DESS does not respect the price settings and loses money. I noticed that DESS (in trade mode) sells from the battery in the evening and buys at a higher price in the morning. Since the price differences are small, I wanted to be sure and tried to change the formula for the purchase price +1EUR. Thi…

What Is the DESS forecast for the morning hours like? Ist it “expecting” to buy from grid, or is it expecting to have enough battery left for these hours? It is a known issue currently, that DESS sometimes underestimates the nightly consumption, and therefore sells “to much” in the evening, which c…

Thank you for your answer. The weather forecast for the next day is not important, because the sun does not shine between 0-6a.m. I remember that DESS had in its forecasts on 11.9.2025 that it would buy between 0-6a.m. I left it to him to see if he really did it, because we consulted with the supp…

[image] Petr.Krcmar: The weather forecast for the next day is not important, because the sun does not shine between 0-6a.m. I didn’t mean the weather forecast, but the forecasted energy flows on your system: What does this graph show for tomorrow moning hours? 330Wh Grid2Consumption or 330Wh…

[image] dognose: I didn’t mean the weather forecast, but the forecasted energy flows on your system: What does this graph show for tomorrow moning hours? 330Wh Grid2Consumption or 330Wh Battery2Consumption? The difference here would be: If it “expects” Grid2Consumption, then it is indeed a fal…

Okey, I see: You are running in Trade-Mode. Trade-Mode does not care about self-consumption - it will only buy when it’s cheap and sell when it’s high. Your prices also don’t indicate any trading-possibility - what you see in terms of selling is just “deferred selling of solar” collected during the…

According to the last chat it seems that you are not finding a solution to the problem and therefore you are recommending me to stop using DESS. I’m afraid that in your last chat you are: oversimplifying the DESS task missing the problem ad 1) Trade mode is not supposed to sell all the energy reg…

I’m not recommending to stop using DESS. I recommend you to use the Mode that would schedule as you expect: [image]

The topic of this ticket is “DESS does not respect the price setting and loses money.” This is not about which DESS mode I should use. After all your verification questions, we have not come up with a reasonable reason why DESS behaves in such a way that it loses money. Even if it were better for…

Hi, I’m sorry I couldn’t help you on that topic. To get official support, please visit the support page linked in the community guidelines of this community forum: [image] Community Guidelines Welcome, please read the Victron Community Guidelines here first! This Community is predominantly vol…

Dear Dognose, The Support page you are referring me to only leads back to Community - to you. [Snímek obrazovky 2025-10-09 120037] Guy moderator edit: Just to clarify, dognose is not a Victron Staff member (at time of writing), I have updated his honorific to more accurately represent him as a …

DESS does not respect the price setting and loses money

Q&A and troubleshooting DESS

dognose 8 October 2025 20:45 10

Hi,

I’m sorry I couldn’t help you on that topic.

To get official support, please visit the support page linked in the community guidelines of this community forum:

https://community.victronenergy.com/t/community-guidelines

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DESS does not respect the price setting and loses money

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