The Car Park illustration below shows very clearly the huge savings by swapping from the standard 40watt lamp to 18 watt LED. This car park has 900 incandescent 4 foot tubes which are on 24/7. Most last maximum one year, some last no more than 6 months. When we did the survey 30 % had blown and had yet to be changed.
| 1200mm (4 foot) | LED | Fluorescent |
| wattage | 18W | 40W |
| Lifespan | 75,000 hrs (10 yr+) | 6,000 hrs (1 – 1.5 years) |
| Brightness Device | n/a | required |
| Power Consumption | 18W | 44W due to ballast |
| Power usage at 168 hours per week (7 x 24 hours) | 3 KWHrs | 7.39 KWHrs |
| Power usage at 168 hours per week, for 1 year | 156 KWHrs | 384.4 KWHrs |
| Running cost per year (AED 0.33 per KWH) | AED 51.50 | AED 126.85 |
| Illustration – Total costs | ||
| Total bulbs installed | 900 | |
| Approximate cost of replacement | AED 226,800.00 | |
| Total savings in running costs | 1 year | 5 years |
| Assuming 168 hours per week | AED 67,815.00 | AED 339,075.00 |