| Lamp type | Incandescent | Halogen | CFL | LED |
|---|---|---|---|---|
 |
 |
 |
 |
|
| Life | 750 to 1,000 hrs |
2,000 hrs |
6,000 to 15,000 hrs |
30,000 to 50,000 hrs |
| Rated power | 50W |
35W |
11W |
5W |
| Power used over 1 year | 438.0 kWh |
306.6 kWh |
96.4 kWh |
43.8 kWh |
| Cost of electricity over 1 year | £52.56 |
£36.80 |
£11.57 |
£5.26 |
| Heat output | High |
High |
Low |
Lowest -minor |
| Health affects | UV rays, IR effects, SAD Syndrome |
UV rays, IR effects, SAD Syndrome |
UV rays, IR effects |
No UV, No IR |
| Colour rendition | Restricted colour options |
Restricted colour options |
Restricted colour options |
Wide range of colours |
| Dimmable | Yes |
Yes |
No |
Yes |
| Robustness | Very sensitive, easily breakable |
Sensitive, Breakable |
Sensitive, Breakable |
Robust, Solid State |
| Power-up time | Almost immediate |
Almost immediate |
Delayed |
Immediate |
| Cost of ownership | Very High |
High |
Low |
Lowest |
| Contaminants | Reasonably Safe |
Reasonably Safe |
Mercury |
None = Safe |
| Specialist disposal | Non domestic only (to Landfill) |
Non domestic only (to Landfill) |
Yes (Compliance with WEEE Directive – Specialist Disposal) |
Non domestic only (recyclable) |
| Recyclability | Landfill |
Landfill |
Specialist Disposal |
Recyclable |
| Light efficiency | 8-17 lumens / watt |
10-30 lumens / watt |
60-70 lumens / watt |
40-60 lumens / watt |
| Energy efficiency | 10% |
10% |
40% |
90% |
| Light quality over time | Decreases |
No change |
Decreases |
No change |
E-mail: info@greenluxlighting.com - Tel: 0845 371 0877