Hi,
I want to install P1 monitor as an intergration in HA.
It ask for a hostname what should i fill in?
You should fill in the hostname or ip address.
yes did fill in the ipadress of the RPI, Internet provider and Desktop however still got the error: cannot make connection
What integration exactly is this?
energy
I think i know what i’m doing wrong.
I think i need 2 RPI.
One connected to the p1 port with p1monitor software
and one RPI with HA with P1monitor intergration.
i’m i correct?
Yes. Unless you use HassOS (or someone creates an add-on for the P1 monitor software) , everything can run on the same RPi, though.
I have HassOS and installed the P1monitor intergration however i need to provide an ip-adress (see my initial question).
I can’t figure out what ip-adress should fill in 
Where do you have the P1 Monitor software running? It is the IP address of that computer.
sorry this topic can be close. Not using P1monitor anymore