The Sparks are pretty strong, but they can't take cover, if memory serves, so they can be damaged extensively.
Facilities... That's a tricky one... depends on the layout of where the damaged power cells are. For focusing, I'd say clear out the second level, stick a workshop and staff it with engineers and build around it with whatever requires you to have Engies (Proving ground, warfare center, power relay, e.t.c.)
Networking... I'm not too good at that.
@DarkGemini24601 My friend, may I request your assistance?