So I found out in my save of SCP: CB that there is no electrical center at all, making the game incompletable. Now I figure its a bug that its not always generated in a seed.
Are you absolutely sure? There was this time when I had a seed that forced me to go through SCP-860-1 (the Forest) in order to reach another part of the Entrance Zone.
There can also be several bits of disconnected Entrance Zone, so you'd have to cover the map entirely to be certain.