Load Evaluation Calculator

Appliance Quantity Watts
(V x A)
Mult. * 1.5 for AC conversion
Hours On per Day Watt Hours per Day


Total Watt Hours per Day:
Watts
Watt Hours Required Assuming Inherent Efficiency Loss:
Watts

Energy consumption calculation

The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times number of usage hours per day t divided by 1000 watts per kilowatt:

E(kWh/day) = P(W) × t(h/day) / 1000(W/kW)


Appliances Watts
Central Air Conditioner 5,000
Electric blanket 200
Hedge trimmer 450
Electric Clothes Dryer 3,400
Shaver 15
Weed eater 500
Oven 3,000
Waterpik 100
1/4” drill 250
Hair Dryer 1,538
Well Pump (1/3-1 HP) 480-1200
1/2” drill 750
Dishwasher 1200-1500
Laptop 60-250
1” drill 1000
Coffee Machine 1,500
Plasma TV 339
9” disc sander 1200
Microwave 1,500
LCD TV 213
3” belt sander 1000
Popcorn Popper 1,400
25” color TV 150
12” chain saw 1100
Stereo 60
Furnace Blower 300-1000
Appliances Watts
Toaster oven 1,200
19” color TV 70
14” band saw 1100
Hot Plate 1200
12” black and white TV 20
7-1/4” circular saw 900
Iron 1,100
Stereo 10-30
8-1/4” circular saw 1400
Toaster 1,100
Satellite dish 30
Microwave 500-1500
Radiotelephone - Receive 5
Room Air Conditioner 1,100
Radiotelephone - Transmit 40-150
16 cu. ft. (AC) 1200 watt-hours /day*
20 cu. ft. (AC) 1411 watt-hours/day*
Vacuum Cleaner 500
Water heater 479
100 watt incandescent bulb 100
15 cu. ft.Refrigerater 1240 watt-hours /day*
Sink Waste Disposal 450
25 watt compact fluor. bulb 28
Espresso Machine 360
Cable Box 20
Clothes Dryer - Gas Heated 300-400
Appliances Watts
50 watt DC incandescent 50
Cell Phone - recharge 2-4 watts
Dehumidifier 350
40 watt DC halogen 40
MP3 Player - recharge .25-.40 watts
Blender 300
20 watt DC compact fluor. 22
Humidifier 300-1000
CFL Bulb (60-watt equivalent) 18
Video Game Player 195
CFL Bulb (40-watt equivalent) 11
CFL Bulb (75-watt equivalent) 20
CFL Bulb (100-watt equivalent) 30
Standard TV 188
Monitor 150
Computer 120
Portable Fan 100
Engine Block Heater 150-1000
Ceiling Fan 100
Portable Heater 1500
Can Opener 100
Waterbed Heater 400
Curling Iron 90
Stock Tank Heater 100
Clock Radio 7
Well Pump (1/3-1HP) 480-1200

* TV’s,VCR’s and other devices left plugged in, but not turned on, still draw power.

**To estimate the number of hours that a refrigerator actually operates at its maximum wattage, divide the total time the refrigerator is plugged in by three. Refrigerators, although turned "on" all the time, actually cycle on and off as needed to maintain interior temperatures.

* The daily energy values listed here are for the most efficient units in their class and the information was obtained from Consumer Guide to Home and the General Electric website.