The True Cost of Standby


Do you know how much power your appliances use when not in use? The table below is a sample range of similar products. The plugged in working column is for average consumption. The maximum column gives details of the highest consuming product in the sample range. Many consume 100% to 150% more power than average. With that increase consumption the running costs can double or more. Note as shown in column 1 equipment just plugged in, not switched off at the socket will consume power, even when NOT on standby.

The two tables give details of home computer system power consumption and home music system power consumption.

Home Computer system

Item of equipment

Plugged in but NOT switched OFF at   socket outlet [Watts]

Sleep/standby [Watts]

Plugged in switched ON   charging/working [Watts]

Computer Desktop

2.84

£0.34

21.13

£2.50

73.97

£8.75

Computer Modem DSL

1.37

£0.16

5.37

£0.64

5.37

£0.64

Computer Monitor CRT

0.80

£0.09

12.14

£1.44

65.10

£7.70

Computer Printer [laser]

1.58

£0.19

1.70

£0.20

131.70

£15.57

Computer Scanner

2.48

£0.29

9.60

£1.14

9.60

£1.14

Computer speakers

1.79

£0.21

4.12

£0.49

4.12

£0.49

Total

£1.28

£6.39

£34.28

Home Music system

tem of equipment

Plugged in but NOT switched OFF at   socket outlet [Watts]

Sleep/standby [Watts]

Plugged in switched ON   charging/working [Watts]

Music Amplifier

0.27

£0.03

33.99

£4.02

39.16

£4.63

Music cassette deck

0.54

£0.06

4.53

£0.54

5.72

£0.68

Music CD player

5.04

£0.60

8.62

£1.02

9.91

£1.17

Music Radio

1.12

£0.13

9.48

£1.12

9.92

£1.17

Music Stereo

1.66

£0.20

6.80

£0.80

4.11

£0.49

Television CRT

2.88

£0.34

3.06

£0.36

2.99

£0.35

TV Cable decoder

17.50

£2.07

24.65

£2.92

29.64

£3.51

TV DVD recorder

0.00

£0.00

28.35

£3.35

31.37

£3.71

Total

£3.43

£14.13

£15.71

The interesting difference is that the computer system consumes 80% less power between stand by and switched on.  However the music system consumes only 10% less power between stand by and switched on.

The maximum column gives values for the highest tested item from the product range. These consumption values can be up to 200% more than average; costing up to three times more to run than the energy efficient products.

Check out the links below for more details.

http://www.sust-it.net

http://www.energystar.gov

The full list below gives further details of appliance energy consumption in the home.

Item of equipment

Plugged in but NOT switched OFF at   socket outlet [Watts]

Sleep/standby [Watts]

Plugged in switched ON charging or   working [Watts]

Computer Desktop

2.84

£0.34

21.13

£2.50

73.97

£8.75

Computer Laptop

8.90

£1.05

15.77

£1.86

44.28

£5.24

Computer Modem DSL

1.37

£0.16

5.37

£0.64

5.37

£0.64

Computer Monitor CRT

0.80

£0.09

12.14

£1.44

65.10

£7.70

Computer Monitor LCD

1.13

£0.13

1.38

£0.16

27.61

£3.27

Computer Printer [inkjet]

1.26

£0.15

1.81

£0.21

4.93

£0.58

Computer Printer [laser]

1.58

£0.19

1.70

£0.20

131.70

£15.57

Computer Scanner

2.48

£0.29

9.60

£1.14

9.60

£1.14

Computer speakers

1.79

£0.21

4.12

£0.49

4.12

£0.49

Fax machine

0.00

£0.00

6.10

£0.72

6.42

£0.76

Game console

1.01

£0.12

23.34

£2.76

26.98

£3.19

Microwave oven

0.00

£0.00

25.79

£3.05

1433.00

£169.47

Music Amplifier

0.27

£0.03

33.99

£4.02

39.16

£4.63

Music cassette deck

0.54

£0.06

4.53

£0.54

5.72

£0.68

Music CD player

5.04

£0.60

8.62

£1.02

9.91

£1.17

Music Radio

1.12

£0.13

9.48

£1.12

9.92

£1.17

Music Stereo

1.66

£0.20

6.80

£0.80

4.11

£0.49

Power tool charger

0.00

£0.00

0.00

£0.00

29.53

£3.49

Telephone caller ID

0.00

£0.00

1.27

£0.15

1.27

£0.15

Telephone cordless

0.98

£0.12

1.90

£0.22

2.81

£0.33

Telephone Fax Machine

0.00

£0.00

6.10

£0.72

6.42

£0.76

Mobile phone charger

0.00

£0.00

0.20

£0.02

3.68

£0.44

Television CRT

2.88

£0.34

3.06

£0.36

2.99

£0.35

TV Cable decoder

17.50

£2.07

24.65

£2.92

29.64

£3.51

TV DVD recorder

0.00

£0.00

28.35

£3.35

31.37

£3.71

Total

£6.29

£30.39

£237.66

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About aimhome
All aspects of energy efficiency and help with saving money spent on utility bills. Home visits undertaken to assess what is used and explain what can be done to save money. Central heating control upgrades, central heating system power flushing. Energy saving lighting surveys and installation of low energy lamps and lighting. Every day that action is not taken is an added cost in hard cash terms. Call today to see what can be done. Green Deal Ecologic Ltd, improving your world without costing the earth.

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