Why Silicon Valley is so hot on nuclear energy and what it means for the industry
The Vogtle nuclear power plant is located in Burke County, near Waynesboro, Georgia in USA. Each of the two existing units have a Westinghouse pressurized water reactor (PWR), with a General Electric turbine and electric generator, producing approximately 2,400 MW of electricity. Two Westinghouse made AP 1000 reactors are under construction here.
Pallava Bagla | Corbis News | Getty Images
Venture capitalists in Silicon Valley and other tech hubs are investing money in nuclear energy for the first time in history. That’s changing its trajectory and pace of innovation.
“There’s not been a resurgence of nuclear power, ever, since its heyday in the late 1970s,” Ray Rothrock, a longtime venture capitalist who has personal investments in 10 nuclear startups, told CNBC.
Now, that’s changing. “I have never seen this kind of investment before. Ever.”
Jacob DeWitte, CEO of micro-reactor startup Oklo, says the landscape has changed dramatically since he started raising money in 2014, when he was a part of the Y Combinator startup incubator.
“More investors are interested, more investors are excited by the space, and they’re getting smarter to do the diligence and know what to do here — which is good,” DeWitte told CNBC.
This surge of private investment will be a positive for the industry, agrees John Parsons, an economist and lecturer at MIT.
“I think having fresh perspectives is really good,” Parsons told CNBC. Nuclear energy is “a very complex science, and it’s been supported by the federal government and at these national labs. And so that’s a very small circle of people. And when you broaden that circle, you get a lot of new minds, different thinking, a variety of experiments.”
In any industry, there can be a “groupthink” or “narrowness” in the way things are done over time, Parsons said. With private investment in the space, “there will be out-of-the-box thinking,” he said. “Maybe that out-of-the-box thinking doesn’t produce anything useful. Maybe it turns out that the old designs are the best. But I think it’s really wonderful to have the variety of takes.”
Not everyone is so optimistic that the recent influx of venture dollars will lead to progress.
“Investors have often invested in stupid things that didn’t work,” Naomi Oreskes, a professor of the history of science at Harvard University, told CNBC. “Because the reality is that in a 75-year history of this technology, it has never been profitable in a market-based system.” If investors are putting money into nuclear now, that’s because they think they can make money, and “I can only think they believe they will make money because they think that there’s a big opportunity to have the federal government pick up a big part of the tab,” Oreskes said.
Pitchbook’s private investment data for nuclear technology data includes both fusion and fission.
Chart courtesy Pitchbook.
Nuclear investment by the numbers
From 2015 to 2021, total venture capital deal flow in the United States increased 54% in terms of deals closed and 294% by dollar value, according to data compiled by private capital market research firm Pitchbook for CNBC. In that same time, climate investing deal flow in the United States jumped by 214% in terms of volume and 1,348% by dollar value.
In the nuclear space, investment rose even faster — 325% by volume and 3,642% by dollar value, according to Pitchbook.
Some of the rapid pace of increase in investment in the nuclear sector is explained by its starting point — virtually zero.
“This is still pretty small compared to the private investments in renewables,” like wind and solar, for example, said David Schlissel, director of resource planning analysis at the Institute for Energy Economics and Financial Analysis, a market research firm.
The venture market slowed overall in 2022, and nuclear investment is no exception. Concerns about the war in Ukraine, inflation, a wave of layoffs and murmurs of a recession have made investors nervous in the public markets and private alike.
Pitchbook includes companies developing technologies to mitigate or adapt to climate change in this category. Examples include renewable energy generation, long duration energy storage, the electrification of transportation, agricultural innovations, industrial process improvements, and mining technologies.
Chart courtesy Pitchbook
“At the beginning of the year, we were looking at a much different financial paradigm for nuclear startups seeking funding. Now, following a war, and inflationary related forces, the fundraising market is just not what it was earlier and that is challenging for everyone seeking funding and support, nuclear or otherwise,” Brett Rampal, a nuclear energy expert who evaluates investment opportunities and consults for nuclear startups, told CNBC.
More than $300 billion poured into the venture capital industry in 2021. Rothrock expects to see more like $160 billion in 2022.
“I’m sure that some funds that pull back may never come back,” Rothrock said. But most investors who are putting money into a nuclear company understands that it will not be a quick investment, Rothrock told CNBC. “Entrepreneurs and investors at the level we are talking for nuclear are playing the long game, they have to. These projects will take time to mature and to generate real cash flows.”
