Size an emergency/disaster relief solar kit for essential loads including lights, phone charging, and radio.
Input Parameters
Results
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Daily Energy Need
Wh
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Panel Size
W
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Battery
Wh
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Est. Kit Weight
lbs
Note: Emergency kits should prioritize lighting, communications, and medical devices. Use 0.70 derating for non-optimal emergency panel placement.
Reference
Lighting Wh = People x 3W LED x Hours
Phone Wh = Charges x 12 Wh per charge
Radio Wh = 5W x 8 hrs
Total = Lighting + Phone + Radio + Extra
PV = Total / (Sun Hrs x 0.70 emergency derating)
Battery = Total x 2 days / 0.80 efficiency