Already Chairman of IR give his verdict about energy saving about both conv & 3 Phase Electric Loco in /blog/post/1501149
I have already made enquiry to SER regarding this WAP-7 issue in it's TATA ELS citing the reference of Point No:3.1 of 1st PDF Document about the Inspection Remark by Mr Kul Bhushan Member Electrical, Railway Board on his visit of SER TATA ELS on 18th & 19th May'2012 which is shared here in /blog/post/1496969.(Reply is still awaiting from SER)
However SER's crew is very poor in handling Locomotives than ER which...
more... has been shared through /blog/post/1500779.
Don't know what will happen. But if the Chairman's statement in /blog/post/1501149 will make MANDATORY then SER may be compelled to allot 3 Phase in it's TATA ELS.