On 14 October 2021, UL started the next stage of assembly of the new electric locomotive.
The eighth edition of the „Railway Salon“, originally known as EXPO 1520 and for the second time under the new name Pro//Motion.Expo (Russian: Pro//Dvizhenie.Ekspo), was held at the VNIIZhT Shcherbinka from 26 to 29 August 2021. Its organiser is now the Moscow-based transport publishing house Gudok („siren“ or „whistle“).
On 1 September 2021, Uralskie lokomotivy has obtained a unified certificate of compliance with the TR TS 001/2011 standard for its Class 3ES6 and 4ES6 electric locomotives.
On 15 June 2021, RUSNANO, RZD and Sinara Group have signed an agreement on cooperation in the development of main line and shunting freight locomotives using power plants based on electrochemical hydrogen fuel cells in conjunction with lithium-ion batteries.