Also, the Inflation Reduction Act that President Joe Biden signed into law in August, which includes $369 billion in funding to help combat climate change, has given nuclear investors a very significant positive signal, Rampal told CNBC.
“The IRA investment and production tax credits are not nuclear specific credits, they’re clean energy credits that nuclear is now considered a part of, and that sends a real important message to people and investors that would consider this space,” Rampal said. Similarly important, the European Union voted in July to keep some specific uses of nuclear energy (and natural gas) in its taxonomy of sustainable sources of energy in some circumstances, according to Rampal.
Total venture capital deal activity, according to Pitchbook data, for the last five years.
Chart courtesy Pitchbook.
The VC approach to nuclear
The nuclear power industry in the United States launched as a government project after the U.S. built the first atomic bombs during World War II. In 1951, a nuclear reactor produced electricity for the first time in Idaho at the National Reactor Testing Station, which would become the Idaho National Laboratory.
In the 1960s and 1970s, large conglomerates constructed big nuclear power plants, and those projects often ran over budget. “As a consequence, most of the utilities that undertook nuclear projects suffered ratings downgrades—sometimes several downgrades—during the construction phase,” according to a 2011 report from the Congressional Budget Office. Also, the Three Mile Island accident in 1979 raised public fears about safety and put a damper on construction.
Nuclear power generation in the United States peaked in 2012 with 104 operating reactors, according to the U.S. Energy Information Administration.
However, in recent years, private investors and venture capitalists have been putting money into nuclear startups, driven by a newfound sense of urgency to respond to climate change, as nuclear energy releases no greenhouse gases. There’s also the allure of funding underdog companies with huge upside.
The venture capital model is based on big bets — venture capitalists spread their money across many companies. Most are expected to fail or maybe break even, but if one or two companies get enormous, they more than cover the cost of all those losses. This is the investing model that built Silicon Valley stalwarts like Apple, Google and Tesla.
Some venture capitalists are especially excited about fusion. It’s the type of nuclear energy that powers stars, and it generates no long-lasting radioactive waste — but so far, it’s proven fiendishly difficult to create a lasting fusion reaction on Earth and impossible to generate enough energy for commercial generation.
“It’s far better than nuclear fission,” investor Vinod Khosla told CNBC in October. “It’s far better than coal and fossil fuels for sure. But it’s not ready. And we need to get it ready and build it.”
Khosla isn’t the only one. The private fusion industry has seen almost $5 billion in investment, according to the Fusion Industry Association, and more than half of that has been since since the second quarter of 2021, Andrew Holland, CEO of the association, told CNBC.
Installation of one of the giant 300-tonne magnets that will be used to confine the fusion reaction during the construction of the International Thermonuclear Experimental Reactor (ITER) on the Cadarache site on September 15, 2021.
Jean-marie Hosatte | Gamma-rapho | Getty Images
Others are excited about new advances in nuclear fission, the more traditional type of nuclear power based on breaking atomic nuclei apart, like DCVC founder Zachary Bogue, who invested in micro-nuclear reactor company Oklo.
“Advanced nuclear fission is a quintessential deep-tech venture capital problem,” Bogue told CNBC in September. There is technical and regulatory risk, but if those problems are solved, “there are just massive-scale returns … all of those elements are a perfect recipe for venture capital.”
While these bets seem expensive and risky compared with venture capital’s recent focus on software and consumer tech, they’ll still bring a faster and more agile approach than the old-line nuclear industry.
Take micro-reactors.
“These are going to be very expensive at first. But the goal is to find something that is a product that’s much more flexible, can go on to the grid in many more different places and serve different functions, and go off grid also,” explained MIT’s Parsons.
Similarly, fusion startups say they will generate energy much faster than government research projects like ITER, which has already been in progress since 2007.
This quick-turn approach to investment is spurring experimentation. New generations of nuclear reactors will have different sizes, different coolants and different fuels, explained Matt Crozat, senior director of policy development at the Nuclear Energy Institute. Some reactors are being designed for companies or communities in isolated areas, for example. Others are being made to operate at high temperatures for industrial processes, Crozat told CNBC.
“It really is expanding the range of what nuclear can mean,” Crozat said. Many won’t succeed, but time and the market will figure out what’s needed and what’s possible, he said.
Because venture investors are hungry for returns, this also spurs nuclear startups to chase interim revenue streams as they’re getting their big-bet technology up and running.
