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Tag: Small Modular Reactors

  • NuScale’s 7% Give-Back Shows AI’s Power Question Is Who Pays for the Grid

    NuScale’s 7% Give-Back Shows AI’s Power Question Is Who Pays for the Grid

    TL;DR · 30-second read

    The Short Version

    Lawmakers are moving a bill that would make large data centers pay the full cost of the power lines and grid upgrades they need, rather than spreading that cost across everyone’s electricity bills.

    Shares of small nuclear companies jumped when the bill advanced, then handed the gains straight back. NuScale Power finished down about 7 percent, Oklo about 5 percent and Centrus Energy about 3 percent.

    Why it matters: these companies pay for new reactors and fuel plants largely by selling shares. When the share price swings on a vote, so does the money available to build.

    Shares of small-reactor and nuclear fuel companies rallied and then reversed around a House bill that would require data centers to cover the power costs their own loads create. According to reporting on the session that followed, NuScale Power fell about 7%, Oklo about 5% and Centrus Energy about 3%, giving back the gains the group had made when the measure advanced.

    The move landed in a week in which two of the three companies were actively raising money against their share prices. Oklo disclosed in an 8-K filed September 11 that it had entered an at-the-market equity program of up to $1 billion, and Centrus disclosed in an 8-K filed the same day that it had priced a $500 million offering of stock and warrants on September 9. Centrus followed on September 17 with an 8-K reporting a multi-year high-assay low-enriched uranium supply contract with Antares Nuclear.

    Executive Summary

    The underlying policy question is narrow and consequential: when a data center of several hundred megawatts connects to the grid, who pays for the transmission upgrades, generation reserves and network reinforcement that load requires — the data center, or the utility’s general ratepayer base? A House bill assigning those costs to the load itself reads, at first glance, as a tailwind for dedicated on-site generation, including small modular reactors, because it raises the cost of taking power from the public grid.

    The market tested that logic and then partly withdrew it inside a session. That is worth taking seriously rather than dismissing as noise, because the same rule that makes grid power more expensive also makes the buyers of small-reactor power more expensive to operate — and a bill that has cleared one chamber is not a tariff, a rule or a contract.

    What makes the swing operationally relevant is that valuation in this sector is not a scoreboard. It is working capital. Oklo’s $1 billion at-the-market program converts share price directly into build funding, and roughly $2 billion of Centrus’s potential proceeds sits in warrants that only pay out if the stock trades well above where the September offering priced.

    Cost Allocation Is the Real Variable Behind AI’s Power Demand

    Interconnecting a large load is not simply a matter of running a wire. A multi-hundred-megawatt data center — a megawatt is roughly the steady draw of several hundred homes — typically triggers network upgrades, new substations and reserve capacity that cost hundreds of millions of dollars and take years to build. The question of who pays for that has, until recently, been handled case by case by state regulators and grid operators, often with a meaningful share landing in the rates everyone pays. A federal rule assigning those costs to the load that caused them changes the arithmetic of every site selection decision in the industry.

    That is why the initial read was bullish for nuclear developers. If grid-delivered power carries the full loaded cost of the upgrades it requires, plus the multi-year queue wait, then dedicated generation sited at or near the campus stops competing against the cheap headline price of grid power and starts competing against the true all-in cost. Small modular reactors — factory-built units in the tens to few hundreds of megawatts, designed to be sited next to the customer — are positioned precisely for that comparison.

    The give-back is the part worth explaining, because it is where the simple version of the thesis breaks. NuScale’s roughly 7% decline, Oklo’s 5% and Centrus’s 3% came without any company-specific bad news attached to them. The plainest reading is that the same rule cuts in two directions at once: it raises the cost of grid supply, but it also raises the total cost of building and operating the data centers that are the presumed offtakers for on-site nuclear. A hyperscaler facing a larger interconnection bill has less budget, not more, and may respond by siting fewer campuses rather than buying more reactors. Whichever way that nets out, the affected parties are the same: data center developers pricing new sites, utilities and their regulators deciding what the general ratepayer absorbs, and the reactor and fuel companies whose demand case is built on the gap between those two answers.

    A Bill That Passed One Chamber Is Not a Tariff

    There is a second reason a policy rally can evaporate in a session. Legislation of this kind does not usually land as a self-executing rule. Cost responsibility for large loads sits across federal and state jurisdictions, and translating a statutory instruction into actual large-load tariffs, deposit and collateral requirements, minimum-take terms and network upgrade cost assignments is a rulemaking-and-litigation process measured in years — comfortably longer than the development timeline of most of the reactors being valued against it.

    None of that makes the bill unimportant. It means the market is pricing a direction of travel, not a set of terms, and direction-of-travel trades are exactly the ones that reverse when the second-order effects get counted. For readers evaluating these companies, the useful discipline is to ask what changed in contracted capacity, licensing position or customer commitments on the day — and in this case, for the reactor developers, nothing did.

    When Share Price Is the Construction Budget

    Here is where a one-session swing stops being abstract. Pre-revenue nuclear developers and capacity-expanding fuel suppliers fund themselves substantially by issuing equity, which makes the share price an input to the build, not a commentary on it.

    Oklo’s 8-K filed September 11 discloses an equity distribution agreement with ten sales agents — Goldman Sachs, BofA Securities, Citigroup, J.P. Morgan, Morgan Stanley, Barclays, Cantor Fitzgerald, Guggenheim, Canaccord Genuity and B. Riley — permitting up to $1 billion of Class A common stock to be sold at the market over time, at a commission of up to 1.5%, off a shelf registration declared effective December 4, 2025. An at-the-market program dispenses stock into the open market at prevailing prices at the company’s discretion; the dollar ceiling is fixed, so the number of shares required to reach it moves inversely with the price. A 5% lower share price means roughly 5% more dilution for the same construction dollar.

    Centrus shows the sharper version. Its September 11 filing and the accompanying release disclose an offering priced September 9 at a combined $199.64 per share of Class A common stock and accompanying warrants, comprising 500,000 shares, pre-funded warrants over 2,005,513 shares and common warrants over as many as 6,992,382 shares, for gross proceeds of approximately $500 million. The common warrants come in four series struck at $226.8625, $272.2350, $317.6075 and $362.9800 — between roughly 14% and 82% above the offering price — each series carrying an aggregate exercise price of about $500 million. That is roughly $2 billion of additional funding for domestic enrichment capacity that arrives only if the stock trades and holds well above where it priced, within tranches expiring between the second and fifth anniversaries of September 10, 2026. Policy-driven round trips of 3% to 7% do not decide that outcome on their own, but they are the increments that determine whether a strike price is reached, and they are the reason the grid cost-allocation debate has a direct line to how much enrichment and reactor capacity actually gets financed.

    The Part of the Chain That Isn’t Priced on Votes

    Centrus’s September 17 8-K and the attached release describe a different kind of event: a definitive multi-year contract to supply Antares Nuclear with high-assay low-enriched uranium — fuel enriched above the level used in conventional reactors, which most advanced designs require — with deliveries commencing before the end of the decade and prepayments from Antares to support expanded capacity. Prepayments are the operative detail. They are customer cash committed ahead of delivery, which is a materially firmer demand signal than a legislative headline.

    Two caveats keep this even-handed. First, the release positions the contract around defense and space missions: Antares, founded in 2023 and described as backed by over $600 million in funding, was selected for the U.S. Army’s Janus Program at Fort Bragg, the Air Force’s Advanced Nuclear Power for Installations program at Joint Base San Antonio and a Space Force award, with initial military deployments stated for 2028. It is not evidence of data center demand. Second, the contract’s value, volumes and prepayment amounts are not disclosed, so “adds another HALEU customer to the backlog” cannot yet be sized.

