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Off Grid Solar Calculator

Solar Hour Map of the USA

December solar map Solar hour reference bar

Power Demand

Power Inverter

System design is for 12 volts

Custom list total: 0 Wh/d

Enable custom load list

Battery Bank

Battery Bank
Days of Autonomy (days without sun)

Minimum storage required: 0 Ah

Battery Bank Recommendation

Solar Array & Charge Controller

Solar Array

Minimum array recommended: 0W

Includes 20% buffer for real-world panel inefficiency

Charge Controller

Charge Controller

Select a charge controller rated for at least 0A

Includes 25% safety margin

System Summary

Environmental Conditions

System Demands (12V)

Battery Bank

Array & Controller

These results are planning estimates only. Always verify component specifications with a qualified installer. Charge controller selection also requires matching panel open-circuit voltage (Voc) to the controller's max input voltage rating.