How to Calculate Solar Cost

How to Design Your Own Solar System

  • Step 1: Calculate your Solar Array
  • Step 2: Determine the Number of Panels you’ll need.
  • Step 3: Choose the Inverter Size!
  • Step 4: Figure out the array String-Size!

Disclaimer: Our solar calculators estimate the solar cost and size of a solar project. These should only be used as rough estimates, and may be incomplete. A solar installer would be able to provide you with a more accurate estimate.