The E 94 was developed directly from the E 93 and was to be used on difficult mountain ramps not only in Germany but also in Austria, which had just been annexed. Externally, it differed from the E 93 mainly in the perforated longitudinal beams of the bridge frame. As a war electric locomotive, domestic materials were increasingly used in production. The Bundesbahn took over most of them and used them in southern Germany until 1988. In the 1950s, even 43 new locomotives were built with a significantly increased hourly output. While the Reichsbahn had only received a few locomotives, the ÖBB still had 44 units. These were later modernized and some were used until 1995. 