LED Cost Saving Analysis
LED Cost of Ownership - Changing Son High Bay to LED Lighting
This case study concerns a small warehouse operation running at 24 Hours, 7 days a week.
The clients requirements were simple:
- Improve Health & Safety by increasing the light level
- Use White Light making it easier for workers to read the racking labels
- Reduce Energy Costs
- Reduce Maintenance Costs
Our initial approach was to develop the scheme around the existing fitting locations. The existing layout and spacings steered us towards the Haydos Linear Range as the photometry is designed perfectly for mounting between racking at a high level.
Existing - 150Watt Son-T Lamp Replacement - Haydos Linear 60W - 60° x 90° Beam
Existing System Data:
| Quantity of fittings | 14 |
| Luminaire Wattage | 150W |
| Total Wattage KW | 2.10 |
| Burning Hours Per Year | 8760 |
| Energy Cost £/KWhr | £0.13p |
| Total Energy Cost Yearly | £2391.48 |
| Maintenance Cost Yearly | £250.00 |
| Cost of Installation | £0.00 |
New LED System Data:
| Quantity of fittings | 14 |
| Luminaire Wattage | 60W |
| Total Wattage KW | 0.84 |
| Burning Hours Per Year | 8760 |
| Energy Cost £/KWhr | £0.13p |
| Total Energy Cost Yearly | £956.59 |
| Maintenance Cost Yearly | £0.00 |
Calculated Savings by changing to LED:
| Initial Outlay with Installation | £5300 |
| Running Cost Yearly | £2641 |
| Maintenance Cost | £0.00 |
Energy & Zero Maintenance Savings will provide a payback against the installation cost of this scheme which is calculated at 3.15 Years
The LED lighting products used on this scheme also qualified for ECA or Enhanced Capital Allowance which is a 100% tax relief under the ECA scheme for energy saving technologies. Follow the link for further information.
Design Summary
The use of a White 4000K LED Light source instantly provided a fresh new look to the whole space which resolved all issues surrounding Health & Safety along with solving the picking error problems the client was experiencing from poor lighting across the racking face or vertical plane. Our approach to the design was more focused on the uniformity of the light. Light levels do not have to be intense when they are correctly balanced.
Lux Levels on floor between Racking - Average 121, Uniformity 0.67
Lux Levels on floor Levels on Open Area - Average 109, Uniformity 0.72
