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The Bright Future of Nuclear Energy — and the Transformers Behind It

Blog Post | 12.05.2025 | 3 min read | Diego Hernandez

As the world accelerates its transition to a cleaner, more electrified future, the pressure is on — to find energy sources that are not just sustainable — but reliable, affordable, and scalable. Solar and wind have grown rapidly, but their intermittent nature presents real limitations. Batteries help, but they’re only part of the solution.


There’s one energy source, however, that quietly checks all the boxes: Nuclear Energy.

A Clean Comeback for a Critical Technology

Modern nuclear energy is not the same as it was decades ago. Today’s reactors are safer, smarter, and more efficient—equipped with advanced safety systems and rigorous control. Perhaps the most exciting development is the emergence of Small Modular Reactors (SMRs)—compact, flexible nuclear units that can be deployed faster, in more locations, and with lower upfront cost.

SMRs are already reshaping how nations think about their future energy mix. Their ability to produce steady, carbon-free electricity 24/7 makes them a perfect complement to variable renewables. As global energy demand rises, nuclear energy offers a unique advantage: clean power, anytime, anywhere.

But What Powers the Nuclear Power?

While nuclear reactors may capture the headlines, there’s another hero in this story — one that works silently behind the scenes.

Every kilowatt generated in a nuclear facility must travel from the reactor to the substation and into homes and industries. That journey is made possible by a vital piece of equipment: Transformers.

Transformers ensure that the massive electrical output of nuclear power plants can be safely stepped up, stabilized, and transmitted across long distances. They are the link between clean generation and real-world use.

In fact, without reliable, nuclear-grade transformers, the grid can’t operate safely — no matter how advanced the nuclear reactor is.

Transformers for the Nuclear Era

Just as reactors have evolved, transformers must evolve too. In the age of SMRs and next-gen nuclear systems, transformers must offer:

  • Uncompromising quality and safety — with seismic resilience, arc fault protection, and fire-safe design
  • High reliability and availability — to prevent unplanned outages in mission-critical operations
  • Consistent manufacturing and supply — to scale with the fast-growing demand for nuclear solutions
  • Digital intelligence — to enable predictive monitoring and performance insights across the asset life cycle

Modern nuclear power doesn’t just need reactors. It needs a new standard in transformer technology—one that can meet its demands and support a future powered by clean energy.

A New Era Is About to Begin

We’re on the verge of a global energy reset. Nations are investing in nuclear again, and new technologies are gaining traction. Behind it all, a new wave of infrastructure will be needed—engineered with purpose and built with precision for superior quality and reliability.

The next chapter of nuclear energy is about to be written, and transformers will be part of every page.

Transformers for Nuclear Energy

Diego Hernandez
Industry Network Leader, Nuclear for Transformers and Global Product Manager, Shell-type Transformers, Transformers Business, Hitachi Energy

Diego Hernandez Frisari holds an MBA and is an electrical engineer with 15 years of experience in the nuclear industry. His career at Hitachi Energy started 18 years ago, and he has held the position of Industry Network Leader, Nuclear for the Transformer Business Unit since 2024.