History of ĐĐ TEP

Brod on Sava (since 1934 Slavonski Brod) has got ideal location somewhere in the middle of the road between  Zagreb and  Belgrade, as well as Sarajevo, southward from the river Sava. After the annexation of Bosnia and Hercegovina by Austria-Hungary in 1878, when Austria-Hungarians crossed the river in Brod on the Sava and set off further towards Sarajevo, that very same year began construction of the railway line, connecting newly acquired territories with the rest of monarchy. Already in the next year, Brod on the Sava and Bosnian Brod were connected with railway line over the temporary railway bridge, and both cities became important railway junctions which were helpful in the development of trade in this region and attracted workers from all parts of the country.  Precisely 40 years later, this powerful impact of railway line gave an impulse to the construction of the Factory for Wagons and Machinery. Rolling stock of the state railways in the years 1918 and 1919 was in such dire condition that demands for overhaul gave prospect for full employment of larger factory capacities.

Substantial development of Slavonski Brod as traffic and trade center between east and west, south and north of our country, founding of the first Factory for wagons and bridges – present day Đuro Đaković brought about sudden economic development in the twenties of the past century, which is why this time period is called “Brod golden age”.



Company Đuro Đaković TEP was the constituent part of the Group Đuro Đaković, company founded in   17.02.1921. as „THE FIRST YUGOSLAV FACTORY OF WAGONS, MACHINERY AND BRIDGES Ltd.“ in Brod on the Sava (since the year 1934 Slavonski Brod). The town gave at disposal 100 acres of land, and in return, the factory provided the town with electric energy.

Electric Power Station 1500 HP with 65 m chimney (the highest in the then Yugoslavia)


The factory started with production activities (wagon overhaul)


The factory ensured employment for  1200 workers


The first steam locomotive  “Sava” was built in this factory in 1926 for narrow track railway lines. That year when the first steam locomotive was produced can be considered as the year when production of steam boiler plants started.


The first boiler for the customer “Water Co-partnership Direction”  in Velika Kikinda designed and delivered


Several boiler units of different types and sizes developed. The capacity of those boiler units amounted up to 20 tons/hour, which for our region at that time meant very big success. At that time that was the only factory of boiler units in the region.


Brod on the Sava changed its name into Slavonski Brod.


Types of boiler units produced in that time period were: stationary boilers with rigid grate,  locomotive boilers,  sectional boilers with mechanical grate surface (area),  LaMont boiler with mechanical grate surface (area).  Production of such complete steam generating units in the factory displays high technical level of professional expertise of the staff: craftsmen, technicians, and engineers.

Pneumatic forging hammer


The factory temporarily ceased to produce due to significant material damage as the result of heavy bombardment.

Traces of aerial bombardment in the factory area


After the 2nd WW town Slavonski Brod passed through horrific bombardments and was one of the most destroyed towns in the state with 80% annihilated living and accommodation facilities. The factory area also demanded large rebuilding and renovation efforts. The town itself was of extraordinary strategic importance because it was the main retreat line for all German troops from east and south of the Balkan peninsula. On 19th of January 1945, ally bomber planes delivered 7000 bombs and totally destroyed both cities on the river Sava.


Re-building of the factory. 1.330 workers employed.


The factory changes its name into ĐURO ĐAKOVIĆ Industries of locomotives, machinery and bridges, Slavonski Brod, and develops its operational activities within the Yugoslav first five-year plan. 1947 -1951. The building of large and modern boiler units, as well as the complete power plant facilities, has begun.


Contract with the well-known company Babcock & Wilcox on business and technical cooperation in the field of engineering, production, and erection of power plants was concluded. The factory employed 2.500 workers and clerks.


Up to that year the factory produced boiler plants for factories, mines and steel factories for different kinds of fuels,  several oil-fired boilers, auxiliary flue gas marine boilers. Different kinds of angle tube boilers, utilization boilers were manufactured. In that year Society for Welding Technique within the entire Đuro Đaković was founded. ĐĐ welders became by far the best welders in the former country.

