Solar Panel Degradation Chart

Reported on block iv and v monocrystalline si systems deployed in florida and found degradation rates well below 1 year 32.

Solar panel degradation chart.

P series solar panels are built with sunpower s unique shingled solar cells. On average solar panels degrade at a rate of 1 each year. Note these figures may have a minus sign in front of them as in 0 7 or 0 25. For most tier 1 solar panels the degradation rate is 30 meaning that each year the panels performance is reduced by 30.

These solar panels are best for large commercial projects. X series solar panels are perfect for space constrained projects while e series solar panels are a great all around solar panel choice. In 1977 the department of energy established the solar energy research institute in golden colorado. 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.

Over 25 years that adds up to a total of 6 96 meaning your panels will operate at 93 04 of their original capacity in 2045. A meta analysis of 11 000 solar power installations found that the median degradation rate was 0 5 to 0 6 meaning for every panel that declined more slowly another declined more quickly. However a study conducted by the national renewable energy laboratory nrel shows a more accurate picture of solar panel degradation. In addition degradation rates for 10 selected systems were found to be larger than 1 year.