Aerospace Company in West Yorkshire
To replace 850 T8 fluorescent twin fittings with 600 of 30 Watt Linear Battens with built in Motion PIR and Light Level Sensors.
The results:
The annual cost of operating the existing lighting system was £93,874
Annual cost of operating LED is £14,013
Annual savings from LED is £79,861
Investment into LED was £70,952
Payback in 0.89 years
Annual ROI is 112.56%
Annual Carbon savings from LED is 343 tonnes
Lifetime savings from investment into LED is £335.468
Lifetime Carbon savings from LED is 1,778 tonnes
Workers in this pre-war factory commented the difference between the fluorescent tubes and the LED Battens is as dramatic as the difference between night and day.