The core activity of Netzbau Gruber GmbH encompasses the construction, maintenance, and operation of energy supply networks, including: Cable construction: construction and maintenance of high, medium, and low-voltage cables; Substation construction: construction and maintenance of transformer stations and low, medium, and high-voltage lines; Overhead lines: construction and dismantling of wooden and concrete mast overhead lines in the medium and low-voltage range; Lighting: planning and installation of public lighting systems; Transport: transportation of transformers, switchgear, and other equipment; Crane work: lifting of heavy loads with specialized vehicles. The company also offers comprehensive services in the field of energy supply, including maintenance work, repairs, and disposal of old systems.