And how can I test this function?
We don’t see the last 3 months none real negative prices on the day ahead.
It does stop between 0 and -2 cent.
Does someone know the reason?
If your PVInverter supports the dynamic power limiting, then it can be shut down.
you could disable ac-feedin in the gx ess-settings when the battery is full to verify it does that.
(temporary disable DESS, else it may override feedin settings)
Also just saw the -40 or -80 only twice this year.
I guess in Germany - which was usually one of the root causes for negative energy prices - there are two major things affecting that:
1.) Battery Storage has grown 37% since 2025. So, since 2026 there would be enough battery power to peakshave ~ 30% of the noons solar-peak, helping to keep prices “higher”.
2.) EV registrations had a massive grow as well, which may also increase demand for cheapest prices.
You have to go back to 1 May to see a real negative price.
Something happened after that, we had beautiful weather and even in the weekend the price seems to not be willing to go under zero anymore.
But what happened there, is it market manipulation, is not all green energy traded on the day ahead, does green energy actively and in advance be turned off by the grid operators? Think there isn’t a need to manage negative prices anymore, simply because we will not see them anymore,…
Good tip, I’ll give it a try. I actually meant enabling the function in the Dynamic-ESS settings, as shown in the image above, but apparently it’s not available yet. Not even in the 3.80 beta.
Hi Barbara,
Thank you for making the advanced settings visible in DESS.
I have just tested this setting, but it does not seem to work completely as expected yet.
The solar systems connected to the Multi RS Solar shut down completely, but the AC-coupled solar does not.
The AC-coupled solar system is connected via an SMA Sunny Boy inverter. I have checked that the dynamic power limitation is enabled. In addition, I tested the dynamic power limitation function via Node-RED, where the inverter responds correctly and the function works as expected.
Could it be that this functionality is not yet fully implemented or working correctly?
As Barbara already pointed out, it’s beta functionality. So it’s certainly possible that it isn’t working entirely as it should yet.
Does DESS stop exporting to grid when calculated sell price is zero or negative? In my case I don’t get paid if Nordpool price is 2 cents or less, and there is a rule that at least 80% of what I export to grid must be taken back (consumed) from the grid, so I don’t want to accumulate kWh for which there is no benefit to me.
I don’t think you understand what I’m saying, ofc not to be rude, but I made a picture with AI to show what I mean with my statement to control and not shut down your whole solar according to the prices. most of the time there are just 2 hours of negative pricing here in the Netherlands.
Hopefully this helps you to understand my point.
Thank you for reading!
George
Not rude to think along 
But the maths of that example are not really mathing 
- your day summary shows 44.8 solar+126 grid + 9.5 battery on the production side. Consumption totals to 82 - where’s the remaining 80ish kWh going?
- Also the hourly values don’t work out, in your “negative price hours” your consumption and charge figures are well bellow 17 kWh - which means disabling solar and pull these < 17 kW 100% from grid IS the way to go to maximize gain?
Every kWh of solar added there will make you miss some cents on import?
The Idea behind disabling solar is simple:
When prices are negative, max out grid, the home battery will assist with what’s possible after consumption.
Everything else (consumption above grid capability) does not contribute anything on that matter and could be put in any other, none-negative hour.
Tbh. negative grid prices usually appear during very sunny periods, i’m happy if my EVs have some capacity available after extended solar days
And usually I then fill them up for -30ct, just to note at 3 pm that tomorrow will be -75ct 
There is none -30ct or -75ct anymore, not seen the last 3 months, why???
We only do see -1ct or max -3ct.
On the day ahead you can see the predicted consumption is way higher than the real consumption.
This consumption must be traded on the day ahead, so why don’t we see this on the intraday market, where does this mismatch go?
The energy market found a legal (?) way to keep the day ahead above zero!!!