    Still, the contrast is the useful takeaway for anyone underwriting this sector. Centrus operates the American Centrifuge Plant at Piketon, Ohio, described in its release as the only licensed HALEU production facility in the western world, and is converting that position into binding orders with cash attached. That is a different asset class from a valuation that moves 3% on a chamber vote — and over time it is the one that determines whether AI-adjacent nuclear capacity gets built.

    Background

    The three companies sit at different points of the same chain. NuScale Power and Oklo are developers of small modular and advanced reactors, pre-revenue businesses whose value rests on licensing progress and future customer commitments. Centrus Energy is a fuel supplier, operating the American Centrifuge Plant in Piketon, Ohio, which its release describes as the only licensed high-assay low-enriched uranium production facility in the western world; the company says it has supplied more than 1,850 reactor years of fuel since 1998 and launched a multi-billion-dollar enrichment expansion last year.

    All three have been repriced repeatedly over the past two years by the same underlying story: data center electricity demand growing faster than grids can be upgraded, and hyperscale operators signing power agreements with nuclear suppliers to secure firm, carbon-free capacity. Because reactor and enrichment capacity takes years and large capital outlays to build, and because these companies fund much of that through equity issuance, policy headlines that move sentiment also move the practical cost of building.

    Sources

    Source: Nuclear Stocks Rally as House Bill Forces Data Centers to Cover Their Own Power Costs and NuScale Power Drops 7% as Nuclear Stocks Hand Back the Vote Rally; Oklo Falls 5%, Centrus Energy Slides 3% — coverage of the rally and reversal in small-reactor and nuclear fuel equities around a House bill on data center power cost responsibility.

    Primary sources: Oklo Inc., Form 8-K filed September 11, 2026 (equity distribution agreement, up to $1 billion at-the-market program); Centrus Energy Corp., Form 8-K filed September 17, 2026 (HALEU supply contract with Antares Nuclear); Centrus Energy, Exhibit 99.1: “Centrus and Antares Sign Multi-Year HALEU Supply Contract,” September 17, 2026; Centrus Energy Corp., Form 8-K filed September 11, 2026 (underwriting agreement, shares and warrants); Centrus Energy, Exhibit 99.1: “Centrus Announces Proposed Public Underwritten Offering of Class A Common Stock and Warrants”; Centrus Energy, Exhibit 99.2: “Centrus Announces Pricing of $500 Million Underwritten Public Offering of Class A Common Stock and Warrants”.

  • Everyone Watches Reactor Permits. AI’s Molten-Salt Bottleneck Is 99.99% Lithium-7

    Everyone Watches Reactor Permits. AI’s Molten-Salt Bottleneck Is 99.99% Lithium-7

    TL;DR · 30-second read

    The Short Version

    A batch of specially made salt just changed hands in Texas. The federal Department of Energy shipped it to Natura Resources, a company building a small nuclear reactor on a university campus in Abilene.

    The salt is the reactor’s coolant. Instead of water held under enormous pressure, this design runs on hot liquid salt — made from a rare, highly purified form of lithium that hardly anyone produces.

    Why care: Texas needs round-the-clock electricity for the giant computer warehouses that run artificial intelligence. Reactors like this are one proposed answer, and one of their hardest-to-source ingredients is now in hand.

    Natura Resources LLC announced on September 18 that it has received FLiBE salt — a fluoride mixture of lithium and beryllium used as a molten-salt reactor coolant — from the U.S. Department of Energy’s Oak Ridge National Laboratory, routed through Idaho National Laboratory. The material is destined for the MSR-1, a molten salt demonstration reactor the company is building at Abilene Christian University in Abilene, Texas.

    Natura said it won the salt through a competitive DOE solicitation facilitated by Idaho National Laboratory and issued in August 2025. The company said the salt contains 99.99% enriched lithium-7, an isotopic purity that suppresses the formation of tritium inside the coolant loop. Natura describes itself as privately owned, with more than $120 million in private funding and a $120 million commitment from the State of Texas, and holds what it says is the first Nuclear Regulatory Commission construction permit issued for a liquid-fueled reactor.

    Executive Summary

    The headline event is a shipment, not a groundbreaking — but shipments are where advanced nuclear schedules actually slip. Molten salt reactors substitute a liquid salt for the pressurized water used in conventional plants, which is what lets them run hot and near atmospheric pressure. That coolant is not a commodity. Getting it right requires lithium enriched to a specific isotope, lithium-7, at a purity Natura puts at 99.99%.

    The reason the purity matters is operational rather than ceremonial. Natural lithium contains a meaningful fraction of lithium-6, which absorbs neutrons and produces tritium — a radioactive hydrogen isotope that migrates readily through hot metal and creates containment, monitoring and worker-protection burdens for the life of the plant. Stripping the lithium-6 out up front converts a permanent operating problem into a one-time procurement problem. That procurement, on Natura’s own account, was resolved by winning a federal allocation rather than placing an order.

    For the Texas power market the relevance is indirect but real. Data center load growth in the state has made any firm, siteable generation valuable, and advanced nuclear is one of the options developers keep on the table. The MSR-1 is a demonstration unit intended to generate data for Natura’s commercial reactors; the company disclosed no capacity rating, no in-service date and no customer alongside the salt delivery.

    The Scarce Input Is the Coolant, Not the Paperwork

    Advanced nuclear coverage tends to track licensing milestones, because licenses are public, dated and easy to compare. Natura has one of the notable ones — it says it holds the first NRC construction permit for a liquid-fueled reactor. But a permit authorizes construction; it does not conjure the materials the design requires. This week’s event is the quieter constraint clearing, and the structure of the transaction tells you how tight it is.

    Consider what Natura describes: salt held at a national laboratory, released through a competitive solicitation issued in August 2025, facilitated by a second national laboratory, and delivered more than a year later. That is the procurement pattern of an allocated stockpile, not a supply chain. Enriched lithium-7 at 99.99% is a Cold War-era product of isotope separation programs, and a developer that wins a tranche of it has removed a risk that competitors bidding on the same solicitation did not. Natura’s own framing — that the delivery secures “one of the most specialized inputs required” and reduces supply-chain risk — is an unusually direct admission that the material was a gating item.

    The downstream implication is the part that matters for anyone financing or contracting firm power. If the coolant for a first-of-a-kind unit has to come from a federal solicitation, then the question for every molten salt program is what happens at unit two, unit ten, and at commercial scale, when legacy inventory cannot cover the order book and someone has to build enrichment capacity. That is a multi-year industrial problem with its own permitting, capital and workforce constraints, and it sits upstream of every megawatt these designs promise. Developers, utilities and data center buyers evaluating molten salt timelines should be asking about lithium-7 supply with the same seriousness they ask about NRC dockets.

    Texas Is Buying Optionality on Firm Power

    Natura discloses a $120 million commitment from the State of Texas alongside more than $120 million in private funding. That pairing is the more revealing number in the release. Texas has watched data center interconnection requests pile up against a grid that must serve them on the hottest and coldest days, and firm generation — power that runs regardless of weather — is the scarce commodity. State money in a pre-commercial reactor developer is not an energy purchase; it is a call option on a technology that, if it works, can be sited near industrial load without a transmission build.

    What the announcement does not do is connect that option to load. The MSR-1 is a demonstration reactor on a university campus, and Natura says plainly that its purpose is to generate data for commercial reactors. No capacity figure, no offtake agreement and no data center customer appears anywhere in the disclosure. Readers evaluating this as an AI-power story should hold both facts: the material bottleneck is genuinely smaller today, and the distance between a campus demonstration unit and a contracted megawatt on an industrial site remains long.

    A 13,000-Hour Precedent Is Heritage, Not Qualification

    Natura leans on the Molten Salt Reactor Experiment, which ran at Oak Ridge from 1965 to 1969 and logged more than 13,000 operating hours demonstrating passive safety, high-temperature performance and fuel flexibility. The lineage is real, and receiving MSRE-era salt from the laboratory that ran the experiment makes for a legitimate through-line. It is also a reason the material exists at all.

