Did you understand that page? Did you even READ it?
Not really, I have better things to do with my time, than figuring out what the warranty is somewhere else.
Everyone seems so invested in this microinverters, and I still dont get it.
1) Safety, no HVDC.
2) Redundancy. If one panel or inverter goes down you only lose that one.
3) Shading, dirt, poop etc. You only lose that one panel, it doesn't impact the string.
If you want the cheapest system you wouldn't use microinverters.
I'm familiar with the claimed benefits.
1) Solaredge and other DC optimizer, have some communication that limits the voltage on a string in case a failure. So if a wire is broken for example, you have like 5V and minimal current through it. According to the new regulations, you dont even have to install DC isolators. This is only a benefit compared to regular string inverters.
2) I just dont see how this is relevant. I have a freezer at home, if it breaks, I loose maybe 2-300 EUR worth of food 10 hours later. Yet I dont have several small freezers at home. If an inverter breaks, I stop generating power, until the installer fixes it. Several heating systems. I have 1 mains power line coming from the street, what if that one breaks?
The microinverters have shared AC line. This redundance feels like marketing, and if you take one step backwards it doesnt really make sense.
3) Just like with DC optimizers. With half cut cells, they even reduce the panel area that gets effected by shading. I've read that they actually want to go to quarter cut cells in the future, that will reduce the benefits of microinvertes even more.
And this effect is over estimated. We had this nifty algorithm, that could tell a customer, when they had shading over their panels. It was comparing the generation of an installation against neighboring installations, and we sent an email when we found shading. And the average loss was something like 25 EUR a year ( as I remember, you know how memory is).
It was a much larger issue, that inverters shut down when there was too much generation. You have a street, with a transformer feeding it at one end. The AC line and the transformer was designed to convert from the 10KV to 235V. At the end of the street you have 225V due to the voltage drops. They install the system 30 years ago, nobody had solar.
In the meantime, Belgium became one of the most dense in solar installations, but the transformers are the same. So there is still 235 at the beginning of the street, but in the middle you have 240V and the inverters at the end of the street have to shut down, because the voltage is too high. Some people were loosing out as much as 150 EUR/year, because of this, and they cannot do anything about it. DSO doesn't care, because they have no financial incentive to spend money on the lines or the transformer.
They also
4) Cost more
5) Place electrolytic capacitors in heated areas. Regular inverters can be placed in the shade, or have a heatsink built in. Some of them even had fans.
That indeed seems to be the case, very dissapointing.
I've got 370W panels, and I'm wasting 80W per panel, or 1.12kW total.
Thats one of the issues that I'm seeing. Regular strings usually also have DC over provisioning. But that's 20% per panel, very different than 20% of an entire system.