Is there a easy way to make the "AC Input" show how many watt is coming into the system when connected to shore power? Will ex a ET112 or another current sensors be able to do that through USB or the GPIO ?
Installation consist of following equipment
In all the latest Venus firmwares there is an option under settings called Energy Meters. There you can set up the role each meter does in your system. If you add an ET112 on the AC input you can then measure that, or even set that meter as the grid point.
Do you know how to connect the ET112 to the Raspberry? Can it be done through USB or GPIO ?
The best is to use a USB-RS485 converter. You can also use a RS485 HAT that works through the GPIO, but for that you need to add a line or two to the raspberry's config file. With the USB option it is plug-and-play.
https://www.waveshare.com/rs485-can-hat.htm
https://github.com/victronenergy/venus/wiki/RaspberryPi-CAN-Interfaces
Not all meters are supported. Other than the ET112 and larger range the ABB meters are also supported now from VenusOS 2.92
https://www.victronenergy.com/upload/documents/Datasheet-Energy-Meters-Selection-Guide-EN-.pdf
If you want to add others you will need to get/code a driver for them - not so easy but not impossible.
