Oklo Builds Idaho Reactor, Posts Wider Loss

The nuclear developer reported third-quarter results alongside progress on its Aurora reactor, fuel program, and isotope business.

Updated on Nov. 6, 2026 in Nuclear

Oklo Builds Idaho Reactor, Posts Wider Loss

Live Poll

Should the U.S. expand nuclear power to meet future energy demand?

Oklo reported a third-quarter GAAP loss of 22 cents per share and revenue of $1.86 million, with an operating loss of $71 million. The company ended the quarter with $3.13 billion in cash, cash equivalents and marketable securities.

Why it matters

Oklo is working to bring advanced nuclear power to market, and its progress on construction, fuel, and federal approvals is being watched as an indicator of how quickly new reactor technology can move from plan to operation. The quarter's spending and funding figures show the scale of capital required for that effort.

Oklo's third-quarter revenue of $1.86 million compared with zero a year earlier and a Wall Street estimate of $1.02 million, while its operating loss widened to $71 million from $36.3 million. The company's 2027 first fuel-assembly target is still subject to approvals.

The players

Oklo Inc.

Oklo is a nuclear power company developing small advanced reactors and related fuel-recycling and isotope businesses in the United States.

U.S. Forged Rings

U.S. Forged Rings is a manufacturer that signed an agreement with Oklo reserving production capacity for Aurora reactor modules.

U.S. Department of Energy

The U.S. Department of Energy is the federal agency that approved the Aurora project's Preliminary Documented Safety Analysis.

The details

Oklo began structural construction of its 75-megawatt Aurora powerhouse in Idaho, and workers completed reactor-area excavation and started erecting structural steel as of Nov. 4. The Department of Energy approved the project's Preliminary Documented Safety Analysis, and the company secured $6.8 million in federal funding to develop recycled nuclear fuel. On Friday Oklo also announced a manufacturing agreement with U.S. Forged Rings reserving capacity for 27 Aurora reactor module-equivalents.

Nov. 4: Reactor-area excavation completed and structural steel erection started at the Aurora site in Idaho.
2026: Oklo expects operating cash outflows of $120 million to $150 million and capital spending of $400 million to $500 million.
2027: Oklo expects to complete the first Aurora fuel assembly, subject to approvals.
2030-2035: Future Aurora reactor deployments are supported under the manufacturing agreement with U.S. Forged Rings.
Within 12 months: Oklo expects its first contracted isotope delivery.

Big Picture

The Department of Energy's approval of Aurora's Preliminary Documented Safety Analysis is a milestone within the agency's review of advanced reactor designs. It shows the project moving through the federal safety-analysis stage ahead of its planned 2027 fuel-assembly target.

Advanced reactor projects like Aurora are intended to add new sources of electricity, and progress on construction and fuel development shows how close that capacity is to reaching the grid. Customers and communities will see practical effects only as projects move from construction to operation.

The takeaway

Oklo's spending outlook and approval timelines show that advanced nuclear projects depend on both large capital commitments and federal review milestones. Readers following the sector can track construction and approval updates as the 2027 fuel-assembly target approaches.

What happens next

Oklo expects to complete its first Aurora fuel assembly in 2027, subject to approvals, and expects its first contracted isotope delivery within 12 months.