Energy Saving Plans

Plan A：Each fluorescent lamp can help you save $268

Example： Assume the power for a fluorescent lamp = 44 watt
  The power for a 4-inch long Blue Sky Scheme Lighting = 22 watt
 

Daily operating duration = 24 hours
Monthly operating duration = 30 days -- warranty = 18 months
Total Operating hours = 12960 hours
Charge of CLP Group = $0.89/unit
44w * 24hrs/1000 = 1.056 unit Daily charge: 1.056 * $0.89 = $ 0.94
The charge for a fluorescent lamp for an hour: $0.94 / 24 hours = $0.04
The charge for a Blue Sky Scheme Energy Saving Lighting for an hour： $0.04 * 50% = $0.02
Total saved charge: $0.02 * 12960 hours = $259

The expenditure for 18 months (12960 hours)
   
Item
No. of times
Material cost
Labour cost per time
subtotal
Lamp Replacement
2
10
10
$40
Starter
1
2
10
$12
Ballast
1
15
20
$35
Total
$87
Total saved electricity charge + maintenance expenditure – favorable retail price
= 259 + 87 – 78 = $268

Plan B ----- 0 expenditure, each high efficiency lighting can save $183：
3 – year rental with a four-year warranty

Assume that a firm operates 10 hours a day and 26 days a month, then the total number of hours in a month = 260 hours
Example： a 4-inch long lamp
The monthly charge for a fluorescent lamp：260 hours * $0.046 = $ 11.96
The monthly charge for a Blue Sky Scheme Lighting: $11.96 * 50% = $ 5.98

The maintenance cost for 48 months (12480 hrs)
Item
No. of times
Material cost
Labour cost per time
subtotal
Lamp Replacement
2
10
10
$40
Starter
1
2
10
$12
Ballast
1
15
20
$35
Total
$87
The monthly confident rental price for each high energy saving lighting = $ 5.4
The expenditure for a fluorescent lamp
-