Guides

Start with what you know

You do not need to know every electrical term before you start. These guides explain the numbers you need, where to find them, and what each result means.

Choose your next step

Estimate your daily electricity useRead device labels, enter watts or kWh, estimate daily running time, and identify how each device is powered.
Use your daily totals for battery and solar planningUse battery capacity, minimum charge level, efficiency, and peak sun hours to plan your system.
Check whether your power source can handle your loadsCompare running and startup watts with inverter or generator limits, and running current with shore-power limits.

Already have your numbers? Choose a calculator or explore the methods behind the estimates.

Choose a calculator How It Works