Why does VRM not show my AC input in the consumption chart?

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groningen asked Aug 30, '23

Why does VRM not show my AC input in the consumption chart?

I noticed this morning that my graph on VRM does not show the "charge (grid)" consumption in the scales.

For reference, I was off-grid until 2 am this morning and used the Grid to charge my batteries from roughly 60% to 100%. The charge ended at approximately 3:30 am. I am running ESS.

As shown in the picture below (image 1), the RED consumption is normally a combination of solar and grid-in. Obviously no solar production between 2 am and 4 am, but the red bars stays flat at 0.5 kWh between 2am and 4am.

If I make a guesstimate, I consumed 2.3 kWh (grid) to top up the pack but it seems that it is not registered on the Grid - in consumption as the red lines stay flat.

Also, if I check the top icon display (as shown in image 2 below), it did registrar that it consumed 2.5 kW for just over one hour.

I am just checking if this is the case that VRM might have glitch? Unless "AC input" (top display icon in VRM) is not the same as "from AC input" bottom display icon.

Image 1

Image 2

vrm bug

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vrm-issue-2.png (5.3 KiB)

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Guy Stewart (Victron Community Manager) answered · Aug 30, 2023 at 08:08 AM

Hi @Groningen,

In VRM the 'Consumption' figure is measuring what energy goes to loads, it does not include what is going into battery.

The AC input figure could be either going to loads, or to the battery (or both). So it's normal that they may or may not line up.

To see where your AC input energy went, you can change the view from System Overview, to Grid in the pull down menu;

cleanshot-2023-08-30-at-180459.jpg (205.7 KiB)

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Modifications Space

Node Red Space

Answer 1 · 2023-08-30T08:44:05Z

groningen answered · Aug 30, 2023 at 08:44 AM

@Guy Stewart (Victron Community Manager)

Clear, thank you for the prompt response.

Also, I agree that the title is (now) clear to anyone that has a similar question.

Thank you again for clear explanation.

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Answer 2 · 2023-08-30T11:50:22Z

groningen answered · Aug 30, 2023 at 11:50 AM

@Guy Stewart (Victron Community Manager)

I have a follow-up question (if I may) regarding the System overview then.

The Overview only displays the load consumption (solar, grid and battery combined), solar production (plus forecast) and grid to load consumption (and if you feed in) - Clear from your reply.

Question then, I have to add the System overview consumption (as shown in image 3 below - 6.8 kWh) and the grid "to battery" (as shown in image 4) (3.1 kWh BLUE) to achieve the "overall grid consumption" ? (If I understand it then correctly).

In my case, I would take the 6.8 kWh plus the 3.1 kWh to get to the Overall Grid Consumption i.e. 9.9 kWh. (?)

If so, does the VRM provide a "overall grid consumption" tab (one can correlate to your service provider)? Just curious if such a option is available.

Image 3

image 4

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vrm-issue-4.png (23.3 KiB)

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