Design Your DIY Solar Panel System

Design your DIY solar panel system with our calculator that relies on data from the National Renewable Energy Laboratory (NREL) and their PVWatts tool. By answering the questions below, Solar GOODs' DIY solar panel system calculator can tell you how many solar panels you need to offset your energy usage.

• Address/Zipcode:
  
• Total Annual KWH:
  *Learn More
• Array Type:
  Fixed Open Rack Fixed Roof Mounted

  
• System Capacity:
• DC to AC Derating Factor:
  %

  *
• Percent of Power Savings from Panels:
  %

  
• Choose roof pitch and degrees:
  12/1 = 4° 12/2 = 9.5° 12/3 = 14° 12/4 = 18.5° 12/5 = 22.5° 12/6 = 26.5° 12/7 = 30.5° 12/8 = 33.75° 12/9 = 37° 12/10 = 40° 12/11 = 42.5° 12/12 = 45°

  or

  °

  
• Azimuth:
  °

  
• System Losses:
  %

  *
• Module type:

Get System Size & Panel Count