By extra training for working on power plants we have gained a lot of experience. The works were performed on transformer stations in Sombor, Alibunar, Padinska Skela and Inđija. The project mission included the works on upgrading voltage transformes and substations inside the plant. Already existing facilities and different types of systems were reconstructed. Rainwater sewage disposal and bath oil collection were built while the old plant equipment was replaced and electrical works were done.