Hello, I use DESS with Cerbo GX, Pylontech batteries, a MultiPlus II and solar on the roof. I have a dynamic electricity tariff (Tibber) which is calculated hourly. The formula stored in DESS ((p+0.02+0.125)*1.19) is correct BUT on 01.01.2025 I pay variable grid charges that are time and month dep…

That’s not quite right. There are some network operators who are already offering reduced network charges in the second quarter. The second point is that they are not only allowed to issue reduced network charges, they are actually obliged to do so. As far as I know, the number of reduced periods an…

Yeah, they are obligated to offer reduced fees, but are allowed to not do that for 2 quarters per year. (Not sure if that is just for 25 or every year) That’s what I meant.

As of today, this is a permanent regulation. However, the network operator can adjust its fees annually. In doing so, it must comply with the minimum requirements both temporarily and monetarily. I also think that such measures are more than sensible. There are many examples of this among our Europe…

There is another adjustment: in March 2025, the day-ahead auction will be switched to quarter-hour products. Victron can already represent longer half hours, will there be an adjustment to the 15-minute units?

I am working on the same problem. I received my smartmeter in december from Westnetz. They did not install a single “Steuerbox” until now. I requestet to change in §14a Modul 3 and want to get a “Steuerbox” with 4 potential free contact that will go into a shelly I4 DC and then into my openhab smart…

You’ve got something mixed up. The control box (module 1) with the potential-free contacts does not give you a control recommendation to optimise your energy consumption. You alone are responsible for the EMS control to benefit from the variable grid charges (module 3). The control box only gives y…

I am aware of that. The box with fnn 2 bit sends commands for reduced consumption or reduced pv feed in. Since i use Tibber the optimized consumption is already programmed. I will have to change the hourly costs with the grid fees then.

@M_Lange gibt es schon Neuigkeiten bzgl. der weiteren Variable für das DESS?

Wird ja erst im Herbst interessant für die meisten, aber eine erste Entwicklung wäre schon schön zu sehen.. Grundproblem ist wahrscheinlich die fehlende API für die dynamischen Netzentgelte

Ich denke dafür Bedarf es keine Api. Die Arbeit einmal im quartal drei Peise für drei Tageszeiten einzugeben mache ich mir gerne, bei Preisreduzierungen von 6-8 cent je kwh

DESS and German §14a EnWG Modul 3 (dynamic grid fees)

Q&A and troubleshooting DESS

Sarowe1990 August 9, 2025, 4:06am 36

Not realy news

Dynamic EPEX spot price: check! - dynamic gridfees:?

Venus OS v3.70~35 available for public testing

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DESS and German §14a EnWG Modul 3 (dynamic grid fees)

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