Oklo(NYSE: OKLO) and Nano Nuclear Power(NASDAQ: NNE) are each pre-revenue nuclear start-ups chasing the identical multitrillion-dollar alternative: small nuclear reactors that might sooner or later present clear, always-on energy to synthetic intelligence (AI) information facilities and different power-hungry prospects.
Between the 2, Oklo has the sting on partnerships, whereas Nano’s valuation seems to be extra cheap. Let’s take a more in-depth at each to see which one is the higher nuclear power inventory as we speak.
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Oklo: A wealthy valuation with big-name backers
Oklo is designing a small nuclear reactor known as an Aurora powerhouse. These reactors are engineered to run on each recycled gas and high-assay low-enriched uranium (HALEU), a one-two punch that might make them extra environment friendly, extra versatile, and fewer depending on the standard nuclear gas provide chain.
Oklo’s energy is its partnerships. By no means thoughts early backing by OpenAI CEO Sam Altman, Oklo now has main partnerships with Meta Platforms, Change, Equinix, Nvidia, Vertiv, Liberty Power, Blykalla, and RPower.
The largest alternatives for future income progress are the primary three — Meta, Change, and Equinix — which collectively equal about 14 gigawatts (GW) of potential energy demand, or sufficient to require about 187 full-sized 75 megawatt (MW) Aurora powerhouses, if Oklo had been to produce all of it.
If we assume about $40 to $90 per megawatt-hour, Oklo’s acknowledged goal worth vary, a full-sized 75 MW powerhouse may generate about $26 million to $59 million in annual income. At that price, its 14 GW backlog clocks in round $4.9 billion to $11 billion — nonetheless under its $12.5 billion market cap.
With a price-to-book ratio round 8 and 0 income to its identify, Oklo already instructions a premium valuation. It is not low cost, however the measurement of its potential demand explains why buyers are nonetheless keen to pay up.
Nano: An earlier play in a burgeoning business
Nano Nuclear Power can also be designing small nuclear reactors. Like Oklo, the corporate is pre-revenue and lacks the regulatory approval to function commercially.
Nano does not have as many star-studded companions as Oklo, however it does have a reasonably large one: Tremendous Micro Pc(NASDAQ: SMCI). Earlier in Could 2026, the 2 firms signed a memorandum of understanding to deploy Nano’s microreactors for Tremendous Micro Computer systems’ information facilities.
Though it is unclear what the income potential may very well be, the partnership is an effective signal that prospects are keen to discover Nano’s expertise earlier than it has even reached regulatory approval.
On that entrance, nonetheless, Oklo seems to be forward. It is had an extended relationship with the U.S. Nuclear Regulatory Fee (NRC), and it is at present working with the company to construct its first powerhouse on the Idaho Nationwide Laboratory. Final week, the NRC authorised the Principal Design Standards (PDC) topical report for its Aurora powerhouse. Whereas that does not imply the reactor itself is licensed, it does set a security framework that may be referenced in future functions, thus lowering repeat work.
Nano, for its half, has began constructing a analysis reactor for the College of Illinois. Though it will not generate business income, it may permit Nano to validate that its expertise works safely.
Which is best for buyers as we speak: Oklo or Nano?
Oklo has the stronger enterprise case. Not solely does it have main tech companions, however it additionally has a backlog of tasks that may generate significant income. Despite the fact that it is nonetheless pre-revenue as we speak, it will probably activate the spigot inside the subsequent two years, because the chart under reveals.
Knowledge by YCharts
That stated, Nano Nuclear may present extra upside from right here. Buying and selling at $26 a share, Nano carries a market cap of about $1.4 billion — a fraction of Oklo’s $12.5 billion. Whereas that is nonetheless richly valued for a pre-revenue firm, it appears far more cheap than Oklo’s a lot steeper valuation.
Must you purchase inventory in Oklo proper now?
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Steven Porrello has positions in Nano Nuclear Power, Nvidia, and Oklo. The Motley Idiot has positions in and recommends Equinix, Meta Platforms, Nvidia, and Vertiv. The Motley Idiot has a disclosure coverage.
Higher Nuclear Power Inventory: Oklo vs. Nano Nuclear Power was initially printed by The Motley Idiot
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