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General Information:
Rates effective 4/1/02 form the basis for these calculations. City Light rates are structured to provide an initial block of inexpensive electricity to cover basic life needs such as cooking, hot water and refrigeration; a second block to cover additional needs of most users; and a higher-priced third block for large users. At rates in effect June 14, 2002, customers are billed $0.0432 per kWh for the first 300 kWh used per month (480 in winter). Customers are billed $0.0858 per kWh for second block use of 301-3000 kWh per month (481-5000 in winter). Customers are billed $0.1000 per kWh for third block use of all over 3000 kWh per month (5000 in winter).
The calculations in this table are based on the current second block rate of $0.0858 per kWh. High users should substitute the third block rate in these calculations.Wattage figures may vary. Wattage is generally specified on the appliance. Call the Conservation Help Line at (206) 684-3800 or send email to rescons.scl@seattle.gov for more ways to save energy in the home.
Our publication "High Bills - What You Can Do" includes an easy-to-read appliance cost chart and information on payment assistance programs. To obtain a copy, call (206) 684-3000 or print it yourself using our Adobe Acrobat (pdf) file. This file is in Adobe Acrobat .pdf format, and
requires Acrobat Reader for viewing, downloadable from adobe.com:
 
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Kitchen
| Appliance |
Wattage |
Time |
kWh |
Cost |
Bimonthly Bill Impact |
| Broiler oven |
3000 |
15 min |
0.750 |
$0.064 | $3.86 |
| Coffee maker |
900 |
10 min |
0.150 |
$0.013 |
$0.77 |
| Dishwasher - hot water wash/rinse |
1400 |
1 hr |
1.400 |
$0.120 |
$7.21 |
| Food mixer or blender |
200 |
2 min |
0.007 |
$0.001 |
$0.03 |
| Oven, microwave |
1600 |
20 min |
0.533 |
$0.046 |
$2.75 |
| Oven, regular or self-clean |
3750 |
1 hr |
3.750 |
$0.322 |
$19.31 |
| Range top |
500 |
2 hr |
1.000 |
$0.086 |
$5.15 |
| Refrigerator (12 cu ft, manual defrost) |
110 |
5.83 hr |
0.642 |
$0.055 | $3.30 |
| Refrigerator (18 cu ft, frost free) |
400 |
6.33 hr |
2.533 |
$0.217 | $13.04 |
| Slow cooker or crock pot |
150 |
6 hr |
0.900 |
$0.077 |
$4.63 |
| Toaster |
1200 |
2 min |
0.040 |
$0.003 |
$0.21 |
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Laundry
| Appliance |
Wattage |
Time |
kWh |
Cost |
Bimonthly Bill Impact |
| Clothes dryer |
5600 |
1 hr |
5.600 |
$0.480 | $28.83 |
| Clothes washer, cold water |
600 |
20 min |
0.200 |
$0.017 |
$1.03 |
| Iron |
600 |
1 hr |
0.600 |
$0.051 |
$3.09 |
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Lighting
| Appliance |
Wattage |
Time |
kWh |
Cost |
Bimonthly Bill Impact |
| Fluorescent bulb (18-watt) |
18 |
2 hr |
0.036 |
$0.003 |
$0.19 |
| Light bulb (60-watt) |
60 |
2 hr |
0.120 |
$0.010 |
$0.62 |
| Light bulb (100-watt) |
100 |
2 hr |
0.200 |
$0.017 | $1.03 |
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Heating and Cooling
| Appliance |
Wattage |
Time | kWh | Cost |
Bimonthly Bill Impact |
| Air conditioner, window |
4000 |
2 hr |
8.000 |
$0.686 |
$41.18 |
| Fan (box) |
125 |
2 hr |
0.250 |
$0.021 |
$1.29 |
| Furnace, electric |
30000 |
4 hr |
120.000 |
$10.296 | $617.76 |
| Heater, baseboard |
1500 |
4 hr |
6.000 |
$0.515 |
$30.89 |
| Heater, permanent baseboard |
1500 |
4 hr |
6.000 |
$0.515 |
$30.89 |
| Heater, portable | 1500 | 4 hr |
6.000 |
$0.515 |
$30.89
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| Hot Water Heater (energy efficient) | 4500 | 1.30 hr |
5.850 |
$0.502 | $30.12 |
| Hot Water Heater (pre 1998) | 4500 | 1.85 hr |
8.325 |
$0.714 | $42.86 |
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Entertainment
| Appliance |
Wattage |
Time |
kWh |
Cost |
Bimonthly Bill Impact |
| Radio |
8 |
4 hr |
0.032 |
$0.004 |
$0.25 |
| Stereo |
250 |
2 hr |
0.500 |
$0.043 | $2.57 |
| Television |
250 |
4 hr |
1.000 |
$0.086 |
$5.15 |
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Miscellaneous
| Appliance |
Wattage |
Time |
kWh |
Cost |
Bimonthly Bill Impact |
| Clock |
3 |
24 hr |
0.072 |
$0.006 |
$0.37 |
| Computer |
150 |
4 hr |
0.600 |
$0.051 |
$3.09 |
| Hair dryer |
1500 |
5 min |
0.125 |
$0.011 |
$0.64 |
| Hot tub (pre 1990, uninsulated) |
2000 |
8.33 hr |
16.667 |
$1.430 |
$85.80 |
| Hot tub (360 gal, super insulated) |
1500 |
4.2 hr |
6.300 |
$0.541 |
$32.43 |
| Pond pump |
560 |
2 hr |
1.120 |
$0.096 |
$5.77 |
| Sewing machine |
200 |
1 hr |
0.200 |
$0.017 |
$1.03 |
| Vacuum Cleaner |
600 |
30 min |
0.300 |
$0.026 |
$1.54 |
| Waterbed heater |
300 |
12 hr |
3.600 |
$0.309 |
$18.53 |
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For Appliances Not Listed
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| Daily Cost = Wattage X Time X Rate per kWh ÷ 1000
Bimonthly Bill Impact = Daily Cost X 60 |
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| | City Light customers: Multiply kWh times 8.58 cents to find the cost per kWh. Effective June 14, 2002, 8.58 cents is the residential rate for all usage between 16 and 167 kWh per day in winter (all between 10 and 100 kWh per day in summer). Additional usage is billed at the "high user" rate of 10.00 cents per kWh. For detailed information on rates, visit the main Rates Page.
Our publication "High Bills - What You Can Do" includes an easy-to-read appliance cost chart and information on payment assistance programs. To obtain a copy, call (206) 684-3000 or print it yourself using our Adobe Acrobat (pdf) file.
This file is in Adobe Acrobat .pdf format, and
requires Acrobat Reader for viewing, downloadable from adobe.com:
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