The Saudi-us 123 Nuclear Agreement: What the 2026 Deal Really Means for Saudi Reactors

For reactor-related planning, the practical meaning of a 123 agreement is that it enables certain types of nuclear cooperation that otherwise require this legal framework under Section 123 of the Atomic Energy Act of 1954, as amended. Congressional Research Service reporting notes that covered cooperation can include exports of reactors and critical reactor components, and transfers of certain U.S.-origin nuclear material subject to licensing for commercial, medical, and industrial purposes. It also notes that foreign entities’ nuclear exports to Saudi Arabia that contain U.S.-origin technology might require U.S. approvals. In plain terms, the 2026 agreement is designed to make lawful pathways for U.S. participation in the Kingdom’s civil nuclear program clearer, while tying cooperation to safeguards and nonproliferation expectations.

Enrichment, Safeguards, and the “Gold Standard” Debate

The most sensitive issue is whether the framework could eventually allow uranium enrichment in Saudi Arabia. The New York Times reported that the arrangement could lead to the country enriching its own fuel for reactors. IndexBox, citing CNN and reporting that President Donald Trump approved a 30-year civilian nuclear cooperation deal, said the framework would start with a joint U.S.-Saudi evaluation of whether enrichment is commercially feasible and necessary. Drishti IAS similarly described a two-year joint feasibility study and a potential “black box” model in which sensitive enrichment technologies remain under U.S. control; it also said Saudi Arabia would initially import nuclear fuel for its reactors. Under the approach described by IndexBox, American companies would build the enrichment facility and retain authority over sensitive technology, and Saudi Arabia would be barred from independently developing enrichment technology or obtaining it from other countries during the initial decade.

Safeguards are a second flashpoint. The DOE states that the 123 agreement was signed alongside a bilateral safeguards agreement and says the two agreements support high standards of nuclear safety, security, and nonproliferation. However, IndexBox reported that the pact does not require Saudi Arabia to adopt the International Atomic Energy Agency’s Additional Protocol, and instead relies on a bilateral safeguards structure that U.S. officials described as preserving oversight while addressing Saudi concerns. This sits against prior U.S. policy described by CRS: a long-standing U.S. approach has linked a U.S.-Saudi 123 agreement to enhanced international safeguards and a commitment to forgo enrichment or reprocessing. TIME framed the comparison via the 2009 U.S.-UAE 123 agreement, where the UAE agreed to forgo domestic enrichment and reprocessing—often called the “gold standard”—and noted Saudi Arabia has rejected that commitment.

Process and politics will shape how the deal translates into projects. The DOE said the agreement will be transmitted to Congress for review, and TIME noted that 123 agreements typically take effect unless Congress jointly disapproves the deal and a two-thirds majority vote overrides a presidential veto. CRS adds that in May 2026 the Administration said President Trump was reviewing a draft agreement that, if signed, would be presented to Congress. The 2026 signing also follows earlier engagement: CRS reports that from 2017 to 2019 the DOE granted seven “Part 810” authorizations for U.S. companies to engage in civil nuclear discussions, including marketing, with Saudi Arabia. For Saudi reactors, the near-term significance is less about immediate construction announcements in these documents and more about the legal and oversight framework that could govern U.S. exports, safeguards expectations, and any future path toward fuel-cycle capabilities.