The electrification of the Dovre Line in the late 1960s forced NSB to buy a more powerful universal locomotive than the El 13. Based on the Swiss Ae 6/6 and NSB El 13, both developed in the 1950s, the El 14 introduced three-axle bogies in Norway while the power was increased to 5,097 kW (6,835 hp) and the weight reduced to 105 tonnes (103 long tons; 116 short tons); remaining more powerful than its successors El 16 and El 17.[1]
With the delivery of more powerful El 18 in 1996-97, the El 14s were transferred to freight service alone, with the maximum speed reduced from 120 to 100 km/h (75 to 62 mph). The only scrapping occurred in December 2005 when one hit a large pile of rocks from a landslide near Evanger, Hordaland.[1]