ᐅ Photovoltaic system, heat pump, household electricity, and three bi-directional meters

Created on: 10 Mar 2023 17:10

Hello everyone,

We have bought a house with the following setup:

Photovoltaic system -> inverter -> meter ZE (photovoltaic generation) -> household electricity -> meter Z2 (household electricity) -> heat pump -> meter Z1 heat pump

ZE = meter with feed-in and non-return valve
Z1 = meter for consumption and feed-in
Z2 = submeter for consumption

All meters are bidirectional meters.

Now I don’t understand the following:
Why are three bidirectional meters needed here, or what is the purpose of this setup?
Unfortunately, I cannot find any information about this in the documents.

Araknis13 Mar 2023 11:45

This is how it looks. If the distribution system operator requires it, you simply have to pay.

Phansol13 Mar 2023 12:46

Exactly, I think that’s how the setup looks—only that the Z2 here is also a two-way meter.

So far, I haven’t had to pay anything—are these meters always rental equipment? I’m not particularly keen on having to pay rent for meters that I don’t really want or need 😀

Araknis13 Mar 2023 13:16

These are almost always rental devices. You could ask the grid operator if this is possible with two meters. Unless you have some kind of developer or residential area setup where you have no influence.

RotorMotor13 Mar 2023 13:26

#10

The metering point operator may charge up to €20 per year for each modern metering device.
The phrase "up to" means that they are not required to charge a fee; if they do not charge, then everything remains as is. ;-)

ᐅ Photovoltaic system, heat pump, household electricity, and three bi-directional meters

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