Off-grid solar sizing tools
Sizing tools built and maintained by Solar Homelabs. Free, no signup, no data leaves your browser. Every constant they apply is documented on the tool's own page so you can substitute the real figures from your datasheets.
Solar Calculator
Enter a continuous rack load in watts, a target autonomy in hours, your worst-month peak sun hours and a depth-of-discharge limit. Returns required PV array wattage, 48 V LiFePO4 bank capacity in kWh and amp-hours, and daily energy throughput.