For example, Bill Gates‘ nuclear innovation company TerraPower is working on a demonstration of its advanced reactor in Wyoming in collaboration with the U.S. Department of Energy, but in the meantime is using its capacity to produce isotopes that are also used in medical research and treatments. Advanced nuclear company Kairos Power is developing the capacity to produce salt for molten salt reactors, both for itself and to sell to other companies.
‘A long history of broken promises’
But critics say venture capitalists are ignoring the troubled history of nuclear power as a business.
“Investors have forgotten or are ignoring the lessons from earlier generations of nuclear plants which cost 2 to 3 times as much to build and took years longer than was promised by the vendors,” Schlissel told CNBC. For instance, a project to put two new reactors on the Vogtle power plant in Georgia was originally estimated to be $14 billion and ended up costing more than $34 billion and taking six years longer to complete than expected, he said.
15 November 2022, Egypt, Scharm El Scheich: A nuclear symbol is displayed at a pavilion of the International Atomic Energy Agency IAEA at the UN Climate Summit COP27. Photo: Christophe Gateau/dpa
Picture Alliance | Picture Alliance | Getty Images
Harvard’s Oreskes says the nuclear industry is a “technology with a long history of broken promises,” and she is skeptical of the sudden investor interest.
“If you were my daughter, and you had a boyfriend that had made repeated promises to you over months, years, decades, constantly breaking them, I would say, ‘Do you really want to be with this guy?'”
She’s not categorically anti-nuclear, and supports the continued operation of nuclear power plants that already exist. But she’s particularly skeptical of fusion, which has been promised to be “just around the corner” for decades, and says this new round of investments in fusion “doesn’t pass the laugh test.”
Ultimately, the new crop of nuclear startups has to figure out how to create nuclear energy in a cost-competitive way, or nothing else matters, says Rothrock.
“More money means more startups and to me that means more shots on goal (improving odds of success),” he told CNBC.
“The issue in nuclear is economics. Plants are complicated and take a while to build. Some of these new startups are tackling those issues making them more simple and thus cheaper. No one will buy an expensive power plant, especially a nuclear plant. Economics drives it all.”
Environment
‘Bitcoin Family’ hides crypto codes etched onto metal cards on four continents after recent kidnappings
The Taihuttus on a ski trip to Sierra Nevada in southern Spain. They sold everything they owned in 2017 to bet on bitcoin — and now travel full-time as a family of five.
Didi Taihuttu
A wave of high-profile kidnappings targeting cryptocurrency executives has rattled the industry — and prompted a quiet security revolution among some of its most visible evangelists.
Didi Taihuttu, patriarch of the so-called “Bitcoin Family,” said he overhauled the family’s entire security setup after a string of threats.
The Taihuttus — who sold everything they owned in 2017, from their house to their shoes, to go all-in on bitcoin when it was trading around $900 — have long lived on the outer edge of crypto ideology. They travel full-time with their three daughters and remain entirely unbanked.
Over the past eight months, he said, the family ditched hardware wallets in favor of a hybrid system: Part analog, part digital, with seed phrases encrypted, split, and stored either through blockchain-based encryption services or hidden across four continents.
“We have changed everything,” Taihuttu told CNBC on a call from Phuket, Thailand. “Even if someone held me at gunpoint, I can’t give them more than what’s on my wallet on my phone. And that’s not a lot.”
CNBC first reported on the family’s unconventional storage system in 2022, when Taihuttu described hiding hardware wallets across multiple continents — in places ranging from rental apartments in Europe to self-storage units in South America.
The Taihuttu family dressed up for Halloween in Phuket, Thailand, where they recently moved homes after receiving disturbing messages pinpointing their location from YouTube videos.
Didi Taihuttu
As physical attacks on crypto holders become more frequent, even they are rethinking their exposure.
This week, Moroccan police arrested a 24-year-old suspected of orchestrating a series of brutal kidnappings targeting crypto executives.
One victim, the father of a crypto millionaire, was allegedly held for days in a house south of Paris — and reportedly had a finger severed during the ordeal.
In a separate case earlier this year, a co-founder of French wallet firm Ledger and his wife were abducted from their home in central France in a ransom scheme that also targeted another Ledger executive.
Last month in New York, authorities said, a 28-year-old Italian tourist was kidnapped and tortured for 17 days in a Manhattan apartment by attackers trying to extract his bitcoin password — shocking him with wires, beating him with a gun, and strapping an Apple AirTag around his neck to track his movements.
The common thread: The pursuit of crypto credentials that enable instant, irreversible transfers of virtual assets.
