Teleport items from planet to planet, as long as you can spare the electricity.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
does the teleporters need to be powered on both ends to be able to teleport? and if so I would clarify this within your description and if it doesnt also clarify that please.
Yes, both ends of the teleporter need to be powered.