Exactly - this is how I thought that the "output" value was much over 230V
And there is probably nothing to be done about it, because it is within the norm.
I looked at my place - the output is also 237V. They conquer pretty well.
however, I have a smaller number of PV installations. Some 60 houses are connected to the transformer. I don't want to count, but the installation is maybe 15-20.
As for the fact that they will sell this electricity, it shouldn't be true. BO they assume that you are doing the installation as needed. So you will use as much as you produce (because you will buy some cheaper at night but ...)
And at this point, dozens of houses next to you are paying more.
Out of curiosity, you can see at the same time how much the meter and the inverter show. If there was a large turnout (that the inverter overstates), it may be a complaint that a poorly calibrated voltage sensor in the inverter causes continuous switching off. Although looking at the graph it will not work.
I have one small idea, maybe it will work: write all letters that the voltage is still high and you are burning your appliances at home
That someone's mixer is burnt, and someone's washing machine is on fire. And that during the repair they tell you that the voltage was too high. That you have some old devices for 220V etc. And just "Request to lower the voltage", because it never drops below 237V and is often under 253V.
Maybe the "request" will work.
When we switched from 220V to 230V, the standard said that it can only be up + 5% or + 6% - I don't remember. It is just to make the sherper devices come to life. And then it was raised to + 10% because it was assumed that the older devices are no longer available :)
And the ecological method: buy a loft. The pigeons will blow the panels of the neighbors and the tension will drop
