Residential PV Line Connections without meter

[cjcoronel21]

How can you verify that all the consumption of your PV system connected on the line sidde is being absorbed at the bus bar without having a meter? I assume using kirchoff's current law that you can verify it is but what is holding it back from backfeeding the system? This is just making me think, I would think you would like a meter and then net meter from the PV production and the utility consumption.

Any explanation will be appreciated.

 

[DTR2011]

you need a meter. how else would you know the output of the PV? the sunlight - thus kW output varies constantly.