Why it Matters

Four executive orders signed on May 23, 2025, collectively aim to fast-track advanced reactor deployment, overhaul nuclear testing at DOE facilities, shore up the fuel supply chain (including high-assay low-enriched uranium, or HALEU), and designate DOE sites for reactors that could power AI data centers. According to a Skadden legal analysis, the orders set hard deadlines — some as early as November 2027 for operational reactors.

Nearly ten months in, the Senate Energy and Natural Resources Committee will convene on March 19, 2026, to scrutinize how the Department of Energy is carrying out President Trump's May 2025 nuclear energy executive orders which represent the most aggressive federal push for nuclear power in decades. The hearing arrives at a moment when DOE implementation is visibly accelerating, the nuclear industry is flush with optimism, and critics are raising alarms about safety standards being quietly rewritten behind closed doors.

Committee Chair Sen. Mike Lee (R-UT) and Ranking Member Sen. Martin Heinrich (D-NM) will lead the questioning. The witness list signals the committee wants to hear from all corners of the nuclear ecosystem: a senior DOE official, a national lab director, and a private-sector startup CEO.

Who's Testifying

The Senate Energy Committee hearing page lists three confirmed witnesses:

  • Theodore J. Garrish, Assistant Secretary for Nuclear Energy, U.S. Department of Energy
  • Dr. John Wagner, Director, Idaho National Laboratory
  • Dr. Mike Laufer, Co-founder and CEO, Kairos Power

Garrish is the administration's point person on DOE nuclear implementation. His name appeared on a March 9 Federal Register notice announcing closed meetings to implement voluntary agreements under DOE authority — a sign of active behind-the-scenes work in the days leading up to this Department of Energy hearing.

Wagner leads the national lab most central to advanced reactor testing. Laufer represents the private-sector startups that stand to benefit most from the regulatory streamlining these orders promise.

What's Driving the Timing

Several developments in early 2026 have set the table for this congressional hearing on nuclear energy.

DOE has been busy. In February, the department established a categorical exclusion under the National Environmental Policy Act for advanced nuclear reactors — directly implementing a directive from Executive Order 14301. That same month, Reuters reported that nuclear startups were expressing confidence in meeting DOE's accelerated Reactor Pilot Program deadlines. And DOE itself published a fact sheet touting the administration's progress, framing it as "Unleashing America's Next Nuclear Renaissance."

But not all the news has been positive. In January, NPR reported that the Trump administration had overhauled nuclear safety directives without public disclosure, stripping out key safety principles including the "As Low As Reasonably Achievable" (ALARA) standard. Former NRC Chair Christopher Hanson warned that "relaxing nuclear safety and security standards in secret is not the best way to engender public trust." That report is likely to surface during questioning, particularly from Democratic members of the committee.

The Lobbying Landscape Behind the Nuclear Energy Executive Orders

The nuclear industry has been actively engaged on Capitol Hill throughout the implementation period.

The Nuclear Energy Institute — the sector's primary trade association — has been the most prolific filer on nuclear energy policy and DOE programs, with lobbying disclosures spanning multiple recent quarters. Last Energy Inc., a nuclear startup, has lobbied specifically on reactor licensing and regulation. Perma-Fix Environmental Services, which works on DOE nuclear waste management, has also been active.

On the campaign finance side, PSEG's PAC (PEGPAC) has been the most active contributor among organizations lobbying on nuclear energy policy, with 218 FEC contribution records spanning recent cycles. Perma-Fix's PAC has made targeted contributions to lawmakers with direct ties to DOE oversight, including a $2,500 contribution to Rep. Chuck Fleischmann (R-TN), whose district includes Oak Ridge National Laboratory.

The committee's pre-hearing summary notes the proceeding "could shape future nuclear energy policy and funding, impacting energy security, environmental regulations, and the overall energy landscape."

What to Watch For

The safety question. Expect Democrats to press Garrish on the NPR report about rewritten safety rules. The tension between speed-of-deployment and safety oversight is the hearing's central fault line.

Deadline accountability. Several of the executive orders set deadlines that have already passed or are approaching. The committee will want to know which benchmarks DOE has met and which it has missed.

Private-sector readiness. Laufer's testimony from Kairos Power will offer a window into whether the industry can actually deliver on the ambitious timelines the executive orders envision — or whether the bottleneck has shifted from regulation to execution.

Bipartisan dynamics. Nuclear energy policy has enjoyed unusual bipartisan support in recent years, as noted in a Perkins Coie analysis of the industry's 2026 outlook. Whether that consensus holds under scrutiny of DOE nuclear implementation — particularly on safety and transparency — will be tested Thursday afternoon.

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