DC vs AC light sources - Residential

Good Morning All!

I couldn’t find whether or not this was discussed in the forum, however, in a new build I am curious what people’s weigh in’s are on AC vs DC lighting fixtures. Let’s face it, it’s been a hot debat between Tesla and Edison on which should be preferred, but with more and more homebrew automated lighting systems, why not just stick to DC fixtures and LED’s.

Would it not be significantly cheaper to integrate with lower end PLC modules? Such as an Arduino or Controllino?

With low voltage comes higher current. Thus bigger cables and more voltage drop problems. A typical AC light circuit is wired in 1.5mm2 whereas with DC light circuits ( normally done in off grid setting) is 4mm2