“It is definitely frightening to see a lot of these kidnappings happen,” said JP Richardson, CEO of crypto wallet company Exodus. He urged users to take security into their own hands by choosing self-custody, storing larger sums on hardware wallets, and — for those holding significant assets — exploring multi-signature wallets, a setup typically used by institutions.
Richardson also recommended spreading funds across different wallet types and avoiding large balances in hot wallets to reduce risk without sacrificing flexibility.
That rising sense of vulnerability is fueling a new demand for physical protection with insurance firms now racing to offer kidnap and ransom (K&R) policies tailored to crypto holders.
But Taihuttu isn’t waiting for corporate solutions. He’s opted for complete decentralization — of not just his finances, but his personal risk profile.
As the family prepares to return to Europe from Thailand, safety has become a constant topic of conversation.
“We’ve been talking about it a lot as a family,” Taihuttu said. “My kids read the news, too — especially that story in France, where the daughter of a CEO was almost kidnapped on the street.”
Now, he said, his daughters are asking difficult questions: What if someone tries to kidnap us? What’s the plan?
One of the steel plates the Taihuttu family uses to store part of their bitcoin seed phrase. Didi etched it by hand using a hammer and letter punch — part of a decentralized storage system spread across four continents.
Didi Taihuttu
Though the girls carry only small amounts of crypto in their personal wallets, the family has decided to avoid France entirely.
“We got a little bit famous in a niche market — but that niche is becoming a really big market now,” Taihuttu said. “And I think we’ll see more and more of these robberies. So yeah, we’re definitely going to skip France.”
Even in Thailand, Taihuttu recently stopped posting travel updates and filming at home after receiving disturbing messages from strangers who claimed to have identified his location from YouTube vlogs.
“We stayed in a very beautiful house for six months — then I started getting emails from people who figured out which house it was. They warned me to be careful, told me not to leave my kids alone,” he said. “So we moved. And now we don’t film anything at all.”
“It’s a strange world at the moment,” he said. “So we’re taking our own precautions — and when it comes to wallets, we’re now completely hardware wallet-less. We don’t use any hardware wallets anymore.”
To throw off would-be attackers, Didi Taihuttu encrypts select words from each 24-word seed phrase — then splits the phrases into four sets of six and hides them around the world.
Didi Taihuttu
The family’s new system involves splitting a single 24-word bitcoin seed phrase — the cryptographic key that unlocks access to their crypto holdings — into four sets of six words, each stored in a different geographic location. Some are kept digitally through blockchain-based encryption platforms, while others are etched by hand into fireproof steel plates using a hammer and letter punch, then hidden in physical locations across four continents.
“Even if someone finds 18 of the 24 words, they can’t do anything,” Taihuttu explained.
On top of that, he’s added a layer of personal encryption, swapping out select words to throw off would-be attackers. The method is simple, but effective.
“You only need to remember which ones you changed,” he said.
Part of the reason for ditching hardware wallets, Taihuttu said, was a growing mistrust of third-party devices. Concerns about backdoors and remote access features — including a controversial update by Ledger in 2023 — prompted the family to abandon physical hardware altogether in favor of encrypted paper and steel backups.
While the family still holds some crypto in “hot” wallets — for daily spending or to run their algorithmic trading strategy — those funds are protected by multi-signature approvals, which require multiple parties to sign off before a transaction can be executed.
The Taihuttus use Safe — formerly Gnosis Safe — for ether and other altcoins, and similarly layered setups for bitcoin stored on centralized platforms like Bybit.
Didi Taihuttu during a recent visit to Sierra Nevada, Spain. The family’s lifestyle — unbanked, nomadic, and all-in on bitcoin — makes them outliers even in the crypto world.
Didi Taihuttu
About 65% of the family’s crypto is locked in cold storage across four continents — a decentralized system Taihuttu prefers to centralized vaults like the Swiss Alps bunker used by Coinbase-owned Xapo. Those facilities may offer physical protection and inheritance services, but Taihuttu said they require too much trust.
“What happens if one of those companies goes bankrupt? Will I still have access?” he said. “You’re putting your capital back in someone else’s hands.”
Instead, Taihuttu holds his own keys — hidden across the globe. He can top up the wallets remotely with new deposits, but accessing them would require at least one international trip, depending on which fragments of the seed phrase are needed. The funds, he added, are intended as a long-term pension to be accessed only if bitcoin hits $1 million — a milestone he’s targeting for 2033.
The shift toward multiparty protections extends beyond just multi-signature. Multi-party computation, or MPC, is gaining traction as a more advanced security model.
