Episode Details

In this Energy Newsbeat podcast episode, host Stu Turley sits down with nuclear experts Grace Vanderheide (nuclear fuels engineer and former Miss America) and Alina Voss (NX Atomics) to explore the nuclear industry’s pivotal moment. As the U.S. restarts decommissioned reactors and deploys advanced reactor designs, the conversation reveals that nuclear’s future hinges not on engineering breakthroughs alone, but on solving the unsexy realities: grid infrastructure, ratepayer affordability, and honest public communication.

From passive safety mechanisms to manufacturing innovation, the speakers tackle misconceptions about nuclear while confronting hard truths about cost discipline, transmission bottlenecks, and the need to engage women and younger generations in the energy transition.

Here is Grace’s LinkedIn: https://www.linkedin.com/in/gracevanderhei/

Here is Alina’s LinkedIn: https://www.linkedin.com/in/alinavoss/

1. Nuclear Fleet Expansion & Reactor Restarts

The conversation highlights the restart of decommissioned reactors (Three Mile Island, Palisades, Dwayne Arnold) and power upgrades to existing plants. Grace explains that power upgrades alone could generate the equivalent of about seven new nuclear reactors over 2-5 years—a cost-effective way to increase energy output without building new facilities.

2. Grid Infrastructure & Transmission Crisis

A critical theme is the neglected state of America’s transmission and distribution infrastructure, which is 20 years behind in many regions. Alina emphasizes that transmission has been “completely slept on” and warns that without grid upgrades, new generation capacity (whether nuclear or data centers) will face the same challenges. The grid is the “missing middle” that most Americans don’t understand.

3. Ratepayer Concerns & Energy Affordability

Both speakers stress that public fear isn’t primarily about nuclear safety anymore—it’s about electricity costs. They discuss how data centers and new energy projects risk being blamed for rate increases, and how the nuclear industry must avoid the same PR pitfalls by being transparent about costs and protecting consumers from project overruns.

4. Net Zero Targets vs. Reality

Grace and Alina critique net zero marketing as disconnected from actual energy policy. They argue that closing nuclear plants while pursuing net zero targets is contradictory, and that voluntary blackouts/brownouts represent a failure of grid planning rather than a solution. They advocate for maximizing clean energy generation rather than reducing consumption.

5. Advanced Nuclear Fuel & Technology

Grace discusses accident-tolerant fuel (ATF) and high-assay, low-enriched uranium (HALEU), explaining how 90-95% of spent nuclear fuel is reusable. Alina describes NX Atomics’ liquid metal-cooled reactors and passive safety features, emphasizing innovation in manufacturing (3D printing) and financing models.

6. Passive Safety & Reactor Design

Both experts explain passive safety mechanisms—how reactors automatically shut down without human intervention or external power (using gravity to drop control rods). This addresses public misconceptions about nuclear accidents.

7. Small Modular Reactors (SMRs) & Manufacturing

The discussion highlights SMRs as a manufacturing challenge, not just an engineering one. Alina notes that companies like Allo Atomics are building factories alongside reactors to achieve economies of scale. The key is treating nuclear as a manufacturing game, not just an engineering project.

8. Construction Cost & Timeline Discipline

Grace emphasizes that the #1 priority for nuclear expansion is delivering projects on time and on budget. She argues that nuclear engineers’ perfectionism culture conflicts with business realities, and that construction specialists—not engineers—shoul