Does it make financial sense for you to use LED lighting?

Comparative calculations using a shop as an example Assumption: hours in use per year: 3,500 hours / years in use: 10 years / cost of electricity: 21 ct/kWh / 100 lights per shop

Calculation A: Comparison of 35W HIT-luminaires with 28W LED-luminaires:

Calculation B: Comparision of 70W HIT-luminaires with 28W LED-luminaires: