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System Summary

Off Grid System Calculator

BETA V1.1
This tool will help you to determine the size of your battery bank and the number of PV panels you will need. First add your devices, then adjust your settings, and then view the results. Switch between tabs at any time to make changes.
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Release Notes:
V1.1, 3-4-2016: Added temperature correction to 80F. Added three season calculations. Corrected the inverted charge/discharge efficiency.