electrification is one way of advancement in technology. Diesel locos also needs improvement. but electrification is good in long way sustainable energy terms. see europe japan china they are switched over to electrics. swiss have 100% electrified network. Smart Grid technology is not developed in IR so in future wastage will be reduced and In electrified tracks diesel locos can be run but vice versa is not possible so it is good to go for electrification