Fences require power and instantly kill enemies. The Fence in the screenshot is powered by the power beam in the top-right corner. Players can circumvent fences with the config tool by cutting off their power.
Each fence only requires 1 post (called a Satellite by the game) and can be configured to any nearby location. The end-post is only in game for aesthetic purposes. This is shown in the second action shot. Of course, for any of this to happen, you must take over an AI base.
Players Can Acquire?:
No Plop Cost:
0 power is required to use this.