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Gaspar do Amaral

Energy and the power system · Article published on LinkedIn on 29 April 2026

The Illusion of Wilful Blindness: When SMRs Are Mistaken for “UFOs”

Small modular reactors are not UFOs: what engineering sees on the ground and on the system’s bill

Gaspar do Amaral · 29 April 2026

Translated from the Portuguese original. This version was issued on 30 October 2026.

Original illustration of the article, with its texts in Portuguese. Title: “A ilusão do invisível: SMRs e a realidade da engenharia” (The illusion of the invisible: SMRs and the reality of engineering). On the left, a flying saucer over the Tagus estuary (“OVNIS”, UFOs) and a group of men in suits pointing at the sky, holding newspapers headlined “Energia barata?” (Cheap energy?) and “Onde estão os SMRs?” (Where are the SMRs?), with the quotation “Mini reatores nucleares são como ovnis… ouvi falar mas não vi nenhum” (Mini nuclear reactors are like UFOs… I have heard of them but never seen one). On the right, “SMRs reais (reator modular pequeno)” (Real SMRs, small modular reactor): a cut-away of a reactor on a quay, with labels for the HTGR core (Generation IV, passively safe, meltdown-resistant), the helium flow, the turbine and generator, and “potência firme e despachável” (firm, dispatchable power); a bar chart “Total System Cost (TSC) vs. LCOE” comparing an SMR-integrated grid with an intermittent-only grid; boxes for “inércia física real (50 Hz estável)” (real physical inertia, stable 50 Hz), local supply chain and “Lei REI”; and photographs of four cases: Shidao Bay, Akademik Lomonosov, Linglong One and Darlington. © Aprecisa.com
Original illustration of the article, with its texts in Portuguese. Title: “A ilusão do invisível: SMRs e a realidade da engenharia” (The illusion of the invisible: SMRs and the reality of engineering). On the left, a flying saucer over the Tagus estuary (“OVNIS”, UFOs) and a group of men in suits pointing at the sky, holding newspapers headlined “Energia barata?” (Cheap energy?) and “Onde estão os SMRs?” (Where are the SMRs?), with the quotation “Mini reatores nucleares são como ovnis… ouvi falar mas não vi nenhum” (Mini nuclear reactors are like UFOs… I have heard of them but never seen one). On the right, “SMRs reais (reator modular pequeno)” (Real SMRs, small modular reactor): a cut-away of a reactor on a quay, with labels for the HTGR core (Generation IV, passively safe, meltdown-resistant), the helium flow, the turbine and generator, and “potência firme e despachável” (firm, dispatchable power); a bar chart “Total System Cost (TSC) vs. LCOE” comparing an SMR-integrated grid with an intermittent-only grid; boxes for “inércia física real (50 Hz estável)” (real physical inertia, stable 50 Hz), local supply chain and “Lei REI”; and photographs of four cases: Shidao Bay, Akademik Lomonosov, Linglong One and Darlington. © Aprecisa.com

Irony is a tempting rhetorical tool, but it becomes dangerous when it runs into the reality of physical engineering and thermodynamics. Recently, in statements to the Jornal de Negócios, it was claimed that Small Modular Reactors (SMR) “are like UFOs: I have heard of them but never seen one”.

In Systems Engineering we do not look to the skies in search of science fiction; we look at the ground, at reinforced concrete and at the bill for the Effective System Cost (System LCOE). Calling this technology a “UFO” is not just an unfortunate metaphor; it is a public confession of the industrial illiteracy that governs our energy planning.

So that “seeing” does not depend on beliefs, let us decode these reactors with facts and geography:

1. The False Novelty: Naval Propulsion

The claim that a small reactor has “never been seen” reveals a deep industrial amnesia. The navies of the great powers have operated fleets of nuclear submarines and aircraft carriers for seven decades. The reactor of a nuclear submarine is, in essence, an SMR: a pressurised water reactor (PWR), modular and compact, operating in extremely hostile environments without emitting a single gram of CO2. The civil SMR is not “new physics”; it is the transfer of a mature and highly safe military technology to the commercial grid.

