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Money in hand How to Stretch Your Energy Dollar
  How Much Energy Do Your Electric Appliances Use? How Much Do They Cost To Run?
 

These calculations are based on rates effective 1/1/01.

Costs based on current rates are posted on our most recent Appliance Operating Costs page.

 
  Appliances Home, Conservation


General InformationRates effective 1/1/01 form the basis for these calculations which use the end block charge of $0.067 or 6.7 cents per kWH. City Light charges a lower rate for the first 16 kWh to provide an affordable block of electricity for essential needs such as cooking, refrigeration, lighting, heating. 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.

NEWWe've added an interactive calculator for those who want to do their own math.   Kitchen

Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Broiler oven 3000 15 min 0.750 $0.050 $3.02
Coffee maker 900 10 min 0.150 $0.010 $0.60
Dishwasher - hot water wash/rinse 1400 1 hr 1.400 $0.094 $5.63
Food mixer or blender 200 2 min 0.007 $0.001 $0.03
Oven, microwave 1600 20 min 0.533 $0.036 $2.14
Oven, regular or self-clean 3750 1 hr 3.750 $0.251 $15.08
Range top 500 2 hr 1.000 $0.067 $4.02
Refrigerator (12 cu ft, manual defrost) 110 5.83 hr 0.642 $0.043 $2.58
Refrigerator (18 cu ft, frost free) 400 6.33 hr 2.533 $0.170 $10.18
Slow cooker or crock pot 150 6 hr 0.900 $0.060 $3.62
Toaster 1200 2 min 0.040 $0.003 $0.16
  Laundry
Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Clothes dryer 5600 1 hr 5.600 $0.375 $22.51
Clothes washer, cold water 600 20 min 0.200 $0.013 $0.80
Iron 600 1 hr 0.600 $0.040 $2.41
  Lighting
Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Fluorescent bulb (18-watt) 18 2 hr 0.036 $0.002 $0.14
Light bulb (60-watt) 60 2 hr 0.120 $0.008 $0.48
Light bulb (100-watt) 100 2 hr 0.200 $0.013 $0.80
  Heating and Cooling
Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Air conditioner, window 4000 2 hr 8.000 $0.536 $32.16
Fan (box) 125 2 hr 0.250 $0.017 $1.01
Furnace, electric 30000 4 hr 120.000 $8.040 $482.40
Heater, baseboard 1500 4 hr 6.000 $0.402 $24.12
Heater, permanent baseboard 1500 4 hr 6.000 $0.402 $24.12
Heater, portable 1500 4 hr 6.000 $0.402 $24.12
Hot Water Heater (energy efficient) 4500 1.30 hr 5.850 $0.392 $23.52
Hot Water Heater (pre 1998) 4500 1.85 hr 8.325 $0.558 $33.47
  Entertainment
Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Radio 8 4 hr 0.032 $0.002 $0.12
Stereo 250 2 hr 0.500 $0.034 $2.01
Television 250 4 hr 1.000 $0.067 $4.02
  Miscellaneous
Appliance Wattage Time kWh Cost Bimonthly Bill Impact
Clock 3 24 hr 0.072 $0.005 $0.29
Computer 300 2 hr 0.600 $0.072 $2.41
Hair dryer 1500 5 min 0.125 $0.008 $0.50
Hot tub heater, 3/4 horsepower* 3000 5 hr 15.000 $1.005 $60.30
Hot tub pump, 3/4 horsepower* 560 2 hr 1.120 $0.075 $4.50
Pond pump 560 2 hr 1.120 $0.075 $4.50
Sewing machine 200 1 hr 0.200 $0.013 $0.80
Vacuum Cleaner 600 30 min 0.300 $0.020 $1.21
Waterbed heater 300 24 hr 7.200 $0.482 $28.94
* One horsepower = 746 watts        
  For Appliances Not Listed
 
Daily Cost  =   Wattage  X   Time  X   Rate per kWh  ÷   1000

Bimonthly Bill Impact  =   Daily Cost  X   60



City Light customers: Multiply kWh times 6.7 cents to find the cost per kWh. 6.7 cents is the winter residential rate for all kWh over the first 16 per day.

Visit Conservation at Home, 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. Accounts Home / Stretch Your Energy Dollar | Home Resource Profile

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