Aerospace Company in Lancashire
To replace 105 of 250 Watt SON Low Bay lamps with the same number of 100 Watt UK Premier Low Bay LED Lamps. Samsung LED and Tridonic Driver and built in PIR Sensors.
The results:
The annual cost of operating the existing lighting system was £24,075
Annual cost of operating LED is £7,871
Annual savings from LED is £16,204
Investment into LED was £30,340
Payback in 1.87 years
Annual ROI is 53.41%
Annual Carbon savings from LED is 61 tonnes
Lifetime savings from investment into LED is £92,744
Lifetime Carbon savings from LED is 341 tonnes
At this site the light levels are audited by Rolls Royce and after switching to LED, for the first time, the light levels achieved the standards laid down.