Here are the key points that are usually adjusted or added:

1. Main fuse: In some cases, it is necessary to increase the main fuse to have sufficient capacity for the extra power that the solar panels will generate. This is assessed by an electrician based on the current load and the expected power of the solar panels.
   
   

2. Breaker box: Extra circuits need to be added to the breaker box to connect the solar panels. Typically, a separate circuit is added for the inverter and sometimes also for the charging station if you have one.
   
   

3. Residual current device: It may be necessary to install an additional residual current device to protect the solar panels. This depends on the specifications of your existing residual current devices and the requirements of the solar panel installation.
   
   

4. Smart meter: If you do not yet have a smart meter, a new smart meter may need to be installed. This enables the measurement and tracking of the energy yield of the solar panels.
   
   

5. Electrical cables: Cables need to be laid from the solar panels to the inverter and from the inverter to the breaker box. These cables must be suitable for transporting the generated electricity and must be safely installed.

It is important to emphasize that the exact adjustments in the meter box can vary depending on the specific situation and the requirements of the solar panel installation. It is advisable to consult a professional electrician who has experience with solar panel installations to determine and implement the correct adjustments in your specific situation.