    The analytical caution is that operating hours from the 1960s are evidence the physics works, not evidence that a modern commercial unit will license, build and run on schedule. The MSRE was a research reactor with no requirement to sell power, meet a modern regulatory framework, or hit a cost of capital. Sixty years of institutional memory attrition sits between that program and this one, which is precisely why demonstration units like the MSR-1 exist. The honest read of this week’s news is narrow and still meaningful: one specialized input is secured, one category of schedule risk is retired, and the rest of the program is still ahead of the company.

    Background

    Molten salt reactors are an old idea with a short operating record. The Molten Salt Reactor Experiment at Oak Ridge National Laboratory ran from 1965 to 1969 and accumulated more than 13,000 hours, establishing that a reactor could run with its fuel dissolved in circulating salt at high temperature and low pressure. The program ended without commercialization, and the technology sat largely dormant for decades while the industry standardized on pressurized and boiling water designs.

    Natura Resources LLC, based in Abilene, Texas, is one of the developers attempting to carry the concept into commercial service. It is privately owned, reports more than $120 million in private funding plus a $120 million commitment from the State of Texas, and says it holds the first NRC construction permit granted for a liquid-fueled reactor. Its first unit, the MSR-1, is under construction at Abilene Christian University and is intended to produce the operating data that commercial designs will be built on. Jordan Robison was named chief executive officer ahead of this phase of the program.

    Sources

    Source: Natura Receives Historic Molten Salt Reactor Coolant from Department of Energy — Natura Resources’ September 18, 2026 announcement that it received FLiBE salt from the Department of Energy’s Oak Ridge National Laboratory, via Idaho National Laboratory, for its MSR-1 demonstration reactor in Abilene, Texas.

  • A 13% Policy Rally Stretches Oklo’s $1B Share Program for AI Power

    A 13% Policy Rally Stretches Oklo’s $1B Share Program for AI Power

    TL;DR · 30-second read

    The Short Version

    Shares in two companies building small, factory-made nuclear reactors jumped on Thursday. Oklo rose about 13% and NuScale about 10%.

    The trigger was a vote in the US House of Representatives on how to power the huge computer warehouses behind artificial intelligence. The bill does not require anyone to use nuclear power.

    That gap matters. Oklo had just arranged to sell up to $1 billion of new stock to fund its reactors. A higher share price means it can raise that money while handing out fewer new shares.

    Shares of small modular reactor developers Oklo and NuScale Power rose sharply on Thursday after the U.S. House voted on legislation addressing electricity supply for data centers. Yahoo Finance and 24/7 Wall St. reported Oklo up 13% and NuScale up 10%. TechStock² put the gains at 11% and 9% and reported that the measure stops short of ordering the use of nuclear power. Other nuclear names, including NANO Nuclear Energy and fuel supplier Centrus Energy, also rose.

    The rally came one week after Oklo disclosed, in an 8-K filed September 11, an equity distribution agreement with ten banks. The agreement lets it sell up to $1 billion of Class A common stock “at the market,” meaning gradually and at prevailing share prices.

    Executive Summary

    The House vote gave nuclear equities a policy signal, not a purchase order. The bill as reported does not compel data centers or utilities to buy nuclear power. It does not fund a reactor. It does not change how quickly the Nuclear Regulatory Commission licenses one. Even so, investors marked up the whole small-reactor group in a single session. That shows how much of these companies’ value rests on expectations about Washington’s direction rather than on operating assets. Neither Oklo nor NuScale yet runs a commercial reactor in the United States.

    For Oklo, the timing turns a sentiment move into a financing variable. Its new at-the-market program sells shares at whatever the market is paying. A higher price lets the company raise the same dollars while issuing fewer shares, which means less dilution for existing holders. The company can also choose to raise more. For AI data-center developers hoping small reactors will eventually supply firm power, a well-funded developer matters. The capital to build is the first thing between a reactor design and a delivered megawatt.

    A Rally on a Signal, Not a Mandate

    The central fact of Thursday’s trade is the mismatch between the policy and the price move. The House measure concerns power for data centers, the warehouse-scale computing sites whose electricity demand has climbed with AI training and inference. The measure reportedly does not order that any of that power come from nuclear plants. Investors bid the sector up anyway. The best reading is that the market is pricing direction: Congress is treating data-center power as a legislative priority, and nuclear is the carbon-free, always-on source most often named alongside it.

    That is a reasonable thing to be optimistic about, but it is not a revenue event. Small modular reactors (SMRs) are nuclear units far smaller than conventional plants, designed to be built in factories and installed in modules. They still have to clear licensing, secure fuel, finance construction and sign binding power contracts before they produce anything a data center can buy. A vote that addresses none of those steps directly moved the stocks by roughly a tenth. That tells readers more about how these valuations are built than about how soon reactors will run.

    Why the Jump Matters Most to Oklo’s Share Sales

    Oklo’s September 11 8-K sets out the mechanism. Under the equity distribution agreement, ten banks, including Goldman Sachs, BofA Securities, Citigroup, J.P. Morgan and Morgan Stanley, can sell Class A shares for Oklo in ordinary market trades, block trades or negotiated deals. Sales happen “at market prices prevailing at the time of sale,” up to $1 billion in gross proceeds. Oklo sets a daily maximum and a minimum acceptable price, and pays commissions of up to 1.5%. On the full $1 billion, that would be up to $15 million.

    Because the price floats, the share price directly sets the cost of this capital to existing owners. Take any fixed dollar amount raised at a price 13% higher: it requires about 11.5% fewer new shares than it would have the day before (1 divided by 1.13). A policy-driven rally therefore does something concrete for Oklo that it does not do for a company without an open program. It cuts the dilution attached to funding reactor development, or lets Oklo raise more for the same dilution. The 8-K describes the shares as issued off a shelf registration declared effective in December 2025. That means Oklo can act on the higher price without a fresh registration process.

    Two caveats keep this honest. Oklo has not said whether it has sold any shares under the program or at what prices. And a price gain built on a signal can reverse as quickly as it came. The benefit is real only for sales made while the higher price holds. Existing shareholders are the other affected party. Every share sold dilutes them, whatever the price.

    A Basket Move, Not Company News

    The breadth of the rally points to sector sentiment rather than company-specific developments. NuScale filed no material report with the SEC in the days around the vote. NANO Nuclear Energy’s most recent 8-K, filed September 17, reports only routine results from its September 15 annual meeting: six directors re-elected and Withum ratified as auditor. Nothing in that filing concerns the House bill, customers or reactors. When developers at different stages, and a fuel supplier, rise together on the same day, the market is repricing the theme, not the individual businesses.

    For data-center developers and hyperscalers, the largest cloud operators, the practical lesson is to separate equity momentum from procurement reality. The gating items for nuclear-supplied AI capacity have not moved: licensed designs, fuel supply, construction financing and signed offtake agreements. Offtake agreements are long-term contracts to buy a plant’s output. A stronger share price can help with one of these, financing, and only for companies positioned to tap it.

    Background

    Oklo went public in 2024 through a merger with AltC Acquisition Corp., a blank-check company co-founded by Sam Altman. It is developing the Aurora, a compact fast reactor. Its first combined license application was denied by the Nuclear Regulatory Commission in 2022, and it has since been working back through licensing. NuScale Power’s design was the first small modular reactor design certified by the NRC. Its flagship Carbon Free Power Project with Utah municipal utilities was cancelled in 2023 after subscriptions fell short.

    Both companies have positioned themselves as future suppliers of firm, carbon-free electricity to data centers, whose power needs have grown quickly with AI workloads. Both remain pre-revenue on commercial reactor sales. That leaves their share prices sensitive to policy news, to financing conditions and to any sign that large power buyers will commit.

