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Solar Panels

Most consumers will judge a solar panel based on 4 major factors:

    • Long term degradation:  This is measured by the guaranteed output of the panel over 25 years.  All tier one panels will produce at least 80% of the power in 25 years as they did on day 1.  Gold Rush Energy only uses tier 1 panels.
    • Cost:  Premium panels are the most expensive with Sunpower being the highest cost.  Mid range panels will offer a strong return on your investment or “bang for the buck”.  Economy panels are not recommended and shown below for comparison purposes only. 
    • Country of Origin:  Many companies claim to manufacture in the U.S., but typically this is assembly of parts only and not manufacturing.  Additionally, many companies are based in one country but manufacture in another.  
    • Warranties/Guarantees:  All panels have a 25 year production guarantee as mentioned above.  However, the manufacturer’s warranty against defects is typically 10 to 15 years.  All premium panels extend this to 25 years. If a panel is defective however, it often will be apparent in a much shorter time frame making the production guarantee a more powerful gauge of quality.

Below are comparisons for some of the more common brands on the market:

Premium Panels

Brand Watts Efficiency

Panasonic

330

19.7%

Panasonic

340

20.3%

Solaria XT

360

19.9%

Solaria

350

19.4%

LG 350 Q1C-A5

350

20.3%

LG 360 Q1C-A5

360

20.8%

Sunpower SPR-X21-335-BLK-D-AC

335

21%

Sunpower X21-350-BLK-D-AC

350

21.5%

Mid Range Panels

Brand Watts Efficiency

Hanwha Q Cell Peak Duo-G5

315

18.7%

REC 315TP2M

315

18.9%

Mission Solar PERC 60

310

18.65%

Economy Panels

Brand Watts Efficiency

Grape Solar GS-P60-265

265

16.21%

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