How to add powerlines

Draw a spline defining the path of the powerlines. One pylon will be spawned per point. The spline itself won't be rendered.

Add the Powerlines.cs script and define the pylon prefab as well as the cable material. You're free to chose whatever pylon prefab you like but make sure that it has attach0, ..., attach10 empties. These will be used to compute the cable curves.

There is a custom "Spawn Pylons at Knots" context menu action. Click it.