    Sources

    Source: Why Did Nuclear Stocks OKLO, SMR, NNE, LEU, XE Jump On Thursday? (Yahoo Finance): coverage of the nuclear-stock rally following the House data-center power vote. Also: Oklo Stock Rises 11%, NuScale Gains 9%; House Vote Stops Short of a Nuclear Order (TechStock²), Oklo Jumps 13%, NuScale Power Climbs 10% (Yahoo Finance) and Oklo Jumps 13%, NuScale Power Climbs 10% (24/7 Wall St.).

    Primary sources: Oklo Inc. Form 8-K filed September 11, 2026: $1 billion at-the-market equity distribution agreement; NANO Nuclear Energy Inc. Form 8-K filed September 17, 2026: results of 2026 annual meeting.

  • Oklo, X-Energy Join $200M Federal Push to Power AI Data Centers With Nuclear

    Oklo, X-Energy Join $200M Federal Push to Power AI Data Centers With Nuclear

    TL;DR · 30-second read

    The Short Version

    The American government is putting about $200 million into an effort to get a newer, smaller kind of nuclear power plant built faster, so it can run the giant computer warehouses behind artificial intelligence.

    Two young nuclear companies, Oklo and X-Energy, have joined Microsoft and Nvidia in the program. Their share prices jumped on the news.

    The catch: none of these newer reactor designs is running on a large scale in America yet. And $200 million is small next to the $17.5 billion in loans the government has offered for traditional big reactors.

    Stocktwits reported on July 21, 2026, citing an internal Department of Energy (DOE) document viewed by Bloomberg, that advanced nuclear developers Oklo Inc. (NYSE: OKLO) and X-Energy Inc. (XE) are joining a $200 million federal initiative to accelerate reactor deployment for AI data centers. The program builds on earlier partnerships that already include Microsoft and Nvidia, and allocates $60 million over three years to several DOE national laboratories and academic institutions, including the University of Texas at Austin.

    X-Energy shares rose as much as 12% in extended trading and Oklo as much as 9.9%. Both stocks were well down for the year at the time: Oklo by 41% and X-Energy by 27%. On September 11, Oklo filed an 8-K disclosing an at-the-market equity program that lets it sell up to $1 billion of new shares.

    Executive Summary

    The initiative targets three things that have kept advanced reactors off the grid: the time it takes to design a new plant, the time it takes to license it, and the time it takes to build it. It also aims to cut the number of staff future reactors need to operate. Those are the right bottlenecks to attack. First-of-a-kind nuclear projects tend to stall on engineering validation, regulatory review and construction execution, not on a lack of ideas.

    The scale is modest, though. At $200 million in total, with $60 million spread over three years to labs and universities, this is a program to reduce risk and speed up development. It does not pay for construction. It sits alongside a much larger federal instrument, a $17.5 billion loan program for 10 large conventional reactors, and a policy framework, the Ratepayer Protection Pledge, that pushes big tech companies to supply their own power.

    For data center operators and investors, the question is whether federal support can compress the nuclear timeline enough to matter for the current AI buildout. Oklo’s September move to line up as much as $1 billion in equity shows that most of the capital will still have to come from public markets.

    Two Hundred Million Dollars Buys Speed, Not Steel

    The initiative commits $60 million over three years to national laboratories and universities, an average of $20 million a year. That money pays for the work that sits upstream of construction: modeling, testing, materials and fuel data, and the technical evidence regulators need to approve a new design. Federal labs have a real comparative advantage here. They operate test facilities and hold expertise that a young reactor company would struggle to replicate privately.

    Compare it with the White House’s $17.5 billion loan program supporting 10 large commercial reactors. The two tools do different jobs. Loans lower the cost of financing designs that are already understood. The $200 million initiative tries to lower the engineering and licensing risk of designs that have not yet run commercially. Neither replaces the other, and neither alone gets a first advanced reactor built.

    The goal of reducing operational staffing matters more than it may sound. A nuclear plant’s ongoing costs include large security, operations and maintenance teams. If smaller advanced reactors could run with leaner crews while still meeting regulatory requirements, their economics for a single large customer, such as a data center campus, would improve.

    The AI Clock Versus the Nuclear Clock

    Data center demand is arriving now. The DOE projects that 300 gigawatts of new nuclear capacity will be needed by 2050 to keep pace. A gigawatt is roughly the output of one large conventional reactor. Yet commercial advanced reactors have not yet operated at scale in the United States. That gap between demand and deployment is the core tension this program is trying to resolve.

    Federal money can improve the speed and quality of work that feeds into licensing, but licenses are issued by the Nuclear Regulatory Commission, which is independent of the DOE. The initiative can shorten the path to a strong application. It cannot approve one. Construction timelines depend on supply chains, skilled labor and site-specific permitting that research funding does not directly touch.

    The frequently cited comparison with China deserves careful reading. China has 39 nuclear reactors under construction, according to Goldman Sachs data drawn from the World Nuclear Association. The Kobeissi Letter noted that the U.S. has no large commercial reactors under construction. Both figures describe large plants. Neither captures advanced reactor projects in design or licensing, so the comparison shows a gap in building conventional plants more than it measures the state of advanced nuclear.

    The Ratepayer Pledge Creates the Buyer

    Advanced nuclear developers need committed customers, and federal policy is steering tech companies toward becoming those customers. Under the Ratepayer Protection Pledge, Amazon, Google, Meta, Microsoft, OpenAI, Oracle and xAI committed to procure or build their own generation and to cover the cost of transmission grid upgrades. The goal is to shield households from rising electricity bills driven by data center growth.

    That shifts the economics. Hyperscalers, the handful of companies operating the largest cloud and AI data center fleets, now carry more direct responsibility for their power supply. A carbon-free source that runs around the clock, sited near a campus, is attractive in that framework. The companies that can deliver it on a credible timeline stand to benefit.

    Participation in a federal initiative is not a power purchase agreement, however. A power purchase agreement is a long-term contract to buy electricity at set terms, and it is what lenders and investors look for before funding a plant. Microsoft and Nvidia’s involvement signals interest from the demand side. Whether that turns into binding offtake for Oklo or X-Energy reactors has not been disclosed.

    Markets Cheered, Then Oklo Went to the Market

    The after-hours gains were real but came against steep declines for the year, 41% for Oklo and 27% for X-Energy. Twenty-five analysts had a 12-month price target of $86.50 on Oklo, 96% above its July 21 close. Targets that far above the current price reflect long-dated assumptions about when reactors reach commercial operation, which is exactly the variable this initiative is trying to shift.

    On September 11, Oklo filed an 8-K announcing an equity distribution agreement with ten banks, including Goldman Sachs, BofA Securities, Citigroup, J.P. Morgan and Morgan Stanley. The agreement lets Oklo sell up to $1 billion of Class A common stock through an at-the-market program. In such a program, a company sells new shares gradually into the market at prevailing prices rather than in one large offering. Oklo will pay the agents a commission of up to 1.5%, and the shares will be issued under a shelf registration the SEC declared effective on December 4, 2025.

    The filing is a reminder of the capital math. Federal programs measured in hundreds of millions reduce risk. Building reactors requires far more, and for a developer without operating plants, that money comes largely from shareholders. An at-the-market program gives Oklo flexibility on timing. Existing holders face dilution that depends on how many shares are sold and at what price. The company has sole discretion over both.

    Background

    Oklo and X-Energy are among a group of companies developing advanced nuclear reactors: designs smaller than the gigawatt-scale plants that make up most of the existing U.S. fleet, intended to be built faster and located closer to large energy users. Oklo, which trades on the New York Stock Exchange and reports as an emerging growth company, is developing compact fast reactors. X-Energy, whose investors include Amazon, is developing a high-temperature gas-cooled reactor design. Neither company’s reactors are yet in commercial operation.

