Kalyan-Pune is 25 KV AC Traction long ago! On 02-May-2010, I think, Karjat-Lonavala section was converted to AC. Prior to that, LNL-Pune was already AC Traction. So, from that onward, AC Locos (WAGx) started coming to Pune with goods train. Later, when KYN-Thane became AC, WAPx/WAMx locos also started coming to Pune (to begin with Jaipur-Pune Exp, NZM-Pune Duronto and Indore-Pune Exp)!