The comprehensive site for designing PV/Solar Electric Systems

Designing Standalone Systems

Load DefinitionSystem DefinitionDesign Output

The first step to designing a gridinteractive system is to estimate the loads that need to be supported by the system. Location of the system also effects performance and system design.

 Location Information

City/State:
Min Temp:
Max Temp:
Solar Hours:
Key Components of a Standalone System (click to view enlarged image)
Key components of a Standalone System

 Electrical Loads Qty Volts Power Run Watts Hours/Day Days/WK Surge Watts Avg. WH/Day
Air Conditioner [1 Ton]12015001500
Blender120350350
CD Player1203030
Ceiling Fans1205050
Clothes Washer12012001200
Clothes Dryer120500500
Coffee Pot12010001000
Computer Printer120100100
Desktop Computer120125125
Dish Washer12015001500
Electric Range Large12021002100
Electric Range Small12014001400
Exhaust Fan120150150
Fluroscent60W Equivalent1201616
Food Processor120500500
Furnace Fan120500500
Garage Door Opener120350350
Hair Dryer12010001000
Incandescent bulb100W120100100
Incandescent bulb40W1204040
Incandescent bulb60W1206060
Iron [Electric]12015001500
MicroWave [~1 Cubic Feet]12014001400
MicroWave [~0.5 Cubic Feet]120800800
Mixer120150150
Radio1201010
Refrigerator [16cubic feet]120475475
Refrigerator [22cubic feet]120540540
Satellite System1205050
Stereo System1203030
Telephone Answering Machine1201010
TV 19 Inch1208080
TV 21 Inch120125125
TV 25 Inch120140140
Vaccum Cleaner120650650
Phantom Loads120200200
Total:   1500  45001500

SUMMARY LOAD INFORMATION:
Number of Days of Autonomy: AVG WH/Day: 1500
Run Watts: 1500 Max Surge: 4500