SunReckon → Guides
Off-grid & solar guides
The how and why behind the numbers — plain-English walkthroughs, each linking to the calculator that runs the math for you.
System
How to Size an Off-Grid Solar System
The full chain — load, battery, array, controller, inverter — with a worked example.
Read guide InverterWhat Size Inverter Do I Need?
Continuous vs surge watts, and how to size for motor startup.
Read guide BatteryHow Many Batteries for Off-Grid?
Turn daily load and days of autonomy into a battery bank.
Read guide ChargeHow to Size a Charge Controller
MPPT amps, system voltage, and why you add headroom.
Read guide RuntimeHow Long Will My Battery Last?
Estimate backup runtime from capacity, depth of discharge, and load.
Read guide