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AC vs DC : electrical legacy to learn from, not to follow.

Alternating current won the heart of the XIX century

At the end of the 19 century, two visions over electricity face one another:

  • Thomas Edison, pro direct current (DC)
  • Nikola Tesla, pro alternating current (AC)

At the end, alternating current got the preference. It allows to transmit electricity over long distances. It was a revolutionary solution at the time for the need of connection between country … But today what matters is local consumption.

A century later, the world needs direct current

Laptop, phones

Internet Box, printers

LED

Sensors, cameras

Batteries, solar panels

EV

All of your equipment are powered with direct current.
But buildings are still wired with alternating current

What does alternating current look like locally?

Complex installations to wire all grids + extra cost of LED drivers

Generates 30% more energy loss

Holds back integration of new technologies

An analogy ?

Think of today’s system like bureaucracy online: every form — taxes, healthcare, insurance — needs its own separate login. Frustrating, redundant, and inefficient.

Now imagine a single, unified portal with just one login. That’s what central DC conversion does: one clean conversion at the panel, instead of dozens of little converters scattered everywhere.

Direct current… for good reasons

Look at Arc Réseaux

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