Limit the photovoltaic system to 70% and install a radio remote control receiver

Hello Dirk, I have number 2. Disadvantage: It costs an extra 400€ again,.... My system has never been shut down so far (2 years of operation). Why? About 1 km away there is a solar park that is shut down first in case of overproduction. Yes, they pay compensation (but you are obliged to find out yourself when they shut down your system). You have to check a website every few months and see if you were affected. The throttling is permanent - from when do the extra 400€ payment pay off? You have to calculate that yourself.

Hello Wastl,

Thank you for your reply. I am currently also leaning more towards solution 2 - the receiver costs us EUR 249.00 including calibration + VAT, so just under EUR 300.00.

Did you get this website from the electricity provider, or from somewhere else?

Best regards,

Dirk

Did you get this website from the electricity provider, or from somewhere else?

Yes. The website was given to me by letter from Bayernwerk. They are responsible for the power grid in our area and at the same time my customers.

: Thank you!

We are getting a 4.6 kWp system, also with 70% hard regulation. Will it stay at 300 euros with you? You will only have a few days a year where your system will even exceed the limit ... actually, it doesn’t pay off. Better to go with 70% soft, that would be a good solution.

We have 7.28 kWp facing straight south with a 25° roof. We limited it to 70%, but with the possibility to first subtract self-consumption and only then limit it to 70%. So if the system would normally be throttled at 5.3 kW, but we are currently consuming 2000 W, it won’t be throttled at all.
Additional costs are the larger inverter (ours is 7.5 kW) and the Solarlog, which we would have bought anyway, and an S0 meter that cost 40 euros and still serves well. With the S0 meter and the Solarlog, we can now see exactly when how much electricity is consumed down to the minute and view daily profiles, which has already uncovered some major energy guzzlers. There are also many infos (self-consumption ratio, graphics, daily production).
Conclusion after one year: hard throttling at 70% causes losses (which hurt more psychologically than financially), but none at 80%. So I would choose the next inverter so that 80% of the installed capacity is covered; ours is a bit too large. A 6 kW inverter would have sufficed completely, because we only exceed 6 kW when it’s cold but sunny, i.e. in spring.
However, I wouldn’t want to do without the Solarlog and S0 meter anymore. So: soft 70% rule!