The Butler substation also provides power for the Broad Street Line, which is why it was rebuilt.
Considering that the average (i.e. non-transit/rail/bus fan) SEPTA commuter doesn't even CARE what their vehicle is, just as long as it shows up reliably every day, is it any surprise that there is no action over restoring 23 and 56 to rail? When the trackless trolley lines were operating, I continually heard people referring to the TT coaches as "buses". On past fantrips with PCC's along the Route 23, we would roll up to various corners, and regular paying riders would try to board the car, then get upset when we tell them that we're not a revenue car.
Now that I have that vent off my chest, I was told back in 1996 that at that time, they would need 78 trolleys (includes spares) to operate 15, 23, and 56 at that time. Applying that number now, when you talk about a bus costing about $320,000 vs. an LRV running $3 million per unit....that is cash not in the SEPTA budget. Add to that the fact that the 23 would need electrical infrastructure improvement and maintenance facilities for a fleet.
Of course, with the 56 gone forever east of the Torresdale & Hunting Park Avenue turnaround by North Catholic, the odds that we will see 56 and 23 ever run as rail again in our lifetimes? Zero.
Although I do hope that I turn out wrong.
"CSX Detector. Milepost Six Point Four. No Defects. Repeat: No Defects. Total Axles Seven Four Seven. Detector Out"