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.
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
The long tail appears on graphs showing the degradation rate per year of the panels, indicating that up to 20% of all samples perform 1.5 times worse than the average.
It exists and does degrade panels but the time horizon is pretty wide. Real world data shows something like 0.5% to 0.7% degregation per year on average.
At the start the degregation is higher and but it slows down with age.
So a 20 year old panel might be at around 80% in the worst case.
Often they are in much better shape.
This seems like a pretty good deal to me.
Marginally. Between 77F and 100F you only lose about 5%, so you still get 95% of the stated max efficiency. It’s basically negligible and not really relevant.
Their wikipedia lists many engine models, all of which seem to be either small industrial engines or engines for range extenders only. This does not sound like a portfolio that can compete with the legacy OEMs but it does explain how they ship so many units.
Last local walking distance shop closed earlier this year (city in Germany). Used to go there for parts needed on short notice: mouse, cables etc. Not sure if there are many left now in this city that stock components like motherboards, gfx cards or RAM.
> Used to go there for parts needed on short notice
Which is why they shut down - the addressable market of people having an emergency need for an item from a limited selection of electronics isn't that big, and that's becoming the only market.
It's not your fault that you don't want to pay over the odds for everything when you're not in a rush, and it's not their fault they need to pay commercial rent, utilities, payroll, insurance and all the other overheads.
But the outcome is simply that staffed local physical shops have a lower efficiency ceiling in terms of getting items to customers.
Aren't mediamarkt still selling computer parts in Germany? Maybe not ram and mother boards but in my city in Spain Mediamarkt still sell all the peripherals, some internal drives and cabling at the very least.
reply