Buyer’s Guide 2021

Best Solar Panels for Homes

EnergyPal offers the best solar panels for homes by value, price, wattage & warranty. Our 2021 Buyer’s Guide reviews SunPower, LG, Panasonic, Hanwha Q Cells, Silfab, REC Solar and Trina panels.

We think differently when comparing solar panels. It is easy to focus on just watts efficiency or price, but what’s also important is making sure you get the most value from your solar panels based on your situation. Here’s our guide to the best solar panels and our recommendations:

Leading Solar Panel Manufacturers

First we summarize our research on leading solar panel manufacturers and if the solar panels are made in America, including SunPower, LG, Panasonic, Solaria, Hanwha Q-Cells, Silfab, REC Solar and Trina solar.

Top 5 Solar Panel Manufacturers by Availability
  1. SunPower
    • Efficiency up to 22.2%
    • 25-year warranty, 92% production guarantee
    • Made in USA, Mexico, Philippines
  2. REC
    • Efficiency up to 20.6%
    • 25-year warranty, 92% production guarantee
    • Made in Singapore
  3. LG
    • Efficiency up to 21.4%
    • 25-year warranty, 90% production guarantee
    • Made in South Korea
  4. Solaria
    • Efficiency up to 20%
    • 25-year warranty, 88% production guarantee
    • Made in USA (Fremont, CA)
  5. Hanwha Q-Cells
    • Efficiency up to 19.6%
    • 25-year warranty, 85% production guarantee
    • Made in South Korea (previously German company)

Best Solar Panels by Wattage

EnergyPal ranks the best solar panels by wattage or energy production rating for 2021. The highest rated panels are:

Top 10 Solar Panels based on Wattage 2021
  1. 420w - SunPower A-Series SPR-A420-G-AC
  2. 415w - SunPower A-Series SPR-A415-G-AC
  3. 400w - SunPower A-Series SPR-A400-G-AC
  4. 370w - LG NeON-R Series LG370Q1C-V5
  5. 360w - LG NeON-R Series LG-360Q1C-A5
  6. 360w - SunPower X-Series SPR-X22-360
  7. 355w - REC Alpha Black REC355AA
  8. 345w - SunPower X-Series SPR-X21-345
  9. 335w - SunPower X-Series SPR-X21-335-BLK
  10. 335w - LG NeON-2 Series LG-335N1C-A5

Best Solar Panels by Module Efficiency

EnergyPal ranks the best solar panels by module efficiency rating for 2021. The highest rated panels are:

Top 5 Solar Panels based on Module Efficiency 2021
  1. 22.2% - SunPower X22-Series
  2. 21.5% - SunPower A-Series
  3. 21.5% - SunPower X21-Series
  4. 20.8% - SunPower LG NeON-R Series
  5. 20.6% - REC Alpha Black REC355AA
  6. 20.1% - SunPower E-Series

Best Solar Panels by Warranty

EnergyPal ranks the best solar panel warranty by manufacturer for 2021. The highest production warranty and warranty terms are:

Top 5 Solar Panel Manufacturer Warranties 2021
  1. SunPower - 25 years, 92.0% original production
  2. REC - 25 years, 92.0% original production
  3. Panasonic - 25 years, 90.76% original production
  4. LG - 25 years, 85% original production
  5. Silfab - 30 years, 83% original production

Best Solar Panels for The Money

The best solar panels for the money in 2021 depends on the specifics of your home location and roof characteristics. We’ve summarized this down for you based on our review of all available solar panels.

Recommended Best Solar Panels For Your Money 2021
  1. Large roof areas with clear southern exposure:
    1. SunPower X22-360W or X21-355W-BLK
  2. Smaller roofs with only partial southern exposure:
    1. SunPower A420 or SunPower A410
  3. Smaller roofs where the angles prevents use of A400:
    1. SunPower X22-X370W
  4. Partial shaded roofs or locations where electric rates are lower:
    1. REC 355A
  5. Lowest price yet still great quality panel and good warranty:
    1. Silfab 330W or Q-Cell 340W

Our Solar Advisors will help you determine which panels are best for your home. Get a free customized solar panel design for your home and comparative quotes now.

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