Replacement of luminaires metal-halide luminaires for luminaires with LED technology. The luminaires with LED technology chosen were Bayled 170. This is the perfect luminaire for lighting production centres, logistics warehouses, sports centres, etc. They have a high light output and great flexibility thanks to the choice of different degrees of aperture. The installation of Bayled luminaires led to significant annual savings of 24,116 kWh per year and a reduction of 8,440 kg in CO2 emissions.