Off-grid PV system sizing · Load / Sunlight / Battery / Panel
Note: Battery discharge efficiency is estimated at 80% and charge efficiency at 75%. Selecting a region auto-fills average sunshine hours / latitude / optimal tilt angle (sunshine hours can be overridden). Battery capacity, panel power and average sunshine hours can be manually adjusted with linked recalculation. This tool is for estimation only; please rely on engineering review for the final configuration.