[1] In September 2010, the Newag Gliwice company in Poland began works on the universal electric locomotive platform Elephant.

In March 2011 the works on the mixed-traffic version were in their final stages and the official presentation of the locomotive was planned for the autumn 2011 during the Trako Trade Fair in Gdańsk.

Between 18 and 31 July 2013 PKP Cargo conducted a driving test which is necessary to obtain a certificate for the locomotive.

On 28 May 2014 Newag signed a contract with Đuro Đaković Specijalna Vozila for the joint construction of the electric locomotive E4ACU type, which included technology transfer and exchange of know-how in the area of the production of electric locomotives.

Each cab is equipped with two independent panels that display the drive parameters, a diagnostics module and event recorder with a speedometer function, a two-module climate control system and rear-view mirrors with a monitor for four cameras.