Halogen 50W Recessed Downlight |
10W LED Recessed Downlight |
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| Lamp Source | Halogen |
LED (Light Emitting Diode) |
| Average Lamp Life | Maximum 2,000 Running Hours |
40,000 Running Hours |
| Lamp Wattage | 50W |
10W |
| Luminous Flux | ~800-900 Lumens |
750 Lumens |
| Cost of 1 Light Fixture | £8.00 |
£65.00 |
| Life Expectancy of Light Fixture & Lamp Source base on 10 hours use per Day | 0.55 Years |
10.96 Years |
| Electrical Power Consumption per Year based on 30 Light Fixtures | 5,460 Kilowatt |
1,095 Kilowatt |
| Electrical Power Tariff @ £ 0.12 per KWH (Kilowatt Hour). Per Year. | £655 |
£131 |
| Maintenance Cost for Lamps & Re-lamping for 1 x 50w Halogen. Assuming Halogen lasts 1000hrs, most do not last that long. | 1 Lamp Cost £2.25ea Replace a single lamp 40 Times in 10.96 years. Total cost £90 |
£0.00 |
Investment Cost Comparison Based on 30 Light Fixtures
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| Cost of Light Fixture | £6.00 |
£65.00 |
| Initial Cost for 30 Light Fixtures | £180 |
£1,770 (£59ea) |
| Electrical Power Consumption based on 10.96 Years @ 10 Hours per Day not including increasing electricity costs. | £7,180 |
£1,310 |
| Maintenance Cost of Lamps & Re-lamping within 10.96 Years, not including any labour costs if an electrician is required | Assuming each of the 30 Halogens has to be replaced 40 times within 10.96 years. £2,700 |
£0.00 |
| Total Cost of Light Fixtures including power used and replacement lamps. | £10,060 |
£3,080 |
| Saving over 10.96 years | £0.00 |
£6,980 |
| Saving per year | £0.00 |
£636 |
| Time taken to recoup initital cost of 30 LED Downlights with electricity saved. | 2.8 years |
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