u/Tough_Raspberry3862

I have a background of electrical/electronics engineering so have worked through the basics of current voltage resistance phase etc. I am not sure how a source of power from plugin solar is distributed solely to your own devices and not exported to everyone on the same street/circuit? I can see that the solar plug can detect the voltage and phase when connected and will provide current in phase. As far as I am aware there is just copper wire to the consumer unit that is then connected to an entry point at the meter. So if no block on power flows out of the consumer unit what’s stopping it leaking out?