From Shell to CP Gate was part of the old NH power grid,that MN converted to 12.5 kv 60 hz from 11kv 25hz.
Amtrak owns/controls the entire remaining PRR power grid at 12,5kv 25 hz from WAS to CP Gate.
The NJT extension to Long Branch at first used "excess" capy from the PRR grid,after CR shut down the use of
electric freight motors and the catenary needing power off the PRR grid,was converted to 25 kv 60 hz due
to maintaince problems with the older 25 hz equipment
The old DL+W DC grid was worn out and replaced with the current 25 kv 60hz grid.
Amtrak built new the 25 kz 60 hz power grid east of New Haven to Boston.
The Land of Enchantment is not Flyover country!