Your definition for the "large-electric-pole" is somewhat outdated. It's referencing fields which no longer exist in the PowerPolePrototype class.
- vehicle_impact_sound: doesn't exist, and doesn't seem to have been replaced with anything. No idea what defines that sound now.
- drawing_box: doesn't exist, I believe it's been replaced with drawing_box_vertical_extension, which is just a double primitive.
- collision_box: still exists, but you've commented it out, I presume in an attempt to make the power pole not collide with structures underneath. Unfortunately, the game enforces a one-tile collision box in the middle of the entity, which for your image means it collides high up at the top.
Would you be OK with me messing with your mod? I'd like to redo the power pole entity and maybe check if the recipe/item/tech are up-to-date with 2.0. I know you've released this under public license, but it's still prudent to ask.