Marine steam boiler


The factory changes its name into Đuro Đaković Industries,  Rolling stock, Industry and Power Plants, Slavonski Brod. Time , towards the end of fifties, was significant for development of production of boiler plants, so that in the time period from 1958 – 1968 considerable number of boilers of all kind from 1 to 400 tons steam per hour (vertical steam boilers, angle tube boilers, marine steam boilers, steam block boilers and etc. were delivered).

Steam block boiler


The decision was brought on the foundation of the Center for part-time study in Slavonski Brod, which was organized by High Technical School in Zagreb. The first engineers of mechanical engineering were promoted in 1964, and the first graduated engineers of mechanical engineering in 1966. A year after that the part-time study of the Faculty for Mechanical and Naval Engineering was founded in Slavonski Brod. Nowadays, this institution is the Faculty of Mechanical Engineering in Slavonski Brod.


It can be said that in 1960-is the entire  “Đuro Đaković” ceased to be the factory for patching up, repair and overhaul, and started to deliver more and more new wagons, locomotives, motor trains, trams, boilers, columns, bridges, and similar facilities.


Đuro Đaković employed 4520 workers. In those years Đuro Đaković extends its production program to the oil and petrochemical industry. Participation in production of boiler plants in the former state amounts to 12 %. Heavy earthquake hits Slavonski Brod on 13th of  April 1963 destroying about 7000 objects, resulting also in heavy damage of the factory facilities.

Sugar factory Bitola


Thermal Power Plant Makassar, Indonesia


Đuro Đaković has become the largest manufacturer of  Steambloc boilers in the world. Share in total boiler production number of the former state was 25%. Đuro Đaković employed  5.575 workers. Cooperation with the Swiss company Sulzer on Thermal Power Plant  Plomin I, power capacity 120 MW.

Steambloc boilers for Cuba


Cooperation with company Wanson (Belgium) on Waporax and Thermopac boiler program.


Years from 1971 to 1975 were years of powerful development and full confirmation of technical cadres of “ĐĐ”. For needs of boiler manufacture  Šoštanj IV and Plomin I reconstruction of the pipe manufacture shop was carried out by procurement of new machinery arranged in the “industry production line”. From welding point of view that meant a new machine for welding of membrane walls, new machinery for the preparation of welding edges,  reconditioning and auditing of machinery for electric resistant automatic spark welding, numerous audits…

PP Plomin I, capacity 120 MW


With company Babcock Power Plant NEKA Iran capacity 4×400 MW, power plant Šoštanj  (Slovenia) capacity 330 MW by Sulzer license. Đuro Đaković was divided into 36 independent companies. This year can be considered as foundation year of the nowadays ĐĐ TEP.

PP Šoštanj Slovenia 330 MW


Renovated building of the former gymnasium, nowadays Faculty of Mechanical Engineering on Ivana Brlić Mažuranić Square opened.


Building of Workshop for Heavy Equipment Production “ĐĐ” became recognized as manufacturer of capital objects in the world. It started with the building of Nuclear Power Plant Krško when new norms in work of ĐĐ experts were introduced.

Heat Exchanger for NPP Krško


Boilers manufactured and erected for the  Chinese Petroleum Corporation u China, Sharjah Electricity Department in the United Arab Emirates, La Kadicha Tripoli in Lebanon.


All entities of Đuro Đaković employ in total  16.339 workers, out of which number 1.024 with high school education, 37 masters of sciences and 9 doctors of sciences. That was the highest number of employees since the foundation of the factory.


In Homeland War 1991-1995 Slavonski Brod is again, due to its strategic importance, entangled in war chaos. Bridge over river Sava toppled for the third time in the last 50 years. All organizations within Đuro Đaković continue with their business operations in spite of large material damage within the circle of the factory. Workers come and travel every day to their work under gun and mortar grenades.

