Comment by patall
6 hours ago
Why is that always posted without stating the magnitude of the effect? The numbers that you find online are around 15% relative loss at 60°C vs. 25°C panel temperatur (I remember a HN comment reporting 12% comparing peak April to peak July). That is significant, but not world changing, especially for AC.
What about panel degradation?
There are 30 year old still functioning panels in Australia.
Buried in that longevity, is an observation that a fifth of panels degrade faster than expected
See (Uni NSW study) Cracking the ‘long tail’ problem: new research targets hidden solar panel issue (2026) - https://www.unsw.edu.au/newsroom/news/2026/01/research-targe...
and discussion: Maximising time in the sun: how to maintain and repair solar panels to make them last (2026) - https://www.theguardian.com/australia-news/2026/feb/13/maxim...
This is more about the lifetime of many PV panels in Australia (temps to 45 C so far) not specifically about PV panels with many hours at > 50 C.