    Interest in nuclear power for data centers has grown as AI workloads push electricity demand and prices higher. Federal policy has moved on several fronts: a $17.5 billion loan program for large reactors, the Ratepayer Protection Pledge requiring major tech firms to secure their own power, and now a $200 million initiative aimed at speeding advanced reactor development, which the DOE frames against its projection of 300 gigawatts of new nuclear capacity needed by 2050.

    Sources

    Source: OKLO, XE Stocks Jump After-Hours — Trump Administration Taps Oklo, X-Energy In $200M Push To Power AI Data Centers — Stocktwits coverage of the Department of Energy’s $200 million advanced nuclear initiative for AI data centers.

    Primary sources: Oklo Inc. Form 8-K filed September 11, 2026 (equity distribution agreement for up to $1 billion at-the-market offering)

  • Nano Nuclear’s Enveniam Deal Tests the Microreactor Timeline

    Nano Nuclear’s Enveniam Deal Tests the Microreactor Timeline

    TL;DR · 30-second read

    The Short Version

    A company that wants to build very small nuclear reactors — small enough, in principle, to be trucked to a site rather than built as a giant power station — has signed an agreement with a partner called Enveniam to work on the groundwork those reactors need: land, permits, and a way to move the electricity.

    Nothing has been built yet. It is an agreement, not a power plant.

    Why care? The warehouses of computers that run artificial intelligence need huge amounts of steady electricity, and the grid is running short. Small reactors are one proposed answer.

    Marketscreener.com reported that Nano Nuclear Energy Inc. (Nasdaq: NNE), an early-stage developer of microreactors, has signed an agreement with Enveniam covering microreactor infrastructure. The announcement frames the work around the physical and site-level groundwork that a deployed reactor requires, rather than around the reactor hardware itself.

    Neither company has publicly set out the agreement’s commercial terms, its duration, whether it is binding, or which sites or customers it is intended to serve. No megawatt figure, delivery date or financial consideration accompanies the announcement.

    Executive Summary

    The signal in this agreement is where it sits in the value chain. Reactor developers spend their first years on physics, fuel and regulatory design certification. Infrastructure agreements point at the next stage: land, site characterisation, permitting, construction logistics and grid or behind-the-meter connection — the unglamorous work that determines whether a licensed design ever becomes delivered electricity.

    That matters because the constraint on nuclear power for data centres is no longer primarily whether small reactors can be designed. It is whether they can be sited, licensed, financed, fuelled and built on a schedule that matches how fast computing demand is growing. An agreement aimed at infrastructure is at least addressed to the correct bottleneck.

    What it is not is a purchase order. There is no disclosed capacity, no named offtaker, no construction start and no financing package. On the current record, this is a positioning step in a sector where positioning steps are common and completed reactors are not — the industry has yet to place a commercial microreactor into service in the United States.

    The Hard Part Was Never the Reactor

    A microreactor is generally understood in the industry as a unit producing up to roughly 20 megawatts of electricity — a fraction of a conventional nuclear plant, and small enough that the design intent is factory manufacture and transport to site. The broader small modular reactor, or SMR, category runs up to about 300 megawatts. For scale, a single large artificial-intelligence data centre campus can be designed around hundreds of megawatts of continuous demand, so microreactors are best understood as a modular building block, not a one-for-one replacement for a gas plant.

    Designing such a machine is difficult but tractable. Deploying it involves a longer list: an approved site, a construction permit and operating licence from the Nuclear Regulatory Commission, environmental review, security and emergency-planning arrangements, a fuel supply, a construction workforce, and either a grid interconnection or a behind-the-meter arrangement that a utility and regulator will accept. Each of those is a separate multi-year process with its own gatekeepers.

    An agreement explicitly about infrastructure is therefore aimed at the right target. The open question — unanswered by the announcement — is which of those items the two companies intend to take on together, and on whose balance sheet.

    Why Data Centres Keep Calling the Nuclear Industry

    Data centre operators want power that is large, firm and carbon-free. Firm means available around the clock, which is what separates nuclear from solar and wind without storage. Large means tens to hundreds of megawatts at a single point of delivery. And the timing is difficult: in several US markets, a new load asking to connect to the transmission system enters an interconnection queue — a waiting list for grid studies and upgrades — that can run for years.

    That combination is why hyperscale operators have gone directly to nuclear counterparties rather than waiting for the grid to catch up, including agreements to restart retired reactors and to fund next-generation developers. Those deals validated the demand side. They did not solve the supply side, because restarting an existing reactor and building a new one are entirely different engineering and regulatory problems.

    Microreactors are pitched into that gap: smaller increments, sited closer to load, potentially serving campuses that cannot get a timely grid connection. The pitch is coherent. The delivery record does not yet exist, and buyers evaluating it should price that distinction rather than assume it away.

    Agreements Are Cheap; Concrete Is Not

    The advanced nuclear sector runs on letters of intent, memoranda of understanding and framework agreements. Many are genuine early-stage commitments. Very few carry firm capacity, firm dates or firm money, and the distance between a signed framework and a poured foundation is where most of the sector’s announcements have historically stalled.

    The tests that separate the two are specific and public. Has a construction permit application been docketed with the Nuclear Regulatory Commission, and accepted for review? Is there a secured fuel pathway — advanced designs frequently require high-assay low-enriched uranium, a fuel whose Western supply chain is still being built out? Is there a customer with a contract, rather than an interested party? Is there capital sized to a first-of-a-kind build, which by definition costs more than the units that follow?

    None of those markers accompanies this announcement. That is not an accusation of anything; it is a statement of what an infrastructure agreement, on its own, establishes. Readers tracking the sector should treat it as a milestone in a long sequence, and watch for the filings and contracts that would convert it into something bankable.

    Who Gains, and What It Would Take to Matter

    If microreactor siting work matures, the beneficiaries are data centre developers in constrained markets who currently trade away site quality for available power, and industrial or remote loads that are expensive to serve from the grid. The losers, eventually, would be the incumbent solution — long-lead gas generation plus grid upgrades — though not this decade unless several nuclear projects reach operation first.

    For an equity investor, the honest framing is that early-stage nuclear developers are optionality, not cash flow. Value accrues at discrete regulatory and contractual milestones rather than smoothly, and dilution risk is a normal feature of pre-revenue capital-intensive development. For a data centre buyer evaluating a nuclear-adjacent site today, the practical advice is unchanged: contract for power you can point to, and treat an advanced reactor as an upside case in the 2030s rather than a 2026 procurement.

    Background

    Electricity demand from data centres has grown sharply with the build-out of artificial-intelligence computing, after roughly two decades in which US power demand was broadly flat. That reversal collided with a grid that is slow to expand: transmission takes years to permit and build, and the queues for new connections in several regional markets are long. The result has been a scramble by hyperscale operators to secure firm, carbon-free generation directly, including agreements to restart previously retired nuclear plants and to fund next-generation reactor developers.

    Advanced nuclear entered that opening. Small modular reactors and microreactors promise standardised, factory-built units that can be sited closer to load and added in increments, rather than the bespoke multi-gigawatt projects that dominated the last nuclear build cycle. Nano Nuclear Energy is one of a group of companies pursuing that thesis from an early stage, alongside developers backed directly by technology buyers. The sector’s central open question is not whether the designs are plausible — it is whether licensing, fuel supply, financing and construction can be compressed enough to serve data centre demand in this decade rather than the next.

    Sources

    Source: Nano Nuclear, Enveniam Sign Agreement on Microreactor Infrastructure — report that Nano Nuclear Energy Inc. (Nasdaq: NNE) and Enveniam have signed an agreement covering microreactor infrastructure.

  • Aalo’s 50 MW Pod Shows Small Nuclear’s AI Benchmark Is On-Site Gas

    Aalo’s 50 MW Pod Shows Small Nuclear’s AI Benchmark Is On-Site Gas

    TL;DR · 30-second read

    The Short Version

    Crusoe, a company that rents out computing power for artificial intelligence, will spend six months testing a small nuclear reactor from startup Aalo alongside one of its compact data centers.

