One of Tongwei's standout features is the impressive life expectancy of their solar panels. While the industry norm hovers around 25 years, Tongwei panels promise a lifespan of 30 years..
One of Tongwei's standout features is the impressive life expectancy of their solar panels. While the industry norm hovers around 25 years, Tongwei panels promise a lifespan of 30 years..
These types of panels can last over 30 years thanks in large part to their make-up of a single crystal structure (which is higher efficiency rated, with most rated between 15-20%)..
The single-glass Tongwei solar panels are guaranteed to produce at least 98% of rated performance in the first year and an annual power degradation of no more than 0.55% in the following 24 years. [pdf]
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