|
|
| CFL rating |
Bulb life
(hours) |
Electricity used during the CFL bulbs life |
Saving on electricity |
| CFL |
Ordinary
lightbulb |
| 9W |
6000 |
54kWh |
£5.94 |
240kWh |
£26.40 |
£20.46 |
| 8000 |
72kWh |
£7.92 |
320kWh |
£35.20 |
£27.28 |
| 15000 |
135kWh |
£14.85 |
600kWh |
£66.00 |
£51.15 |
| 11W |
6000 |
66kWh |
£7.26 |
360kWh |
£39.60 |
£32.34 |
| 8000 |
88kWh |
£9.68 |
480kWh |
£52.80 |
£43.12 |
| 15000 |
165kWh |
£18.15 |
900kWh |
£99.00 |
£80.85 |
| 20W |
6000 |
120kWh |
£13.20 |
600kWh |
£66.00 |
£52.80 |
| 8000 |
160kWh |
£17.60 |
800kWh |
£88.00 |
£70.40 |
| 15000 |
300kWh |
£33.00 |
1500kWh |
£165.00 |
£132.00 |
|
| Calculations assume a price of 11p per kWh |
| Currently a 6000 hour CFL costs under £1.00, and a 15000 hour under £1.50. |
Email:contact@foestafford.org.uk
Copyright © Friends of the Earth Stafford 2007. This page was last updated on 02/02/07.
Click here for Friends of the Earth England, Wales and Northern Ireland |
|
