Kairos broke ground on the Hermes 2 demonstration plant at Oak Ridge on April 17. TerraPower poured first concrete on Natrium at the retired Kemmerer coal site six days later. Two Gen IV power-producing reactors moved from paper license to active construction inside one week, in a country whose anti-nuclear consensus from Three Mile Island through Fukushima had been priced as a permanent ceiling on the industry.

The veto coalition that built the ceiling ran on tight reasoning. The NRC was structurally incapable of issuing a permit on any timeline that did not bankrupt the licensee. Vogtle 3 and 4 had blown out from 14 billion to 35, ending the AP1000 economics on contact. Any design touching fuel above 5 percent enrichment depended on a HALEU supply chain Washington had refused to finance for four decades. The honest conclusion was that American fission was a closed technology and load growth would be absorbed by gas peakers and demand response.

Hyperscaler procurement moved the binding constraint. Microsoft, Google, Meta, Amazon need firm watts on a build cadence that wind and solar PPAs cannot underwrite without a dispatchable partner, and the only permittable zero-carbon dispatchable partner sitting inside the procurement window is fission. Once the demand signal cleared the political layer, the HALEU pipeline restarted under the IRA, the NRC accepted both construction permits on the applicants' own schedule, and Kemmerer cleared a fuel-loading window inside this decade.

Concrete is curing in Tennessee and Wyoming. The veto held until the moment the load showed up.