Moment of Air Attack on Bridge


Because the large part of domestic market on which ĐĐ developed its activities decreased due to the dissolution of the former state, qualitative entry on foreign markets through the conclusion of international partnerships became one of the goals of ĐĐ management. In process of privatization, the Austrian AE Energietechnik GmbH buys 51% of shares. The restructuring of the company and transfer of management information and orientation on engineering and production of industrial boilers began.


ĐĐ TEP participates in the building of  EL-TO Zagreb. In the previous year relocation of 2 gas turbine aggregates EGT PG 5371 PA 2×26 MW with auxiliary equipment from location Dujmovača (Split) and completion to location PTE Zagreb was signed. One of the first EPC contract where ĐĐ TEP completed design, delivery, civil works, transport and erection works.


PP Plomin II, 210 MW- finished steam generator plant according to Sulzer license. German Babcock Group takes over AE Energietechnik GmbH, and also ĐĐ TEP in the packet, which becomes part of the group Babcock Borsig Power – Austrian Energy.

PP Plomin II, 210 MW – steam generator plant finished according to Sulzer license  (Consortium: Supplier AE&E, Siemens, ĐĐ TEP).


AE Energietechnik GmbH, that is to say, Babcock takes over 100% shares of  ĐĐ TEP-a, which becomes the member of the Group Babcock Borsig Power with the seat in Oberhausen.

Welding of Membrane Walls


After German Babcock announced bankruptcy, the Austrian A-TEC Industries AG takes over AE  Energietechnik GmbH, so that ĐĐ TEP found itself again as part of AE-a and Austrian property. The owner changes again name and form of the company into Austrian Energy & Environment AG & Co KG (AE&E), ĐĐ TEP reshapes itself into the company with limited responsibility, Ltd. or Croatian d.o.o.

Transport of castings and flue gas channels


Water-tube boiler fired with combine fuel combustion 1×116 MWt for EL-TO Zagreb, construction of cogeneration power plant, 100 MWe/80 MWt for TE-TO Zagreb, projects of waste fired boilers in Austria, Germany, Belgium, and the Netherlands.


AE&E AG & Co KG becomes  AE&E Group GmbH. Projects for construction and erection of waste incineration boilers in France, Germany, Austria, Switzerland, and Canada.

Neurath, the largest power plant in Germany


Due to excessive growth and too large investments as well as some other big mismanaged projects A-TEC Industries AG was forced to initiate insolvency procedure. The same case happened to AE&E at the end of the year. In spite of the new situation and recession on the market, ĐĐ TEP continues with its business activities.

Membrane modules for horizontal pass


Andritz group from Graz takes over AE&E bus only its Austrian subsidiaries. Companies from other countries which were members of AE&E Group were sold to Japanese, South Korean and German investors.

Port at Baltic Sea and waiting for loading of transportation to Finnland


Production, transport, erection and commissioning of boilers and boiler equipment for biomass and waste to energy power plants,
in all major European cities.

Membrane walls


Manufacture and erection of boiler pressure parts on the biggest waste incineration plants in Finnland, Denmark, Great Britain, and Ireland. The first cogeneration plant on biomass, Slavonia DI.

The lifting of membrane walls on site


Putting into operation of the first cogeneration Slavonia DI in Slavonski Brod (5MWe+8MWt). Three new cogeneration plants contracted, for the domestic market in Glina, Virovitica, Đakovo.


Cogeneration of Wood Biomass in Đakovo (3,6 MWe, 8 MWt)


ĐĐ TEP management moves into the new office building. ĐĐ TEP offers complete power plant solutions for biomass and waste to energy.

New company office building

Slavonski Brod receives its citizen, the football player Mario Mandžukić, 
after finals of the World Football Championship in Russia. 

Cogeneration of Wood Biomass in Slatina (5,7 MWe, 5 MWt)