3 phases public network with installation photovoltaic 1 phaseon web interface?

Hello,

It does not matter where the energy monitor is installed, it is possible in another room.

Just add all your Energy monitors to one account.

But it will be better to move the D103 Extended 3-line Energy monitor to the point C_D

Positioning the arrow on the Current Transformer (CT) towards the consumer (towards the house).

The D103 has two data parameters (for Extended version):
[TW] Total-Power - all energy which flows in the direction of the arrow on the CT (this is point C)
[TrW] Total-Rev.Power - all energy which flows versus arrow on CT (this is point D)

The 1-phase D101 is installed correctly in point A
The arrow should look towards the consumer (from the inverter).

Next, create the Virtual value to calculate the point B:

B = A + C - D
B = D101[W] + D103[TW] - D103[TrW]

In the settings, the Virtual value will look like this:

Then you can use Virtual device -> Point B in your widgets.

Or given the current installation:

Point C_D = Household consumption minus Generation

Point C_D = D103[TW] - D101[W] 

Point C = everything greater than zero (consumed energy)

Point D = everything less than zero (sold energy)