I’ve not seen any figures for the initial costs and running expenses for charging points but with the cost of diesel fuel rising by the day and a desire to work towards reducing carbon emissions, this has to be worth looking at. Clearly Vivarail don’t deem further development with diesel engines to be worthwhile.
Regarding charging point locations, Wrexham Central and either the headshunt at Bidston or the back platform at Birkenhead North seem to be the obvious choices. Depending on costs, perhaps a third installation at Shotton for added security of supply.
Given the desire of the Welsh Assembly Government to have through trains to Liverpool, which can only realistically be achieved by using battery equipped 777s, any modifications to the TfW Class 230s would have to be done with an eye to costs and to moving them on in a few years time.