# Science Man

Name of
Electrical
Device

Date

Power
Rating in
watts

Power rating Time started Time
in kiloWatt
using
ﬁnished
using

Room Light

Day 1

100W

100÷1000 =
0.1kW

7:15 AM

7:35AM

100W

100÷1000 =
0.1kW

8:30PM

On peek/Off
peak/Mid
peek

Cost per kw/
hr

20 20÷60= 0.3

On Peak

0.483 cents

9:30PM

60 60÷60= 1

Off Peak

0.8 cents

100W

100÷1000 =
0.1kW

7:00AM

7:30AM

30 30÷60= 0.5

On Peak

0.505 cents

100W

100÷1000 =
0.1kW

9:00PM

10:00 PM

60 60÷60= 1

Off Peak

0.8 cents

100W

100÷1000 =
0.1kW

7:00 AM

7:30AM

30 30÷60= 0.5

On Peak

0.805 cents

100W

100÷1000 =
0.1kW

8:00PM

9:30PM

90 90÷60= 1.5

Off Peak

1.2 cents

100W

100÷1000 =
0.1kW

7:00AM

7:30AM

30 30÷60= 0.5

On Peak

0.805 cents

100W

100÷1000 =
0.1kW

10:00PM

11:30PM

90 90÷60= 1.5

Off Peak

1.2 cents

100W

100÷1000 =
0.1kW

7:10 AM

7:30AM

20 20÷60= 0.3

On Peak

0.483 cents

100W

100÷1000 =
0.1kW

9:30 PM

10:00PM

30 30÷60= 0.5

Off Peak

0.4 cents

Day 6

100W

100÷1000 =
0.1kW

8:00PM

10:00 PM

120 120÷60= 2

Off Peak

1.6 cents

Day 7

100W

100÷1000 =
0.1kW

8:30PM

10:45PM

135 135÷60= 2.2

Off Peak

1.76 cents

65W

65÷1000=
0.065 kW
65÷1000=
0.065 kW

3:28 PM

4:00PM

32 32÷60= 0.53

Mid Peak

0.42 cents

8:00PM

8:30PM

30 30÷60= 0.5

Off Peak

0.26 cents

Day 2

Day 3

Day 4

Day 5

Minutes
total

Hours used

Total cost of
one week
Computer

Day 1

65W
Day 2

65W

65÷1000=
0.065 kW

4:00PM

5:45PM

105 105÷60= 1.7

On Peak

1.77 cents

Day 3

65W

65÷1000=
0.065 kW

3:30PM

4:45PM

75 75÷60= 1.2

Mid Peak

0.95 cents

65W

65÷1000=
0.065 kW

9:00 PM

9:20PM

20 20÷60= 0.3

Off Peak

0.156 cents

65W

65÷1000=
0.065 kW

3:00PM

3:50PM

50 50÷60= 0.8

Mid...