Inverter, what should be considered?

That is nice in itself. The question here is how long the field really stays in P? For us, if at all, it's only briefly because the water boils very quickly and everything else burns with P. And then the question of how much it actually draws. Ours, for example, 3.2kW.

I just checked, seems to be 4.5 kW, not 7.5. At least. But base load + 2x 1-1.5 (my estimate for level 7-8) already pushes the limit. And that’s with pasta with Bolognese which isn’t just 3 minutes but about 15 minutes of pasta (3 minutes in P beforehand) and the sauce at least 30 minutes. I’m not saying it’s a disaster you go bankrupt over. But it does reduce the self-sufficiency promise communicated by providers if you have to buy something regularly. A bigger storage that you basically never empty from the storage capacity point of view is nonsense. Yes, the answer to the question from would be interesting, whether another inverter can fix that. I urgently need a smart meter so I can analyze our day and night base loads.

Or choose an inverter that delivers more power. Does that exist or is Kostal actually quite well positioned here?

Are you basically satisfied with your technology? Would you buy something else today? Personally, I don't know a single brand in this area; the brands I mentioned are standard for the house manufacturer.

As I already wrote here, I have no idea. Since yesterday, besides Kostal, I have also occasionally read about Fronius, which is why I just looked at the data sheets.

Here, the hybrid inverters from 6 kW (e.g., SYMO GEN24 6.0 PLUS) seem to deliver 25A. More precisely, it says:

max. usable input current (Idc max MPPT1 / MPPT2): 25A / 12.5A
max. usable input current (Idc max): 22A

I don't know what the MPPT values mean, but I just assume that it is more than with the Kostal inverters, or must one assume the 12.5A? o_O


EDIT:
For Kostal, on the other hand, it consistently states for all sizes:

max. input current (Idc max) per DC input

But base load + 2x 1-1.5 (my estimate for level 7-8) already breaks the bar. And with noodles with Bolognese, it's not just 3 min but noodles about 15 min (before that 3 min P) and the sauce at least 30 min.

If you constantly put over 2kW into your sauce, it will either burn or splash under the ceiling. ;-)

I'm not saying it's a disaster that will bankrupt you. But it does of course diminish the self-sufficiency promise communicated by the providers if you have to buy in something every day.

Well, I and I think most others lose more Wh due to the somewhat slow/inaccurate regulation than the 2.6kW limitation. But that one percent self-sufficiency is completely negligible compared to the energy you have to buy for the heat pump in winter.

I urgently need a smart meter so I can analyze our day and night base loads.

Can your meter maybe be read out with an IR head?

Or choose an inverter that provides more power. Is there such a thing or is Kostal actually quite well equipped here?

There is, the mentioned Fronius can e.g. provide more, still Kostal is well equipped enough as I described. A PDF with outputs depending on the battery can be found on the manufacturers' sites.

Are you basically satisfied with your technology? Would you buy something different today? Personally, I don't know a single brand in this field, the brands I mentioned are standard with the house manufacturer.

I am basically satisfied. Could be a bit quieter. When you close the door, you don't hear it anymore, but then it gets pretty warm in the technical room. Emergency power would be nice currently, too, and I find it a pity that Kostal can't do that at all. Although many other inverters then also only have one socket or require effort during switching.

I currently also find emergency power quite nice and think it's a pity that Kostal can't do that at all.

I also have the same inverter and at some point, I think at the end of last year, read that they wanted to release a capable device "soon." Unfortunately, nothing has come out so far.

Can your meter maybe be read with an IR head?

No idea, can you tell from the meter?

I currently also find emergency power quite nice and think it's a pity that Kostal can't do it at all.

How often would emergency power be needed? We recently had a 3-hour situation where our inverter did not work because there was no supply from the power grid; however, those 3 hours would not be worth a conversion with costs of around 5k to me.