    Aalo’s reactor is sized to match the gas-fired generators many of these sites already run on. The test is about whether it can keep the computers running reliably, even as their demand for electricity swings up and down.

    If it works, the two companies aim to start building for real in 2029, but first Aalo needs a green light from federal nuclear safety regulators.

    Crusoe, a cloud provider built specifically for AI workloads (often called a neocloud), and reactor developer Aalo Atomics will pair Aalo’s small modular reactor (SMR) technology with Crusoe’s modular Spark AI data center for a six-month trial, Fierce Network reported on August 11, 2026. The test will examine the reactor’s capacity factor, meaning how consistently it can run without downtime, along with its ability to follow the fluctuating power draw of AI workloads when combined with battery storage.

    Both companies are targeting commercial nuclear-powered AI data center deployments in 2029. Aalo’s first product is the Aalo One Reactor in a 50-megawatt Aalo Pod configuration. Commercial deployment in the United States depends on approval from the Nuclear Regulatory Commission.

    Executive Summary

    The Crusoe–Aalo trial is a small-scale engineering test, not a power purchase deal. The goal is to find out whether a factory-built reactor and a factory-built data center can be tightly coupled on one site. According to Aalo CEO Matt Loszak, this will be the first time the two types of infrastructure are so closely integrated. Crusoe co-founder Cully Cavness described the work as mostly electrical engineering: controls, monitoring, load profiles and fault conditions running in both directions.

    The strategic significance lies in how the reactor is sized. The large nuclear deals signed by the major hyperscalers mostly secure output from existing large plants. Aalo, by contrast, has built its 50-megawatt pod to fit the 10-to-50-megawatt range where on-site gas turbines currently power many data centers, and says it can make nuclear’s economics very competitive with natural gas. If that holds, small reactors would be competing for the on-site generator slot rather than against utility-scale nuclear. That claim is still a target and has not been demonstrated.

    The Benchmark Is a Gas Turbine, Not a Gigawatt Plant

    Hyperscaler nuclear deals have mostly involved large legacy plants that deliver power over the grid. Aalo is aiming at a different market. Loszak said many data centers are being powered by gas turbines and small modular gas generators in the 10-to-50-megawatt range, and that this is the reason Aalo chose a 50-megawatt pod. He described the design as a balance between economy of scale, which argues for larger units, and economy of number, which argues for mass-producing many identical ones. He added that a reactor as small as 1 megawatt would suffer on economics.

    This sizing decision identifies the real competitor. A 50-megawatt pod that can be stacked is meant to fill the same role in a site plan that on-site gas fills today: dedicated, behind-the-meter capacity, sized in blocks, added as a campus grows. It is not meant to replace a grid connection to a 1-gigawatt plant. The people affected are data center developers and neoclouds that currently use gas to get around grid interconnection delays. Crusoe is one of them, and Cavness said the company already pursues natural gas, solar and batteries as a portfolio.

    The comparison also sets the standard the technology must meet. On-site gas is a known quantity with established supply chains. Aalo’s statement that it can be very competitive with natural gas is a stated goal, and neither company has published cost-per-megawatt-hour figures to back it up. The benchmark is clear. Whether Aalo can hit it has not yet been shown.

    Why the Trial Is About Load Following, Not Reactor Physics

    Loszak said the first priority is capacity factor: can the reactor run for months with very limited downtime? The second priority is load following, meaning how well the power supply tracks demand as it changes. AI workloads are not flat. Loszak said Crusoe may simulate the different fluctuation patterns it sees across training and inference jobs. The setup will include battery storage so the companies can test how nuclear and batteries share the job of absorbing those swings.

    This is the practical challenge of tight coupling. When a data center draws from the grid, the grid absorbs its variability. When a reactor sits beside the load with no grid in between, any mismatch between supply and demand has to be handled on site, through controls, storage, or the reactor’s own response. Cavness’s emphasis on fault conditions in both directions points to the same problem: a disturbance on either the data center side or the reactor side has to be contained without taking down the other.

    This is also where the gas comparison is tested in practice. On-site generators are often chosen because operators can dispatch them to match load. A nuclear pod paired with batteries needs to show similar operational behavior before a buyer will treat it as a replacement. Six months of data on that pairing is exactly what a prospective buyer would want to see.

    Time Is the Cost Line Both Companies Are Trying to Cut

    Cavness described nuclear’s historic problem as time and money. Build timelines of a decade or more lead to cost overruns, which raise the price per kilowatt-hour. The proposed solution is modular, mass-manufactured units that bring down both the timeline and the cost. Aalo reached criticality, a sustained nuclear chain reaction, within three years of its founding, which is fast by the standards of the nuclear industry. Crusoe’s modular data center approach follows the same manufacturing-led thinking.

    The 2029 target is aggressive, and several dependencies stand in the way. Aalo needs Nuclear Regulatory Commission approval before any domestic commercial deployment. The companies also acknowledge they will need to win over local communities, which are increasingly skeptical of data centers even without a reactor involved. Their stated answer is careful site selection and public education. A successful trial would reduce engineering risk, but it would not settle licensing, siting or cost, and those are the factors that will determine whether small nuclear actually takes a share of the on-site power market from gas.

    Background

    Crusoe is a neocloud, a cloud provider focused on AI computing, that builds its own data centers, including its modular Spark design. It has pursued several energy sources, including natural gas, solar and batteries, to power those sites as grid capacity for data centers has become harder to secure. Aalo Atomics is a nuclear developer building factory-made reactor pods. Its first product is the Aalo One Reactor in a 50-megawatt Aalo Pod configuration, and the company reached criticality within three years of its founding.

    Nuclear power has become a major topic in data center planning. All three major hyperscalers have signed nuclear supply agreements, mostly with large existing plants. Small modular reactors are a newer, largely unproven category. Proponents argue they can avoid the decade-plus build times and cost overruns of traditional nuclear, but they have yet to demonstrate that at commercial scale.

    Sources

    Source: Neocloud Crusoe puts Aalo nuclear power to the AI data center test (Fierce Network), covering Crusoe and Aalo’s six-month trial pairing a small modular reactor with Crusoe’s Spark AI data center.

  • Ohio Site That Once Drew 3% of U.S. Power Shows Why Brownfields Ease AI’s Siting Fight

    Ohio Site That Once Drew 3% of U.S. Power Shows Why Brownfields Ease AI’s Siting Fight

    TL;DR · 30-second read

    The Short Version

    A large piece of southern Ohio that once made fuel for nuclear bombs is being turned into what officials call the world’s largest artificial intelligence computing center. The Japanese investment firm SoftBank is paying for it.

    Across the United States, neighbors are protesting projects like this over power, water and noise. Here, many locals are cheering. The land is already industrial, the power lines were built for a plant that once used as much electricity as New York City, and the area badly needs jobs.

    The hard part is still ahead: building a gas power plant and 18 small nuclear reactors to run it.

    Spotlight on America reported in a June 19, 2026 story published by The National Desk that Pike County, Ohio, is embracing plans for what officials call the largest AI data center in the world. The project will be built on the site of the Portsmouth Gaseous Diffusion Plant (PORTS), a Cold War-era uranium enrichment plant, and renamed the PORTS Technology Campus.

    At a March 20 announcement attended by Energy Secretary Chris Wright, Assistant Secretary of Environmental Management Tim Walsh and other officials, backers described a campus combining the data center with a $33 billion natural gas power plant and 18 small modular reactors (SMRs), compact nuclear units built to standardized designs. SoftBank is funding the project, with a budget cited at $1.5 trillion, and SB Energy co-CEO Rich Hossfeld said 35,000 workers will build it.

