VRM shows 27,432 kWh consumption in a single hour

DIY
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1

Hi,

I’d like to report a VRM aggregation bug where an energy counter reset is being interpreted as actual consumption, resulting in a completely unrealistic value.

System:

  • Cerbo GX (latest firmware)
  • Three-phase grid meter
  • Battery storage system with solar

The issue:
On 2026-01-15 between 10:00–10:59, VRM recorded a consumption of 27,432.96 kWh in a single one-hour bucket. This is obviously not real consumption – it appears to be the result of an energy counter reset that VRM interpreted as actual energy usage.

This single erroneous value inflates the entire day’s totals to meaningless numbers in the monthly and yearly overview.

What the other data shows for the same day:

  • The hourly Energy flow chart shows realistic values (under 5 kWh per hour) for all other hours
  • The Grid power graph (W) looks completely normal throughout the day
  • Battery SOC was stable at 55–56% during that hour – consistent with normal operation, not a 27 MWh event
  • Solar energy for the hour: 0.80 kWh – perfectly normal

Screenshots attached showing:

  1. Monthly overview with the January spike
  2. Hourly grid power (W) for 2026-01-15 – looks normal
  3. Dashboard summary cards
  4. Hourly Energy flow chart – looks normal
  5. Tooltip showing the 27,432.96 kWh value in the 10:00–10:59 bucket ← key screenshot

Is there any way to correct or invalidate this specific data point on the VRM side? And is this a known issue with counter resets?

Thanks

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2

What energy meter are you using?
Ia any of this virtual or using modifications?
What software versions are in use?

3

Energy Meter VM-3P75CT, standard installation, no modification, official Venus OS for that date (don’t remember the version). Problem is on that day only

4

Ok thanks.

5

I’ ve seen this before. It will automaticall be repaired after a few days but it is erroneous.

6

Hi!

This was a problem indeed addressed to us by @Hhalewijn , since then it has been fixed in the firmware, so it should not happen anymore on the latest GX firmware!

Would it happen again, please do let us know.

7

OK, but why I have this problem now? I have this issue for the date 15/1/2026. I have the latest official Venus OS

8

It might be a case that this is addressed in the beta version. Could be wrong, but in any case, vrm will self-correct in the interim.

9

The fix was implemented retroactively in the latest stable release of Venus, so it should not happen anymore. Given your message, you had it last January, and that was when this bug was happening in the firmware.

10

I have a similiar issue after adding an existing Shelly as heatpump.
The whole System Overview is messed up when showing data from This Year.

My public VRM is VRM Portal - Victron Energy

11

What is interesting is, that wrong data are only in system overview graph. In the summary they look ok. Same here but just for one day

12

Don’t know if you are using NodeRed for the Shelly, but if this is the case, please check in the virtual device, that “Initialize with defaults” is deactivated.

I had such a problem that sometimes, if the network or something else caused an restart of the shelly virtual device, there was such an fake consumption as well.

13

i am using VenusOS 3.80-14 and directly added the Shelly EM50. I do not use a virtual device through NodeRed.