3 ms·
I see degradation numbers between -0.1%/year and -1.1%/year. This translates to about * 0.999^25 = 97.5% to 0.989^25 = 75.8% output after 25 years. * 0.999^5
by abdullahkhalids 3y ago
I see degradation numbers between -0.1%/year and -1.1%/year.
This translates to about
* 0.999^25 = 97.5% to 0.989^25 = 75.8% output after 25 years.
* 0.999^50 = 95% to 0.989^50 = 57.5% output after 50 years.
- Retric 3y agoData I’ve see doesn’t show output dropping continuously at a constant rate. Also some panels did show modest improvement for a few years.
- londons_explore 3y ago> modest improvement for a few years. Many regions of the world are getting dryer. You might just be seeing a global warming side effect as there is less cloud cover.
- londons_explore 3y agoIt would be good to break the figures down between: * The actual silicon is degrading * The cover glass is getting dirty/frosted/delaminating/optical adhesive is no longer clear * Electrical failure of a whole cell - for example it is cracked, yet the panel still appears to work due to the bypass diodes removing a whole cell from the circuit. Sure - from the users point of view it doesn't matter, but from an engineering point of view, the cause of failure gives some clues how to prevent it.