We had to search for a long time before we even found an electrician who would take it on. The cost didn’t matter anymore,... I think we paid between 1000 and 1500.
Don't be mad at me - but you come across quite irritated. If "reasonable and detailed" discussions about the topic of additional construction costs had "taken place," you certainly wouldn't be asking about the construction site power meter; certainly not whether you can apply for it yourself.
Rhineland greetings
It shouldn't come across as "irritated" at all! The possibilities for application were not discussed, only that costs are incurred for this. But if you can maybe save a few euros...
So best have the construction company organize it?