Off-Grid Solar System Sizing Calculator

Use our Off-Grid solar calculator tool below to estimate system size. Check out our video on off-grid sizing for details and more information on the design process.

Steps to use the off-grid calculator:

  1. Enter Your Zip Code
  2. Fill Out Load Calculator
  3. Calculate Off-Grid System Size

Fill Out Load Calculator

Fill out the table below to estimate energy usage. We’ve included some common household appliances found in off-grid homes. Try to account for everything, keeping in mind that off-grid homes should use efficient appliances, and the major heating loads (water & air heating) are usually not electric.

ApplianceQuantity
Wattage (Volts x Amps)
Hours on per dayWatt hours per day
Total watts - (peak load)0 WTotal watt hours per day:0 Wh/dayKilowatt hours per month:0.00 kWh/mo

Questions? Chat with us!

Wil has been a part of the solar industry for over 20 years; as an electrician, solar installer, support technician, and more. He's also been living off-grid since 1996. Wil and the rest of the Unbound Solar team are here to answer any questions you have about designing a system that will fit your needs.

Download Our Solar Battery Guide

A poorly designed system can ruin your batteries. Our Solar Battery Guide will help you size your battery bank properly and keep things running smoothly.