Smart Meter / Smart Meter Gateway / Device Control

Hello everyone,

since a heat pump is being installed for me, I probably also have to update my meter cabinet to comply with §14.
Now I am currently considering whether I should also jump on the smart meter topic. Therefore, a few questions:

If the supplier installs this for me (max. 20/30€ for installation), then the system consists of a digital meter + smart meter gateway, correct?
1. Can I then read the data somewhat live (and from then on also history) or is a paid subscription required for that?
2. Does this also allow active control of individual systems (heat pump, etc.) or is additional technology needed for that?
3. Is this easily possible with my current meter cabinet (hager ZH22S) or does it probably have to be expanded?

Best regards

Regarding 1: For us, this "gateway" is simply a mobile modem. It sends the data to the network operator every 15 minutes. Depending on the operator, you can then access it via a website – without additional costs. Regarding 2, no one can say anything yet. Currently, it already works via certain techniques. Regarding 3: As I see it, you have a "three-point mounting" and enough space.

In detail, however, you should discuss everything again with the network operator. So in relation to 14a etc. What is also important: If you get a smart meter with a gateway, it usually requires a mobile connection. For me, it was sufficient to install the antenna in the meter cabinet (it is not located in the basement). It is also possible that the antenna must be installed outside the meter cabinet.