The core business for the company is Power Engineering. Since 2021, the new team of ERSO has started the creation of an international holding company for the production and supply of electrical equipment and the provision of complex services in the energy sector. In addition to the Transformer Division, new business lines have been created in the holding: the EPCM Division, the Secondary Systems Division (medium and low voltage), the Service Division, the ICS and Automation Division (relay protection, smart meters, ASCAE and communications) the Innovation Division. ERSO is multidisciplinary integrated company which is focused on integrated equipment and implementation of new construction projects, reconstruction, and modernization of energy facilities. The holding company includes 4 production location, own design and research institutes, design center, service, and experimental centers.