The true source of civilization’s future is energy wisdom

Introduction (Armando Cavanha of Brazil)

Twenty-five years ago, Professor Franco Battaglia wrote a provocative essay claiming that "pursuing energy saving is a foolish idea."He argued that as efficiency improves, people inevitably consume more energy, and that prosperity itself depends on greater energy use.
"The more energy we use," he said, "the better our well-being." To save energy, therefore, would mean to live worse.

Yet the statement "The first source of energy is saving" still resonates. It invites a reinterpretation, not as an economic contradiction, but as a moral and civilizational question. True saving is not deprivation; it is intelligence in utilization - the conscious alignment between human purpose and the limited natural resources of this 4-billion-year-old Planet Earth.

In today's world, obsessed with carbon neutrality and net-zero slogans, this idea becomes urgent. The challenge is not simply to consume less, but to consume wisely - to rediscover saving as an ethical act that integrates science, culture, and respect for life.

Efficiency and saving (Yoshihiro Muronaka of Japan)

For an engineer, the distinction between efficiency and saving is fundamental.

• Efficiency is a design challenge: achieving a task with the minimum input through better engineering.
• Saving, on the other hand, is often a behavioral practice: using less through habit or restraint.

Japan's experience after the 1970s oil crisis illustrates this well. Instead of moralizing about sacrifice, industries pursued technical excellence-the Top Runner approach.
They designed machines, appliances, and industrial systems to achieve maximum performance per unit of energy. In doing so, saving became a byproduct of innovation, not a constraint on it.

But to understand the deeper meaning of saving, we must remember that products, transportation fuels, and electricity are not the purpose of civilization, it is a means to serve life. They exist to serve a purpose, to enable human life and creativity. When engineers design a process-whether a factory, a power plant, or even a kitchen stove-the goal is never "to consume energy," but to achieve the intended function with elegance and precision.

Consider the act of cooking. A mother preparing dinner for her family adjusts the flame according to each ingredient-sometimes it is strong, sometimes gentle, sometimes paused. Every material, every process, has its optimal time and rhythm.

The art of engineering is similar: finding the point where nothing is wasted, and every bit of energy fulfills its role. Designers and manufacturers think about these details long before the process begins-choosing materials that are robust but not heavy, that conduct heat well, that do not cause food to stick to the pan, and that are easy to clean.

Every decision reflects a search for harmony between purpose and performance. True efficiency is not just in the moment of use, but in the thoughtfulness that shapes the entire lifecycle of the tool.

When the engineer's intention-to design for perfect efficiency-meets the hand of the mother cooking with love, the story of energy finds its completion.

Technology and humanity have become one. Energy, at that moment, fulfills its true role-not as a master, but as a humble servant in the story of life.