For anyone using K2SO with OARC, Tesla Coils won't fire when using the OARC mod.
Do you have an Absorber in your grid, and a Tesla Coil placed, but the lightning bolt animation is missing and your grid isn't being powered?
https://mods.factorio.com/mod/oarc-mod

This is because OARC changes how Forces work in the game.

To fix this so the kr-internal-turrets force is willing to 'fire' at you, run this command in the terminal:
/c local target=game.forces["kr-internal-turrets"]; if target then for name,f in pairs(game.forces) do if f.name~=target.name then f.set_friend(target,false); f.set_cease_fire(target,false); target.set_friend(f,false); target.set_cease_fire(f,false); end; end; game.player.print("All forces are now hostile to 'kr-internal-turrets'"); else game.player.print("Force 'kr-internal-turrets' not found"); end