I was asking this based on what they released to press when they completed and inaugurated SRR-MAQ, The press release said they would need around 17 additional loco, and have requested railway board for more loco allocation.
Source:
click hereInfact they removed existing e-loco links of passenger trains operating in TVC/Ernakulam side and SRR-Kannur when they shifted Ernad, Malabar, Mangalore SF Exp, Parasuram to e-loco.