Solar Panel Degradation Values

According to a national renewable energy laboratory nrel study premium modern solar panel manufacturers such as panasonic and lg offer panels with degradation rates as low as 0 30 per year.

Solar panel degradation values.

This study took a look at the degradation rates for almost 2 000 solar systems across the world in a variety of climates and found that monocrystalline. Based in japan but produced in tijuana mexico were the top performing manufacturers with less than 1 5 degradation. That s backed up by the solar panel manufacturer s warranty which guarantees 90 production in the first ten years and 80 by year 25 or 30. In the years since this 2012 study was conducted more efficient technologies have been developed and many newer panels have just a 0 5 percent yearly decline in energy output or better.

Phono solar produced in nanjing china and kyocera corp. Even their 360 watt panel only comes in at 19 9 efficiency compared to sunpower s lower wattage 335 model. The mean average degradation rate was 0 8 to 0 9. Solar panel degradation rates are constantly improving as solar panel technology gets better over the years and degradation rates below 1 are common throughout the industry.

So as you can see the sunpower solar panels x and a series solar panels even the lower wattage ones have a higher efficiency than the most efficient solaria panel. On average solar panels degrade at a rate of 1 each year. However a study conducted by the national renewable energy laboratory nrel shows a more accurate picture of solar panel degradation.