|
Appliance
|
Operating Hours
|
kWh/month
|
Monthly cost @ $0.10/kWh
|
|
Residential
|
|
|
|
|
Air Conditioning - 10 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
351
|
$35*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
97
|
$10*
|
|
Air Conditioning - 12 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
291
|
$29*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
81
|
$8*
|
|
Air Conditioning - 13 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
270
|
$27*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
75
|
$7*
|
|
Air Conditioning - 14 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
249
|
$25*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
69
|
$7*
|
|
Air Conditioning - 18 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
197
|
$20*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
54
|
$5*
|
|
Evaporative Cooling
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
86
|
$9*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
52
|
$5*
|
|
Heating - Heat Pump - 10 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
120
|
$12*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
236
|
$24*
|
|
Heating - Heat Pump - 12 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
113
|
$11*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
222
|
$22*
|
|
Heating - Heat Pump - 13 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
107
|
$11*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
210
|
$21*
|
|
Heating - Heat Pump - 14 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
96
|
$10*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
189
|
$19*
|
|
Heating - Heat Pump - 18 SEER
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
86
|
$9*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
170
|
$17*
|
|
Heating - Electric Resistance
|
|
|
|
|
Phoenix - cost per 500 sq ft*
|
24 hrs/day
|
324
|
$32*
|
|
Prescott - cost per 500 sq ft*
|
24 hrs/day
|
529
|
$53*
|
|
Flagstaff - cost per 500 sq ft*
|
24 hrs/day
|
729
|
$73*
|
|
Heating - Miscellaneous
|
|
|
|
|
Electric fireplace - flame and heat, no thermostat
|
1 hr/day
|
52
|
$5
|
|
Electric fireplace - flame only
|
1 hr/day
|
7
|
Less than $1
|
|
Space Heater (1,000 watt)
|
6 hrs/day
|
180
|
$18
|
|
Infrared heaters - large
|
1hr/day
|
8
|
Less than $1
|
|
Infrared heaters - small
|
1hr/day
|
2
|
Less than $1
|
|
Water Heating (3 People)
|
|
|
|
|
Phoenix
|
typical usage
|
206
|
$21
|
|
Prescott
|
typical usage
|
270
|
$27
|
|
Flagstaff
|
typical usage
|
300
|
$30
|
|
Kitchen/Laundry
|
|
|
|
|
Broiler
|
1hr/wk
|
6
|
Less than $1
|
|
Clothes Dryer
|
6 loads/wk
|
74
|
$7
|
|
Clothes Washer (no hot water)
|
1 load/day
|
12
|
$1
|
|
Clothes Washer (with hot water)
|
1 load/day
|
60
|
$6
|
|
Coffee maker - large
|
1 brew/day
|
6
|
Less than $1
|
|
Coffee maker - small
|
1 brew/day
|
3
|
Less than $1
|
|
Crock Pot (large)
|
2 use/wk
|
12
|
$1
|
|
Dishwasher (no water heating)
|
6 loads/wk
|
14
|
$1
|
|
Dishwasher (with water heating)
|
6 loads/wk
|
70
|
$7
|
|
Disposal
|
2 minutes/day
|
1
|
Less than $1 |
|
Exhaust Hood Fan
|
1 hr/day
|
6
|
Less than $1 |
|
Electric skillets
|
1hr/week
|
6
|
Less than $1 |
|
Freezer (new)
|
24 hrs/day
|
47
|
$5
|
|
Freezer (old)
|
24 hrs/day
|
84
|
$8
|
|
Microwave
|
90 mins/wk
|
10
|
Less than $1
|
|
Mixer - large
|
1hr/wk
|
3
|
Less than $1 |
|
Mixer - small
|
1hr/wk
|
1
|
Less than $1
|
|
Oven, self cleaning - standard
|
2 hrs/wk
|
25
|
$3
|
|
Oven, self cleaning - convection
|
2 hrs/wk
|
15
|
$1
|
|
Range Oven (350 deg.)
