Size of the E-meter cabinet

For a normal standard single-family house with an air heat pump, the electricity meter or the cabinet for it usually has how many fields for meters? Our electricity provider requires a two-way meter and a disconnection device for the heat pump so that you can disconnect the heat pump from the grid.

Or to put it another way, in which standard sizes are meter cabinets available with 1/2/3/4 fields? Or only in increments of 2/4/6 etc.?

Ask again exactly about the extra meter and switching off. Do you have photovoltaics?

For us, switching off is only required by the grid operator from X KW and if there is a heat pump tariff. Without a tariff and under X KW, it is not.

We practically have a meter cabinet for a single-family house with a heat pump included in the contract. Due to a photovoltaic preparation requested by us, we are now supposed to pay an additional price for an expansion of the meter space. So far so good. So in my opinion, I would have a meter cabinet for the house installation plus heat pump included in the basic contract? That makes 3 meter spaces 1 x normal power grid 1 x secondary meter for the heat pump and 1 meter space for the ripple control device or whatever the thing is exactly called. If there are only meter cabinets with 2 or 4 or 4 spaces anyway, I would theoretically have the 4th meter space for the photovoltaic included without any additional costs?

In a normal standard single-family house with an air heat pump, how many fields for meters does the electricity meter or the cabinet for it usually have? Our electricity provider requires a bidirectional meter and a disconnect device for the heat pump so that they can take the heat pump off the grid?

2 fields for meters + your fields for the electrical system.

Or put differently, in which standard sizes are meter cabinets available with 1/2/3/4 fields? Or only staggered 2/4/6 etc.?

2 fields is usually designed so that you have meters on the left and electrical on the right. With 3 fields, you can use 2 or 3 meters. Photo of 3 meters attached.

If there are basically only meter cabinets with 2 or 4 or 4 slots, I theoretically have the 4th meter slot for photovoltaics included without additional cost?

Why a 4th meter slot for photovoltaics now?
1 - standard feed-in
2 - heat pump
3 - photovoltaics

Edit: It may be that the cabinet is not allowed in your case because of the height. Then you need 3 fields for the meters + your electrical system. So at least 4 in total. With some extra space rather 5. + multimedia field

But your electrician should know that, right?

The heat pump does not necessarily need its own meter; it can also be connected to the household electricity without a disconnection device. This is especially suitable together with [Photovoltaik], and the second basic fee is waived.

2 fields for meters + your fields for the electrical installation.

2 fields usually means you have meters on the left and electrical installation on the right.
With 3 fields, you can use 2 or 3 meters. Photo of 3 meters attached.

Why a 4th meter slot now for the photovoltaic system?
1 - standard feed-in
2 - heat pump
3 - photovoltaic

Edit: It may be that the cabinet is not allowed in your case due to the height. Then you need 3 fields for the meters + your electrical installation. So at least 4 in total. With some leeway rather 5. + multimedia field

But your electrician should know that, right?

The utility requires a two-direction meter for the heat pump.

And I thought the ripple control receiver for the heat pump would occupy the space of the fourth meter, hence in my opinion the 4 meter slots.

If the general contractor contractually includes a meter cabinet for house installation and heat pump, which one must be included in his calculation: a meter cabinet for 2 meter slots or one for 3 meter slots? If I operate nationwide, do I not have to reckon as a general contractor that a house power meter plus heat pump meter plus ripple control receiver are necessary? And if yes, what do I then have included in the base calculation: two meter slots, three meter slots or four meter slots?

Or put differently: if I save on paper the expansion of the meter cabinet for the photovoltaic system, how much space do I really have if the ripple control device, heat pump meter and house power meter are already inside? Will there still be room for a photovoltaic meter if I eventually install a photovoltaic system on the roof?