Off-grid calculators

List your household devices, see daily and yearly kWh. Start here before sizing solar panels or batteries.

Estimate yearly energy output from panel count, panel wattage, and your region's sun yield.

Estimate how many solar panels you need from annual kWh, panel wattage, and sun hours.

Size a battery bank from daily load, voltage, autonomy days, and depth of discharge.

Recommended continuous and surge inverter VA from continuous load, peak load, system voltage, and phases.

Required MPPT voltage and amperage from panel count, Voc, Imp, string configuration, and battery voltage.

Find the minimum DC cable cross-section from current, length, and allowable voltage drop.

Calculate a recommended DC fuse rating from inverter power and system voltage.

American Wire Gauge to metric cross-section reference table.

Estimate what percentage of your solar production you actually use, with and without a home battery.

Years to break even on a solar + battery investment. Compares scenarios with and without Dutch saldering after 2027.

Estimate the total cost for an off-grid system across three install paths: DIY, off-shelf kit, and professional. NL/BE retail ranges.

Runtime, burn rate, and cost per kWh for a backup generator on diesel, gasoline, propane, or natural gas.