Expected Useful Life Of Solar Panels

Degradation rates are used in solar site assessments in order to estimate the energy production over the life of a system and to calculate the payback period and return on investment.

Expected useful life of solar panels. Performance warranties guarantee that the power output will decline at a rate set by the manufacturer usually about 0 7 each year. Most solar panel companies will provide a standard 25 year warranty for the expected life expectancy of the solar panels. Solar panels typically come with 25 year performance warranties and 10 to 12 year limited warranties. An inspection of your solar panels may also include an inspection of the other equipment involved in a solar installation namely your solar inverters and roof racking system.

The life expectancy of solar panels. Those panels could retain 96 of their production capabilities after 20 years. Solar site assessors use these rates. Solar power is having its hockey stick moment.

Warranties don t necessarily equal life expectancy but they are a good place to start estimating. Since the early 2000s the amount of solar panels being installed worldwide has been growing exponentially and it s expected to continue to do so for decades. By the end of 2015 an estimated 222 gigawatts worth of solar energy had been installed worldwide. When you re considering investing in a solar installation wondering how long home solar panels last is a question that inevitably pops up.

However their ability to absorb sunlight will be reduced.