- extension, strengthening, securing and deletion of low and high voltage electrical energy distribution networks (LV and HVA),
- installation of transformer station (HTA / BT). The SDEF has a separate market for the supply of transformers and transformer stations. The same applies to the destruction and reconditioning of transformers,
- extension, renovation and erasure of public lighting networks, site and building lighting works, lighting of sports grounds,
- construction of electronic communications networks (civil engineering and wiring) as part of the work common to the above work,
- various works related to connected objects, video protection and electronic communications,
- video surveillance.
- extension, strengthening, securing and deletion of low and high voltage electrical energy distribution networks (LV and HVA),
- installation of transformer station (HTA / BT). The SDEF has a separate market for the supply of transformers and transformer stations. The same applies to the destruction and reconditioning of transformers,
- extension, renovation and erasure of public lighting networks, site and building lighting works, lighting of sports grounds,
- construction of electronic communications networks (civil engineering and wiring) as part of the work common to the above work,
- various works related to connected objects, video protection and electronic communications,
- video surveillance.
- extension, strengthening, securing and deletion of low and high voltage electrical energy distribution networks (LV and HVA),
- installation of transformer station (HTA / BT). The SDEF has a separate market for the supply of transformers and transformer stations. The same applies to the destruction and reconditioning of transformers,
- extension, renovation and erasure of public lighting networks, site and building lighting works, lighting of sports grounds,
- construction of electronic communications networks (civil engineering and wiring) as part of the work common to the above work,
- various works related to connected objects, video protection and electronic communications,
- video surveillance.