2. In the East, the “Hardware” Is Already Earning

The UFO argument only survives inside the European bubble of Inércia Síncrona Administrativa (Administrative Synchronous Inertia). In the East, these machines are already connected to the grid, producing electrons and generating revenue:

🔹 Shidao Bay (China): the world’s first commercial Generation IV SMR (HTGR) entered full operation in December 2023. It produces 200 MWe and is physically immune to core meltdown. 🔗 Details of the operation

🔹 Akademik Lomonosov (Russia): a floating nuclear power plant equipped with two 35 MW SMRs. It has supplied heat and electricity to the grid in the Arctic since 2019. 🔗 IAEA - Lomonosov

3. Concrete and Certification in the West

While Portugal hesitates, others are moving ahead to secure their energy sovereignty:

🔹 NuScale Power (USA): the design of its SMR (VOYGR) was formally certified by the NRC in 2023. The world’s most rigorous regulator does not audit “unidentified objects”; it audits mathematics and passive safety. 🔗 NRC certification

🔹 Darlington (Canada): Ontario Power Generation has begun physical site preparation to install GE Hitachi’s SMR (BWRX-300) in 2028. 🔗 Darlington project

The Verdict of Engineering: the Abismo do Rigor (Abyss of Rigour)

The underlying problem is not whether the technology exists, but the refusal to account for its systemic value. As masters such as Vaclav Smil and Dieter Helm warn, the economy is a subsystem of thermodynamics. Focusing only on the LCOE of intermittent sources is a design error: 100 MW of solar power guarantee only 5 to 15 MW of “firm capacity”.

Without the Physical Inertia and the dispatchable power that nuclear provides, the grid becomes stochastic and fragile. Trying to run a modern electricity system without physical ballast is to plunge the country into the Abismo do Rigor.

Conclusion: the Urgency of the Lei REI

The time has come to abandon “climate emotion” and adopt scientific rigour. I propose the immediate implementation of the Integral Energy Responsibility Act (Lei de Responsabilidade Energética Integral, REI). No developer should inject variable energy into the grid without taking full responsibility for the stabilisation costs that its intermittency imposes.

We are not facing UFOs. We are facing an industrial revolution that the West has decided to ignore. And in the end, the bill for this wilful blindness will be issued by Physics and paid by the consumer.

References and Scientific Grounding

📖 Other articles by Gaspar do Amaral:

Gaspar do Amaral

Methodological note

What this page is. A translation of the article the author published on LinkedIn on 29 April 2026; the full Portuguese version is on this site. The article has no calculations of its own: the figures (200 MWe, two 35 MW SMRs, 100 MW of solar for 5 to 15 MW of firm capacity, the dates) are those of the sources it cites, exactly as in the original.

The author’s concepts. Abismo do Rigor (Abyss of Rigour), Inércia Síncrona Administrativa (Administrative Synchronous Inertia) and the Lei REI (Integral Energy Responsibility Act) keep their Portuguese names, with a translation at the first occurrence.

Changes of form, not of content. The section headings, which are bold paragraphs in the original, appear as headings. The links in «Other articles» now lead to the translations on this site instead of LinkedIn; the hashtags were left out. The original illustration is reproduced with its Portuguese texts and a translated caption.

The discussion is on LinkedIn (in Portuguese)

Comments on this text are made on LinkedIn, where the article was shared in Portuguese. You are welcome to write in English. Agree, disagree or add data: every well-founded objection receives a reply.

Gaspar do Amaral · Original in Portuguese of 29 April 2026, published on this site; translation issued on 30 October 2026 · Figures and tables © Aprecisa.com · AI-assisted

How to cite: Gaspar do Amaral (2026). A Ilusão da Cegueira Voluntária: Quando os SMRs são Confundidos com "OVNIs". Zenodo. https://doi.org/10.5281/zenodo.23814380 · Permanent archive on Zenodo.