Off-Grid Solar System Calculator

Calculate the size of your off-grid solar system based on your daily energy consumption, location, and system requirements. This helps you design a reliable independent solar power system.

Total daily energy usage in kilowatt-hours
Your location's latitude (positive for North, negative for South)
Average peak sun hours per day in your location
Type of battery for energy storage
Number of days of backup power needed
Operating voltage of your system

How to Use This Calculator

  1. Enter Energy Consumption: Input your daily energy usage in kWh.
  2. Specify Location: Enter your latitude and peak sun hours.
  3. Choose Battery Type: Select your preferred battery technology.
  4. Set Backup Days: Choose how many days of backup power you need.
  5. Select System Voltage: Choose your system's operating voltage.
  6. Calculate: Click the button to see your system requirements.

System Component Specifications

Component Typical Size Notes
Solar Panel 400W Standard residential panel
Battery (Li-ion) 5kWh Typical residential unit
Inverter 3-5kW Pure sine wave recommended
Charge Controller 40-60A MPPT recommended

Important Considerations:

  • Account for seasonal variations in sun hours
  • Consider battery depth of discharge limits
  • Factor in system losses and inefficiencies
  • Plan for future energy needs
  • Consider maintenance requirements
  • Account for extreme weather conditions

For professional installations, consult with a solar expert to verify calculations and consider site-specific factors.