Oklo's 2028 power revenue target holds even after first criticality
The advanced nuclear sector has been repriced around AI-driven power demand, but the distance between test-reactor milestones and contracted megawatt-hours remains the defining variable for pre-revenue developers. Oklo (NYSE:…
Key takeaways
- Oklo's earliest timeline for commercial power revenue remains 2028, unchanged even after its Groves isotope test reactor achieved a controlled nuclear chain reaction in early August.
- Oklo reported roughly $1.2 million in quarterly revenue, drawn mostly from services, and ended June with about $3 billion in cash and marketable securities.
- Two of the five Department of Energy steps to operate the Aurora powerhouse at Idaho National Laboratory are cleared, with three still remaining.
- Oklo's revenue sequence runs services now, isotopes by early 2027 from the Idaho Radiochemistry Laboratory, and commercial power after that.
- Meta Platforms agreed to support up to 1.2 gigawatts of development at a planned Ohio campus, prepaying to help fund fuel.
The advanced nuclear sector has been repriced around AI-driven power demand, but the distance between test-reactor milestones and contracted megawatt-hours remains the defining variable for pre-revenue developers. Oklo (NYSE: OKLO) closed August with two concrete firsts: roughly $1.2 million in quarterly revenue, drawn mostly from services, and confirmation that its Groves isotope test reactor in Lockhart, Texas sustained a controlled nuclear chain reaction in early August. Management's own quarterly filing, however, keeps commercial power revenue on a 2028 timeline at the earliest.
The Aurora clock
The path to actual electricity sales runs through the Aurora powerhouse at Idaho National Laboratory. Oklo broke ground there on September 22, 2025, and as recently as July 2025 the company projected commercial operation in late 2027 or early 2028. By the August quarterly filing, the language had firmed: the target is now described as "an ambitious target of deploying our first powerhouse in 2028," with management's own adjective signaling the early edge of the window is gone.
Regulatory progress is real but incomplete. Of the five steps in the Department of Energy's pathway for operating a nuclear facility, two are cleared: the Nuclear Safety Design Agreement, approved in early 2026, and the Preliminary Documented Safety Analysis, approved June 11. Three remain. Beyond approvals, the first core depends on a Department of Energy award of five metric tons of high-assay low-enriched uranium recovered from decades-old government reactor fuel, which Oklo must fabricate into finished fuel at a new facility on the Idaho site.
The demand side is further along
Against the backdrop of data center operators locking in power years in advance, Oklo's demand story looks the readier half of the business. Meta Platforms has agreed to support up to 1.2 gigawatts of development at a planned Ohio campus, prepaying to help fund fuel. Commercial high-assay low-enriched uranium supply from Centrus Energy is expected to begin delivery in 2029 under a letter of intent between the two companies, feeding that later Ohio build-out.
The revenue sequence Oklo's own statements describe runs: services now, isotopes by the first part of 2027 from the NRC-licensed Idaho Radiochemistry Laboratory, and power after that. Management said on the August earnings call that isotope revenue is more likely to come from the Idaho Radiochemistry Laboratory than from Groves, which is expected to spend the next year working up to research-and-development production quantities.
On balance, the company can afford the timeline. Oklo ended June holding approximately $3 billion in cash and marketable securities. The company's own guidance for 2026 calls for $120 million to $150 million in operating cash use and $400 million to $500 million in capital spending on property and equipment. The macro caveat is the three remaining DOE regulatory gates: any slip there, against a first-of-a-kind fuel fabrication requirement, is what puts the 2028 target under pressure.
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