About Solar Backup Calculator
Our Solar Backup Calculator helps you size the battery bank needed for reliable solar backup power during outages or off-grid use.
Enter your daily energy consumption, desired backup days, and system details to get accurate estimates for Lead-Acid, Lithium, or LiFePO4 batteries.
Designed for homeowners and businesses, this tool simplifies planning your solar energy storage.
Solar Backup Calculator
1Consumption
2Backup Details
3Results
Step 1: Daily Energy Consumption
Enter your daily power usage to estimate battery needs.
Check your energy bill or sum appliance usage (e.g., 100W bulb × 10h = 1000 Wh).
How It Works
Enter Consumption
Input your daily energy usage in Wh or kWh.
Specify Backup Needs
Choose backup days, voltage, and battery type.
Get Results
View battery capacity, battery count, and tips.
Read Also: Solar Panel Payback Calculator