PlugIn Solar Guru
Plan my setupPlan

Cabins and Farms / Pick all three that fit

Build your own cabin or farm system

Enter your daily use, how many cloudy days to ride through, and your biggest load. The calculator sizes a 48 V system.

Example values for Cabins and Farms. Change any of them.

Add watts times hours for everything you run in a day.
Cloudy days to ride through with no sun.
Use your worst season, not summer.
Everything that can run at the same time.

Our rules of thumb: the battery covers your daily use for the days you set; the panels refill one day of use in your sun hours; the inverter and charge controller get a 25% margin. Planning numbers only, not a wiring design.

What matters

  • Well pumps and shop tools set the peak load; check their nameplates.
  • Two or three days of battery is a common starting point for cabins; farms with livestock water need more.

Watch out for

  • These are planning numbers from our stated rules of thumb. A licensed electrician designs and permits the real system.

Keep going

Sources