeted
BREAKING: @valaratomics has begun a loss-of-forced-cooling test on its Ward 250 nuclear reactor, shutting off all powered cooling and simulating a total electrical failure. The plant has been fully de-energized, and all electrical systems are offline. Valar will monitor the reactor over the next several days as it relies solely on passive systems to remove decay heat, testing one of the most critical failure modes in nuclear power.
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