    Executive Summary

    The PORTS Technology Campus pairs a record-scale AI data center with its own dedicated generation — a $33 billion gas plant and 18 SMRs — on federal land the Department of Energy is already spending $14 billion to $18 billion to clean up. Local leaders describe the site as a “perfect fit” because it inherits water and grid infrastructure built for one of the largest industrial electricity consumers in American history.

    The project matters beyond Ohio because it arrives as opposition to data centers spreads from Maine to Washington. Pike County shows why some sites draw far less resistance: the land is already industrial, some nearby residential parcels are unsafe for homes but acceptable for industry, and the county badly needs jobs. What the welcome does not settle is whether the new generation can be financed, licensed and built on a timeline that matches the computing load.

    Why a Cold War Site Defuses the Usual Data Center Fight

    The objections filling hearing rooms from Columbus to Scranton are specific: data centers draw water and electricity residents rely on, strain local grids, and add noise and exhaust from backup generators like those running in Northern Virginia. Pike County’s site answers several of those objections before they are raised, because the region’s heaviest industrial footprint is already there. The Portsmouth plant, according to Steve Shepherd of the Southern Ohio Diversification Initiative, used about 3% of the nation’s electricity — roughly what New York City used — and consumed 30,000 to 40,000 gallons of water a day, which he said matches what the new campus is expected to need.

    Land is the second mechanism. Elsewhere, a data center often means rezoning farmland or open space next to homes. Here, the land is a federal industrial reservation being cleared with Department of Energy money, and nearby residential parcels that a recent report found carry unsafe levels of radioactive contamination are, according to local official Jennifer Chandler, acceptable for industrial use. A dozen of those properties have already been bought for the campus footprint. The project does not displace a use residents value; for some families it may offer a way off land they should not be living on.

    The third mechanism is economic. Pike County ranks third-lowest in Ohio for per-capita income, and a 35,000-worker construction effort reshapes a rural economy. Together, these give substance to Shepherd’s claim that the site is “a model for the country”: legacy industrial sites with existing transmission corridors, water systems and industrial zoning face fewer of the objections now stalling greenfield projects. The limit is that few sites anywhere carry infrastructure sized like this one.

    An Inherited Grid Is Not an Inherited Power Supply

    The 3% figure describes what the plant drew during its operating life, not what the grid can deliver today. Existing transmission corridors and substation sites are a genuine head start — securing rights-of-way is among the slowest steps in any grid project — but the electricity itself still has to be generated. Uranium enrichment at Portsmouth ended in 2001, and whether the lines that served it remain usable at this scale has not been published.

    That is why the plan pairs the data center with dedicated generation. Building a $33 billion gas plant and 18 reactors on site is the most direct answer to the grid-strain objection, because the campus would not compete with households for existing supply. But it shifts risk rather than removing it. A gas plant of that cost needs pipeline capacity and produces its own emissions, moving the air-quality question from backup generators to a primary power station.

    The reactors carry the longest lead time. SMRs are still early in commercial deployment in North America, and each project requires federal licensing before it can operate; 18 units is a fleet, not a pilot. If computing capacity comes online before the reactors do, the gas plant or the regional grid would have to carry the load in the meantime. No capacity figure for the gas plant or the reactors, and no sequencing plan, accompanied the announcement. That, not local acceptance, is the test Pike County has yet to pass.

    Superlatives Without Megawatts

    The announcement leaned heavily on scale: “the largest AI data center on earth,” a facility “bigger than any facility ever built in world history,” a budget cited at $1.5 trillion. Those claims may prove accurate, but none came with the measures the industry uses to compare projects — megawatts of computing load, number of buildings, phase dates or named tenants.

    The dollar figures illustrate the gap. The $33 billion gas plant is a small fraction of $1.5 trillion; the remainder would presumably fund reactors, buildings, computing hardware and supporting infrastructure over many years, but no breakdown was offered. For suppliers of turbines, transformers, cooling systems and chips, a headline figure without a schedule signals intent, not an order book.

    None of this diminishes the site’s real advantages. It means the project is best judged on the disclosures still to come rather than on the size of the tent on announcement day.

    Background

    The Portsmouth Gaseous Diffusion Plant near Piketon, in Pike County, Ohio, was one of three US gaseous diffusion plants built to enrich uranium during the Cold War. Enrichment ended in 2001, and the Department of Energy is now spending $14 billion to $18 billion to decontaminate and dismantle the site. The Southern Ohio Diversification Initiative (SODI) is the local organization charged with redeveloping it.

    The project arrives as opposition to AI data centers grows nationwide, driven by concerns over water use, grid strain, noise and backup-generator emissions. SoftBank, a Japanese investment group, backs the effort alongside SB Energy, its affiliated energy developer.

    Sources

    Source: Amid nationwide backlash, an Ohio county welcomes the world’s largest AI data center — The National Desk’s Spotlight on America on the PORTS Technology Campus planned for Pike County, Ohio.

  • Offshore Nuclear Barges Eye California Ports and Data Centers

    Offshore Nuclear Barges Eye California Ports and Data Centers

    A concept for floating, offshore nuclear power barges is being pitched as a way to supply electricity to California ports and data centers, with proponents arguing that siting reactors in federal waters could avoid the state’s long-standing prohibition on new onshore nuclear plants. Fortune reported the proposal on June 16, 2026.

    Executive Summary

    The pitch pairs two trends: a resurgent interest in small, modular nuclear reactors and an acute shortage of firm, carbon-free power for AI-era data centers and electrified ports. By mounting reactors on barges moored offshore, developers argue they can deliver power directly to coastal customers behind the meter — meaning the electricity flows to the buyer without traversing the public grid — while operating under federal rather than state jurisdiction.

    The stakes are significant for California, where data center operators and port electrification programs are competing for the same constrained grid capacity, and where the state’s 1976 moratorium on new nuclear construction has effectively frozen a category of firm, low-carbon generation. Whether an offshore barge genuinely sits outside that moratorium — legally, politically, and practically — is the central question the proposal raises.

    Why Offshore, and Why Now

    The appeal is straightforward on paper. California data center demand is rising with generative AI workloads, and the state’s largest ports — Los Angeles, Long Beach, and Oakland — are under pressure to electrify cargo handling and shore power for docked ships. Both need round-the-clock electricity that solar and wind alone cannot provide without significant storage. A barge-mounted reactor delivered to a mooring can, in principle, be built in a shipyard, towed into place, and connected to a single large customer, compressing the multi-year permitting and construction timelines that plague land-based projects.

    Offshore siting also reframes the political map. State moratoria on new nuclear plants apply on land; federal waters begin three nautical miles from shore in most of California. A vessel-based reactor could plausibly be regulated primarily by federal agencies — the Nuclear Regulatory Commission and, for a marine platform, the Coast Guard — rather than the state. That is the crux of the sidestep argument, and it will be tested by lawyers long before it is tested by engineers.

    The Behind-the-Meter Economics

    Behind-the-meter power arrangements let a generator sell electricity directly to a co-located customer, bypassing utility tariffs and, often, transmission queues that now stretch years. For hyperscale data center operators, that shortcut has become the single most valuable feature of any new generation project, which is why they have signed deals for restarted nuclear plants and are exploring small modular reactors on their own campuses. An offshore barge extends the same logic to sites that lack the land for on-site generation.

    The economics still have to close. Marine nuclear platforms carry costs that land plants do not: marinization of equipment, mooring and undersea cable systems, corrosion management, and specialized crews. They also inherit the industry’s chronic problem — first-of-a-kind small reactors have consistently come in above their initial cost estimates. Whether the shipyard-build efficiencies proponents cite can offset those headwinds is unproven at commercial scale.

