|
Savings
|
|
Light bulb
|
100W
|
|
Hours used in month
|
120
|
|
Kilowatts x Hours
|
12
|
|
Cost of electricity in pence per kWh
|
10
|
|
Cost (in pence) to run the Item for 1 month
|
120
|
|
Cost to run all such Items in house for 1-month
|
? 1.2
|
|
LED Light equivalent to 100W bulb
|
18W
|
|
Hours used in month
|
120
|
|
Kilowatts x Hours
|
2.1
|
|
Cost of electricity in pence per kWh
|
10
|
|
Cost (in pence) to run the Item for 1 month
|
?0.21
|
|
Savings over one year
|
|
100W light bulb plus 1 replacement
|
?15
|
|
18W LED light no replacement as LED has 10-year life span
|
?2.51
|
