Photo voltaic panels last more than anticipated
At first, though, photovoltaic modules have been democratized since the 1950s, and since then many blocks have formed. Manufacturers today usually guarantee at least 80% of the 25-year production output level early. This value is often deducted. Rapid test. However, most manufacturers do not monitor performance during the warranty period.
25 years of persecution
American company The First Sun This development has been followed over the years under real field conditions. What follows is a detailed follow-up of approximately forty panels installed in the Colorado National Renewable Energy Laboratory (NREL) in 1995. After 25 years the performance exceeded expectations and prompted the manufacturer to extend the guaranteed performance at the age of 30.
Initial efficiency 88%
In the first five-year study, the first solar production decreased by 0.6% compared to the previous year. The results released in 2020 finally announce a reduction of 0.5% per year. The panels installed in 1995 are now performing at 88% of their original capacity.
NREL monitors highly efficient panels made of silicon Sun Power. For the first eight years, the average rate of deterioration was 0.2% per year.