    Regulation, Siting, and the Politics of a Workaround

    Framing a project as a jurisdictional workaround invites the jurisdiction being worked around to push back. California has other levers even if the reactor sits in federal waters: the California Coastal Commission reviews activities affecting the coastal zone, cable landings require state and local permits, and the electricity buyer on shore is a regulated entity. A project marketed primarily as a way to avoid state law is likely to draw sharper scrutiny than one that engages the state on its merits.

    There are also legitimate questions to ask of critics as well as proponents. Opposition to nuclear in California has historically blended safety, seismic, and waste concerns with broader anti-industrial sentiment, and the coalition that upheld the 1976 moratorium is not monolithic. A fair debate requires pressing both sides: proponents on safety, security, and decommissioning of a marine reactor; opponents on what alternative firm, low-carbon supply they propose for the same coastal loads on the same timeline.

    Background

    California enacted its moratorium on new nuclear construction in 1976, tying future approvals to a federal solution for high-level radioactive waste that has not materialized. The state’s last operating commercial nuclear plant, Diablo Canyon, was scheduled to retire but received a life extension amid grid reliability concerns. Meanwhile, AI-driven data center demand and port electrification are straining coastal grid capacity.

    Interest in small modular reactors and factory-built nuclear designs has revived globally, with hyperscale technology companies signing power deals for restarted plants and exploring on-site reactors. Marine nuclear propulsion has decades of naval history, and Russia has operated a civilian floating nuclear plant since 2020, but no comparable commercial offshore reactor has been deployed in U.S. waters.

    Source: Offshore nuclear barges could power ports and data centers—starting with California, where nuclear is banned — Fortune reports on a proposal to moor small reactors offshore to serve California ports and data centers.

  • Clayco and Deep Atomic Team Up on DOE Nuclear-Powered Data Center Proposal

    Clayco and Deep Atomic Team Up on DOE Nuclear-Powered Data Center Proposal

    Construction giant Clayco has partnered with reactor startup Deep Atomic on a proposal to the U.S. Department of Energy (DOE) for a nuclear-powered data center, according to a May 20, 2026 report from Engineering News-Record. The move pairs one of the country’s large design-build contractors with a small modular reactor (SMR) developer whose technology is aimed specifically at powering data centers.

    The report identifies a proposal — not an award, site, or construction start — so the announcement marks an early but concrete step: a credible builder and a reactor designer jointly putting a nuclear-powered data center concept in front of the federal government.

    Executive Summary

    According to Engineering News-Record, Clayco — a Chicago-based design-build firm with a substantial mission-critical construction practice — has joined forces with Deep Atomic, a startup developing a compact nuclear reactor tailored to data center loads, to submit a proposal to the Department of Energy for a nuclear-powered data center. The headline fact is the pairing itself: nuclear-for-data-centers announcements have often come from technology companies or utilities, while this one comes from the firms that would actually have to design and build such a facility.

    Why it matters: the data center industry’s central constraint has shifted from land and fiber to electric power, and small modular reactors are the most-discussed long-term answer to delivering firm, carbon-free electricity next to compute. Most SMR-plus-data-center concepts to date have lived in slide decks and memoranda of understanding. A joint proposal from a constructor and a reactor designer, aimed at a DOE process, moves the idea toward the engineering and procurement questions — constructability, integration, cost — that will ultimately decide whether it happens.

    That said, the source is thin. It confirms a partnership and a proposal, and little else. Capacity, siting, financing, licensing path, and timeline are all unstated, and a proposal to DOE carries no guarantee of selection or funding.

    Why a Builder and a Reactor Startup Need Each Other

    Nuclear power’s historical weakness in the West has rarely been the physics; it has been construction — schedule overruns and cost escalation on complex, first-of-a-kind projects. Small modular reactors are designed to counter that by shrinking reactor units to sizes that can be substantially factory-fabricated and repeated. But someone still has to integrate a reactor building, a data hall, cooling systems, and site infrastructure into one deliverable project. That is design-build territory, and it explains why a reactor startup would want a partner like Clayco, which brings large-scale industrial and mission-critical construction experience, early in the process rather than after a design is frozen.

    The logic runs the other way too. Data center builders face a future in which winning work may depend on solving the power problem, not just the concrete-and-steel problem. A contractor that can credibly offer a generation-integrated campus — where the power plant and the data center are engineered together — is positioning for where the market appears to be heading. For Deep Atomic, which has publicly positioned its compact reactor concept as purpose-built for data center loads, a constructor partner converts a design pitch into something closer to a buildable offering.

    The DOE’s Role: Catalyst, Landlord, or First Customer?

    The proposal’s destination is as notable as its authors. Over the past two years, federal energy policy has moved aggressively to accelerate advanced nuclear — including efforts to open federally controlled sites to data center and reactor development and to create faster pathways for demonstration reactors. A DOE proposal process gives early-stage nuclear-data-center concepts things the private market struggles to provide: potential site access, a structured evaluation, and a federal counterparty whose involvement can de-risk later private financing.

    The report does not say which DOE program or solicitation the proposal targets, and that distinction matters enormously. A demonstration award with site access and cost-share is a very different outcome from an unsolicited concept paper. Until the specific mechanism is known, the fair reading is that Clayco and Deep Atomic are working to be in the room when federal support for nuclear-powered compute is allocated — a rational move, but one whose value depends entirely on selection decisions that have not been reported.

    The Economics of Putting Reactors Next to Racks

    The commercial case for nuclear-powered data centers rests on one structural problem: interconnection. In many U.S. markets, new large loads face multi-year waits for grid connections and transmission upgrades, while AI training campuses are being planned in the hundreds of megawatts. On-site generation — ‘behind the meter,’ meaning power produced and consumed without traversing the public grid — offers a path around that queue, and nuclear is the only mature carbon-free technology that runs around the clock regardless of weather.

    The counterweights are cost and time. No SMR has yet been built and operated commercially in the United States, so the true delivered cost of SMR electricity is unproven, and licensing a new reactor design — through the Nuclear Regulatory Commission or an alternative federal authorization route — is measured in years. Data center operators deciding today between a gas turbine they can procure now and a reactor that might energize early next decade face a genuine tension between speed and long-term positioning. Proposals like this one are, in effect, bids to compress that timeline with federal help.

    A Proposal Is Not a Power Plant

    It is worth being clear-eyed about where this sits on the maturity curve. The industry has seen a wave of nuclear-data-center announcements — utility partnerships, hyperscaler power purchase agreements, reactor-restart deals — and the distance between announcement and operating megawatts remains long everywhere. A proposal is the earliest rung: no reported site, no reported customer, no reported financing, no reported regulatory filing.

    What distinguishes this step is who took it. Constructors are economically conservative actors; they commit engineering resources to pursuits they believe can become projects. Clayco’s participation is a market signal that at least one major builder judges nuclear-powered data centers worth real pursuit cost. Whether that judgment is vindicated depends on the questions the announcement leaves open — which are, for now, most of the important ones.

    Background

    Data center power demand has surged with AI training and inference workloads, colliding with congested grids and multi-year interconnection queues across major U.S. markets. That collision revived commercial interest in nuclear power: recent years have seen technology companies sign power purchase agreements with SMR developers, back reactor restarts, and lobby for faster licensing, while federal policy moved to open government sites and demonstration pathways for advanced reactors and AI infrastructure.

    Clayco is an established Chicago-based design-build contractor active in industrial and mission-critical construction. Deep Atomic is a newer entrant among the dozens of SMR developers worldwide, notable for designing its compact reactor concept specifically around data center power and cooling needs rather than adapting a general-purpose utility reactor. Their joint DOE proposal, reported by Engineering News-Record in May 2026, is an early test of whether the nuclear-data-center thesis can move from agreements-in-principle toward engineered, federally supported projects.

    Source: Clayco Partners With Deep Atomic for DOE Nuclear-Powered Data Center Proposal — Engineering News-Record report, May 20, 2026, on the firms’ joint proposal to the U.S. Department of Energy.