How Long Do Solar Panels Last Reddit

The general answer for monocrystalline and polycrystalline panels is 25 years.

How long do solar panels last reddit.

39 upvotes 18 comments. Remember to do the calculation for an entire year and remember that your first year will be 100 efficiency but that drops a bit over the next ten years to about 80. When you re considering investing in a solar installation wondering how long home solar panels last is a question that inevitably pops up. That being said the federal trade commissionestimates that many solar panels last for about 20 years.

Most solar panel companies will provide a standard 25 year warranty for the expected life expectancy of the solar panels. The panels will likely last much longer than that panels made in the 1970s are still in use. Especially because your panels will not stop working after 25 years they just won t work as well. To put your mind at ease studies have proven solar panels can last anywhere between 25 to 30 years or sometimes more.

Typical consumer warranties on panels are for 25 years. Polycrystalline silicon panels on the other hand are blue in color. You can count on most photovoltaic solar panels to last 25 years before they begin to noticeably degrade. Solar panels last about 20 years according to the federal trade commission.

However this doesn t mean that they stop producing electricity after 25 years it just means that energy production has declined by what manufacturers consider to be a significant amount. This 2012 study found that solar panels typically degrade in energy output by about 8 each year and technology has only improved since then. The solar industry estimates an average solar panel lifespan of roughly 25 30 years. Yes you read that right.

How long do solar panels last. Figure out how the panels will fit on your roof with plenty of space around them for access and fire code. Posted in the askscience community. Chances are if you installed a roof top solar system today it would last longer than your roof.

At vivint solar however we work with the best manufacturers and they re so confident in their panels that they offer 25 year warranties. The great news is that with proper maintenance your panel may actually run for as long as 40 50 years. According to a photovoltaic degradation rates study published by the national renewable energy laboratory nrel the mean average degradation rate for solar panels is 0 8 per year 25 years to 80 with the median falling to 0 5 and 78 of all installations examined showing less than 1. Of course that number is just an estimate.

As a general solar industry rule of thumb solar panels last about 25 30 years. Ok now you have the number of panels you want.