Didi, Romaine, and their three daughters live largely off-grid, managing crypto through decentralized exchanges, algorithmic trading bots, and a globally distributed cold storage system.
Didi Taihuttu
Instead of storing private keys in one place — a vulnerability known as a “single point of compromise” — MPC splits a key into encrypted shares distributed across multiple parties. Transactions can only go through when a threshold number of those parties approve, sharply reducing the risk of theft or unauthorized access.
Multi-signature wallets require several parties to approve a transaction. MPC takes that further by cryptographically splitting the private key itself, ensuring that no single individual ever holds the full key — not even their own complete share.
The shift comes amid renewed scrutiny of centralized crypto platforms like Coinbase, which recently disclosed a data breach affecting tens of thousands of customers.
Taihuttu, for his part, says 80% of his trading now happens on decentralized exchanges like Apex — a peer-to-peer platform that allows users to set buy and sell orders without relinquishing custody of their funds, marking a return to crypto’s original ethos.
While he declined to reveal his total holdings, Taihuttu did share his goal for the current bull cycle: a $100 million net worth, with 60% still held in bitcoin. The rest is a mix of ether, layer-1 tokens like solana, link, sui, and a growing number of AI and education-focused startups — including his own platform offering blockchain and life-skills courses for kids.
Lately, he’s also considering stepping back from the spotlight.
“It’s really my passion to create content. It’s really what I love to do every day,” he said. “But if it’s not safe anymore for my daughters … I really need to think about them.”
WATCH: ‘Bitcoin Family’ tracks moon cycles to make crypto investment decisions
Tesla’s head of Optimus humanoid robot, Milan Kovac, announced that he is leaving the automaker after 9 years.
It leaves just as CEO Elon Musk claimed that the humanoid robot is going to make Tesla a”$25 trillion company.”
Electrek first reported on Tesla hiring Kovac back in 2016 to work on the early Autopilot program. At the time, we noted that the young engineer had an interesting background in machine learning.
He quickly rose through the ranks and ended up leading Autopilot software engineering from 2019 to 2022.
In 2022, he started working on Tesla’s Optimus humanoid robot program.
Late last year, he was promoted to Vice President in charge of the complete Optimus program, as CEO Elon Musk began to tout the program as critical to Tesla’s future.
Musk claimed that Optimus could generate $10 trillion in revenue per year and make Tesla a $25 trillion company. These claims are largely unsubstantiated as the humanoid robot market is still in its infancy.
Most market research firms currently estimate the size of the humanoid robot market to be in the low single-digit billions of dollars, with growth projections through 2032 ranging from $15 billion to $80 billion.
That would represent impressive growth, but nowhere near what Musk is touting to investors.
Today, Kovac announced that he is leaving Tesla for personal reasons:
This week, I’ve had to make the most difficult decision of my life and will be moving out of my position. I’ve been far away from home for too long, and will need to spend more time with family abroad. I want to make it clear that this is the only reason, and has absolutely nothing to do with anything else. My support for Elon Musk and the team is ironclad – Tesla team forever.
Kovac has been regarded as one of the top new technical executives at Tesla, which has seen a significant talent exodus of top engineers.
The company has made progress with the Optimus program over the last year. Still, many have been skeptical, as Tesla has been less than forthcoming about using teleoperation in previous demonstrations.
Kovac is not the only Optimus engineer to leave Tesla recently.
Figure, another company developing humanoid robots, has recently poached Zackary Bernholtz, a 7-year veteran at Tesla and most recently a Staff Technical Program Manager.
Electrek’s Take
This is a significant loss for Tesla. Kovac was one of Musk’s top technical guys and literally the head of the program he claimed would bring Tesla to the next level – although I think most people have been understandably skeptical about these claims.
I’ve been bullish on humanoid robots, and I could see Tesla being a player in the field, but it’s nowhere near the opportunity that Musk is claiming, and there’s also plenty of competition with no clear evidence that Tesla has any significant lead, if any.
In China, Unitree has been making impressive progress, and it is already selling a humanoid robot.
In the US, Figure has also been making a lot of progress lately:
I think it’s a smart space to invest in for manufacturing companies like Tesla, but there’s going to be a lot of competition.
It’s too early to say who will come out on top.
As for Kovac leaving, I’m sure his personal reason is correct. However, we often see people claim that and then they quickly turn up at another company.
If he believed that his product would soon become a multi-trillion-dollar opportunity, I doubt he would be leaving, but you never know. 9 years at Tesla is some hard work and it’s impressive for anyone. Congrats.
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