Off-Grid Solar Power Calculator

Use this calculator to check how many solar panels, how big is the inverter, and how many batteries you will need.

Change Log:

• March 1, 2020
  • Migrated to new page, expect future enhancements, complete rewrite
  • Decimals are rounded up to the next whole number
  • TODO: Display errors and warnings
• June 1, 2015
  • "New Computation" on result page
  • "Sun exposure" default to 8 hours
• May 29, 2015
  • FIXED: Required Inverter
• May 27, 2015
  • Display warning(s)
  • Multiple Allowance Choices
  • FIXED: Safety Margin for motor equipments (x2.5)
  • FIXED: 20% allowance
• May 26, 2015
  • FIXED: Sun Exposure
  • FIXED: HTML codes
  • Solution has been shown
• May 24, 2015
  • Web based fork of Solar Panel and Battery Requirement Calculator for PC (2015) based on v1.0.5 BETA