SolarCalc Engineering Console

Generate inverter sizing, battery bank configuration, panel stringing, BOM, and diagram payloads from a single set of system requirements.

Monthly Bill Amount (PHP)

Your typical monthly electricity bill. Leave blank if you know your daily kWh.

Cost per kWh (PHP)

Check your bill for the rate, or use 10 as a typical value.

Daily Consumption (kWh)

Your total energy use in one day from your bill or estimate. If you fill in your bill above, this will auto-calculate.

Peak Demand (W)

Highest watts running at the same time.

System Type

Off-grid = no utility dependence, Hybrid = with battery + grid, Grid-tied = no backup.

Peak Sun Hours

Average full-sun equivalent hours for your location.

Autonomy Days

How many days the battery should support loads with little/no solar.

Appliance Voltage (PH)

Choose the service/loads you need to support.

No panel datasheet yet? You can keep the preset values as-is. Only edit Voc, Vmp, and Isc if you already have the exact panel specs.

Panel Preset

Quick-select common module classes, or choose Custom.

Panel Wattage (W)

Nameplate power of one panel.

Panel Voc (V)

Advanced: open-circuit voltage from panel datasheet. Safe to keep preset if you do not have exact specs yet.

Panel Vmp (V)

Advanced: voltage at maximum power from panel datasheet. Keep preset when panel is not finalized.

Panel Isc (A)

Advanced: short-circuit current from panel datasheet. Keep preset unless exact panel specs are available.

Bifacial Panel

Enable if the module can harvest light from both sides.

Bifacial Gain (%)

Extra yield estimate from rear-side capture.

Motor/Pump Loads

Turn this on if you have pumps/compressors with high startup surge.

Battery Chemistry

LiFePO4 usually allows deeper daily usage and longer cycle life.

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