Solar Panel Battery Sizing Calculator

Our Solar Panel Battery Sizing Calculator helps you determine the ideal battery size for your solar energy system by analyzing your daily energy usage, solar generation potential, and desired backup duration.

It takes into account key factors like nighttime consumption, system efficiency, and available surplus energy to provide an optimized recommendation for battery capacity.

Document
kWh

Total energy used daily (in kWh). Includes all appliances and devices.

days

How many days you want the battery to supply power without recharge.

kW

The size of your solar panel system (in kW). It determines energy production.

Average peak sun hours per day: 5

Average sunlight hours per day at peak intensity (1-8 hours, depends on location).

Adjusted Recommended Battery Size

Kwh

Backup Duration

hours ≈ days

Daily Solar Generation

kWh/day
This Solar Battery Sizing Calculator provides estimates based on general assumptions, including system efficiency, depth of discharge, and average peak sun hours. Results may vary depending on actual conditions such as location, weather, and system performance. For more accurate sizing and recommendations tailored to your needs, we recommend consulting us.

Whether you’re planning for energy independence or preparing for backup during outages, this calculator helps you make an informed decision on the battery storage needed to meet your specific needs.