I have a programmable clock that starts my tapwater heating every day at 11.00 hour. The heating takes about 45 minutes and is about 7 kWh of energy. If I look to the consumption forecast than I see daily a forecasted consumption of about 7 kWh that is between 10.00 hour and 10.59 hour. That is one …

We have rolled out the change to all installations!

Hello! I have the same issue in my installation! My water heater is scheduled to work from 5:00 to 7:45 and from 12:30 to 19:00. In the 1st picture we can see consumption forecast that shifted 1 hour back compared to actual consumption: 4-5 instead of 5-6 11-12 instead of 12-13 17-18 instead of…

Seems I may have this issue as well. My off peak period begins at 20:00. Last Friday we charged our EV starting 20:00. Tomorrow (Friday) the projected consumption jumps one hour early (19:00). @dognose or @Barbara could you possibly have the forecasting team look into this? Thanks! [IMG_1388] …

Hey! We are looking into this issue at the moment. I’ll let you know of our findings later this week.

Thank you! Not to go off topic, but it would be amazing if we could somehow exclude certain measured loads from the consumption forecast. In my example above, the EV charge totally (and correctly) throws off my consumption forecast. It would be cool if we could add a separate VM3 meter to measure t…

Thanks, the issue is consistently present every forecast.

Interesting! I’ll buy another VM3 meter and try it out.

Hi @koningkronenberg , We have made an adjustment in the consumption forecast model, and only activated it for your installation for testing. Could you let us know if you see an improvement? Then we’ll roll out the change to all installations.

I am also ready to test adjusted forecasting, so you may apply the changes to my installation too.

Ok thanks. I will test the adjustment and will update you with the test results.

Consumption forecast DESS is one hour to early

Q&A and troubleshooting DESS

Barbara (Barbara Jansink (Victron Energy)) 23 September 2025 14:10 8

Hey!

If you use a Victron EV Charger or an energy meter with role EVCS, we already forecast consumption of the EVCS separately, following another model that is better at predicting EV Charger consumption.

Will extra meters improve DESS?

EV charging and DESS: viable strategies?

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Consumption forecast DESS is one hour to early

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