1952 - Establishment of the company Energetické strojírny Brno, n.p. by a governmental decree for the establishment of a repair center for Czechoslovakian Power Supply.
1952 – 1991 - Energetické strojírny Brno, n.p. as an part of the Czechoslovakian National Power Supply in the framework of ČEZ – production, transmission and distribution of electrical energy.
1992 - Formation of the joint-stock company Energetické strojírny Brno, a.s. in the framework of the privatization process.
2007 – Break up of Energetické strojírny Brno, a.s. and establishment of the new joint-stock company ESB Rozvaděče, a.s. on the 8th of October 2007.