| Subject | Customer | Country |
|---|---|---|
| Transformer tanks | Končar Power Transformers | Croatia |
| SIEMENS AG Transformers | Germany | |
| SMIT Transformers | The Netherlands | |
| KONČAR D&St. | Croatia | |
| EBG Transformatoren | Austria | |
| SGB Regensburg | Germany | |
| ALSTOM Transformateurs de Puissance | France | |
| ALSTOM Schorch Transformatoren | Germany | |
| Locomotive and rail road transformer tanks | Končar Power Transformers | Croatia |
| ALSTOM Transformateurs de Puissance | France | |
| EBG Transformatoren | Austria | |
| Turbo and hydro generators | KONČAR Generators | Croatia |
| JEUMONT FRAMATOME ANP | France | |
| ELIN Motoren | Austria | |
| VA TECH HYDRO | Austria | |
| ALSTOM Power | France | |
| Flexible winding mandrels | Končar Power Transformers | Croatia |
| ABB Strömberg Power | Finland | |
| ABB Transmit | Finland | |
| ABB Secheron | Switzerland | |
| ABB Power Transformers | Vietnam | |
| SGB Regensburg | Germany | |
| Heat exchangers | KONČAR Generators and Motors | Croatia |
| Končar Power Transformers | Croatia | |
| Coatian El. Power Corporation | Croatia | |
| Special machinery | Doeries Scharman | Germany |
| PEGARD PRODUCTICS | Belgium | |
| KONČAR D&St. | Croatia | |
| Končar Power Transformers | Croatia | |
| AUBEMA Maschinenfabrik | Germany | |
| BöGER Stahlbau | Germany | |
| Tamrock Voest-Alpine Bergtechnik | Austria | |
| NELCON | Netherland | |
| SMIT Transformers | Netherland | |
| Drying Owens | HEDRICH Vacuum Systems | Germany |
| KONČAR D&St. | Croatia | |
| Končar Power Transformers | Croatia | |
| SMIT Transformers | Netherland | |
| Isolated phase busbars | ALSTOM POWER | France |
| KONČAR - Inženjering za energetiku i transport | Croatia | |
| Coatian El. Power Corporation | Croatia | |
| Tram and train chassis | KONČAR Electric Vehicles | Croatia |