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Sizing your system
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Appliance
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Consumption (Watts)
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|
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Usage
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Day
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Weekend
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Week
|
|
Refrigerator
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--
|
1,156
|
2,312
|
8,092
|
|
Freezer
|
--
|
960
|
1,920
|
6,720
|
|
Oven
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--
|
1,920
|
3,840
|
13,440
|
|
TV
|
4 hours
|
500
|
1,000
|
3,500
|
|
Microwave
|
10 min
|
140
|
280
|
980
|
|
Toaster
|
10 min
|
170
|
340
|
1,190
|
|
Pump
|
--
|
1,310
|
2,620
|
9,170
|
|
Lights (x 4)
|
4 hours
|
240
|
480
|
1,680
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|
Radio
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4 hours
|
80
|
160
|
560
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Return to Off-Grid Systems
A. Small Cottage System (4 lights and TV only)
- Summer only (Jun-Sep) Weekend use only: 80W & 375 amp/hr
- Summer only (Jun-Sep) Full time use: 200W & 950 amp/hr
- Year round weekend use: 200W & 375 amp/hr
B. Light Cottage System (4 lights, TV, and fridge)
- Summer only (Jun-Sep) Weekend use only: 200W & 650 amp/hr
- Summer only (Jun-Sep) Full time use: 500W & 2400 amp/hr
- Year round weekend use: 400W & 650 amp/hr
C. Medium Cottage System (Fridge, Pump, and 4 lights)
- Summer only (Jun-Sep) Weekend use only: 200W & 950 amp/hr
- Summer only (Jun-Sep) Full time use: 800W & 3200 amp/hr
- Year round weekend use: 500W & 950 amp/hr
D. Heavy Cottage System (Microwave, Fridge, Pump, TV, and 4 lights)
- Summer only (Jun-Sep) Weekend use only: 400 W & 1150 amp/hr
- Summer only (Jun-Sep) Full time use: 1 kW & 4000 amp/hr
- Year round weekend use: 600W & 1150 amp/hr
These numbers are based on generic values for energy consumption and represent a minimum required. Actual numbers will vary by use and type of appliance used. Amp/h calculation is based on a 12 volt battery bank.
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