ler totalmente INNER DEGROWTH: From Energy Collapse to Existential Void (English Edition)

For decades, our civilization believed it had found the path to fulfillment.

More energy. More speed. More consumption. More control over the material world.

But as the material world continued to grow without pause, another, quieter feeling also began to spread: exhaustion, anxiety, emptiness, and disconnection.

We live in a civilization that promised infinite material fulfillment. But the more it grows, the more emptiness it creates.

Drawing on his experience in the energy sector, Marcos Rupérez Cerqueda explores the physical limits of industrial civilization and the profound existential unease that emerges when the material world can no longer give meaning to our lives.

An industrial engineer with a master’s degree in hydrogen technology from Denmark and an MBA from Instituto de Empresa, Rupérez is one of Spain’s most recognized green hydrogen consultants. He experienced the promise of the energy transition from the inside—and also underwent his own personal collapse when that promise could no longer sustain him.

This is not merely a book about oil, energy, or collapse.

It is a reflection on consciousness, desire, and the silence that emerges when everything we trusted begins to fracture.

Because when that structure begins to break apart, a deeper question arises:

What remains when the material world can no longer sustain us?

This book is for you if:

— You feel that something does not add up between the official narrative of the “energy transition” and what you observe in the reality of our civilization.
— You work in energy, sustainability, or technology and find yourself asking questions that no one around you wants to answer.
— You are interested in ecological and energy collapse but are looking for something that goes beyond facts and figures.
— You are going through your own process of questioning life and are looking for honest companionship rather than easy answers.
— You have read Antonio Turiel or explored degrowth and the physical limits to growth, and you want to examine what comes after accepting that reality.

What you will find in these pages:

The first part uses the rigor of someone who has worked inside the energy sector to dismantle the myths of the renewable energy transition: why hydrogen will not save us, why renewables cannot replace oil in the areas that truly sustain civilization, and why 80% of the energy we consume—the energy you cannot see coming from an electrical outlet—is what really matters.

The second part turns that same honesty inward: what happens to a mind that has built its entire identity around material growth when that growth is no longer possible. And why personal collapse and civilizational collapse are, at their core, driven by the same mechanism.

The third part offers neither easy comfort nor replacement technical solutions, but something more uncomfortable and more real: what remains when we let go of the need for the material world to save us.

About the Author

Marcos Rupérez Cerqueda is an industrial engineer with a master’s degree in hydrogen technology from Aalborg University in Denmark and an MBA from Instituto de Empresa. He was the technical lead for the energy system of the first 100% renewable sailboat to complete the Vendée Globe and participated in the design of the first electric car to compete in the Dakar Rally. He is one of Spain’s most recognized green hydrogen consultants and one of the most widely followed Spanish-speaking voices discussing energy and its limits on LinkedIn and YouTube. This is his first book, in which readers will also discover his more introspective side, shaped by his experience as a meditator and by the way he connects these two worlds.

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