Those are really cool!

I was thinking of printing one that's like the California example (https://github.com/open-energy-transition/grid2poster/blob/m...). Where do people print posters nowadays?

Somewhat related:

https://openinframap.org/

Really nice and OET is great

For north america also look at this https://geovizzydesigns.myportfolio.com/electricity-grid-of-... , more complete only in the US since not rely on OSM

I see two examples, India and Africa. Both of which look great but Africa is not a country.

I was really hoping these would be propaganda posters for (or against) your country’s grid.