|
3 hrs/wk
|
22
|
$2
|
|
Range, Lg. Surface Unit
|
1 hr/day
|
48
|
$5
|
|
Range, Sm. Surface Unit
|
1 hr/day
|
23
|
$2
|
|
Refrigerator (typical 2002 model)
|
24 hrs/day
|
63
|
$6
|
|
Refrigerator (typical older model)
|
24 hrs/day
|
95
|
$10
|
|
Toaster Oven
|
0.5 hrs/day
|
17
|
$2
|
|
Trash compactor
|
2 mins/day
|
1
|
Less than $1
|
|
Home Office
|
|
|
|
|
Computer
|
4 hrs/day
|
20
|
$2
|
|
Computer games
|
1hr/day
|
5
|
Less than $1
|
|
Copier
|
typical usage
|
35
|
$4
|
|
Fax machine
|
1 hr/day
|
5
|
Less than $1
|
|
Multi Functional Device
|
3 hrs/day
|
7
|
Less than $1
|
|
Paper Shredder
|
5 mins/day
|
0
|
Less than $1
|
|
Printer, ink jet, home application
|
1hr/wk
|
0
|
Less than $1 |
|
Printer, laser (energy star)
|
8 hr/day
|
10
|
Less than $1
|
|
Lights
|
|
|
|
|
Christmas tree lights - 100 large
|
4 hrs/day
|
60
|
$6
|
|
Christmas tree lights - 100 minature
|
4 hrs/day
|
7
|
Less than $1
|
|
Lights (1 - 60 watt bulb)
|
6 hrs/day
|
11
|
$1
|
|
Lights (1 - 100 watt bulb)
|
6 hrs/day
|
18
|
$2
|
|
Lights (1 - 15 watt compact fluorescent bulb)
|
6 hrs/day
|
3
|
Less than $1
|
|
Night light - large
|
12 hrs/day
|
3
|
Less than $1
|
|
Night light - small
|
12 hrs/day
|
1
|
Less than $1
|
|
Outdoor lighting - 15 watt
|
12 hrs/day
|
5
|
Less than $1
|
|
Outdoor lighting - 75 watt
|
12 hrs/day
|
27
|
$3
|
|
Outdoor lighting - 100 watt incandescent
|
12 hrs/day
|
36
|
$4
|
|
Outdoor lighting - 1500 watt
|
12 hrs/day
|
540
|
$54
|
|
Torchier 500 watt
|
4 hrs/day
|
60
|
$6
|
|
Entertainment
|
|
|
|
|
Aquariums
|
24 hrs/day
|
22
|
$2
|
|
Cable box
|
28 hrs/wk
|
2
|
Less than $1
|
|
Cable modem
|
typical usage
|
12
|
$1
|
|
DVD player
|
1 hr/day
|
0
|
Less than $1 |
|
Musical key board
|
1 hr/day
|
0
|
Less than $1
|
|
Radio
|
1 hr/day
|
0
|
Less than $1
|
|
Television (color)
|
4 hrs/day
|
19
|
$2
|
| Television (plasma) |
4 hrs/day |
40
|
$4
|
|
Television (projection screen)
|
4 hrs/day
|
33
|
$3
|
|
TV/VCR combo
|
5.5 hrs/day
|
51
|
$5
|
|
VCR
|
4 hrs/day
|
1
|
Less than $1
|
|
Video Games
|
1hr/day
|
5
|
Less than $1
|
|
Miscellaneous
|
|
|
|
|
Bath or kitchen exhaust fan
|
2 hr/day
|
2
|
Less than $1
|
|
Ceiling fans
|
4 hrs/day
|
8
|
Less than $1
|
|
Central vacuum
|
1 hr/wk
|
8
|
Less than $1
|
|
CO2 monitor
|
24 hrs/day
|
2
|
Less than $1
|
|
Curling Iron
|
0.5 hrs/day
|
1
|
Less than $1
|
|
Electric blanket
|
typical usage
|
20
|
$2
|
|
Fountain pump, small (2.5 watt)
|
12 hrs/day
|
1
|
Less than $1
|
|
Garage door opener
|
4 openings/day
|
3
|
Less than $1
|
|
Hair Dryer
|
10 mins/day
|
8
|
Less than $1
|
|
Humidifier
|
12 hrs/day
|
14
|
Less than $1
|
|
Iron
|
1 hr/wk
|
5
|
Less than $1
|
|
Oxygen concentrator
|
24 hrs/day
|
357
|
$36
|
|
Transformer (small size)
|
24 hrs/day
|
2
|
Less than $1
|
|
Vacuum, upright
|
1 hr/wk
|
6
|
Less than $1
|
|
Water bed
|
typical usage
|
80
|
$8
|
|
Whirlpool bath
|
3 hrs/wk
|
12
|
$1
|
|
Work lamp (100 watt)
|
10 hrs/wk
|
4
|
Less than $1
|
|
Outdoor Appliances
|
|
|
|
|
Electric leaf blower
|
1hr/wk
|
5
|
Less than $1
|
|
Electric grille
|
1 hr/wk
|
7
|
Less than $1
|
|
Electric hedge trimmer
|
1hr/wk
|
2
|
Less than $1
|
|
Electric lawn mower
|
1hr/wk
|
6
|
Less than $1
|
|
Electric string trimmer (weed eater)
|
1hr/wk
|
2
|
Less than $1
|
|
Fountain pumps, large (40 watt)
|
12 hrs/day
|
14
|
$1
|
|
Heat wrap
|
typical usage
|
4
|
Less than $1
|
|
Pool/Spa Motor, 1 hp
|
8 hrs/day
|
298
|
$30
|
| Pool/Spa Motor, 1 1/2 hp |
8 hrs/day |
397
|
$40
|
|
Spa heater - 11 kW
|
4 hrs/wk
|
189
|
$19
|
|
Swimming pool heating - heat pump - Phoenix
|
24 hrs/day
|
732
|
$73
|
|
Swimming pool heating - resistance heat - Phoenix
|
24 hrs/day
|
3,662
|
$366
|
|
Water trough heater
|
1 hr/day
|
144
|
$14
|
|
Well pumps
|
typical usage
|
30
|
$3
|
|
Commercial
|
|
|
|
|
Copier > 45 cpm
|
typical usage
|
150
|
$15
|
|
Copier 21-44 cpm
|
typical usage
|
60
|
$6
|
|
Exit signs (energy star)
|
24 hrs/day
|
4
|
Less than $1
|
|
Exit signs (non energy star CFL)
|
24 hrs/day
|
9
|
Less than $1
|
|
Exit signs (non energy star incandescent)
|
24 hrs/day
|
15
|
$1
|
|
For small motors, the approximate energy cost for one hour of operation is:
|
|
1/4 HP
|
1
|
0.44
|
$0.04
|
|
1/3 HP
|
1
|
0.56
|
$0.06
|
|
1/2 HP
|
1
|
0.62
|
$0.06
|
|
3/4 HP
|
1
|
0.80
|
$0.08
|
|
1.0 HP
|
1
|
0.98
|
$0.10
|
|
1 1/2 HP
|
1
|
1.46
|
$0.15
|
|
2.0 HP
|
1
|
1.96
|
$0.20
|
|
3.0 HP
|
1
|
3
|
$0.29
|
