Following the governments announcement of free ports, including one at Felixstowe, more freight trains and lorries will be in operation.
Was wondering if the government were to ever do some electrification the port of Felixstowe and part of the east Suffolk lines being electrified
Is this premise even correct? The precise thinking behind Freeport's is unclear - we've had them before and abolished the idea. One thing often mentioned is that goods might arrive at a freeport (by ship or, in East Midlands' case, air), have value added in some way, such as on-site processing, and then be re-exported. This wouldn't have any significant domestic transport implications but would create jobs in Felixstowe, etc.
More specifically, with electrification for intermodal trains, I have never been clear what happens when the electric locomotive ends up at the entrance to the (wire-less) terminals. Obviously bi-modes could work but that will require major investment on someone's part. But if the traction is bi-mode it could run from Ipswich on the alternative mode anyway.
If the answer is a pool of battery shunters at the port to shift the trains around there is a huge time penalty in terms of disposing of the main line locomotives, brake tests and so on, and a need for track re-modelling. Once return workings in diagrams are broken, slots lost, overall transit times for the cargo increased and equipment utilisation rates worsened the whole rail freight business model starts to unravel. Some of the flows already only survive with Mode Shift Revenue Support as it is.