In some part of our country, the cos phi is 0.9 while in some other is still 0.8. The higher the cos phi the better. The power is belong to government (say the name is MAINS). Different cos phi is possible as the they are on a a different network, in a different island.
I would like to install 150KVA ON-GRID solar panel using a 330 Watt output power of each panel (output of a single independent panel theoretically is 330 watt. By connecting some panels parallel and invert it to AC from DC, expected will meet the requirement). The output of the panels we will use internally. But as no guaranty that the power the panel produce will be enough for our need (as could be cloud, rain, etc), the solar panel system will still be (inter)-connected to the MAINS. Once the power produced by the solar panel is not enough, than system will draw from MAINS by the ON GRID inverter. Means, there will be two electric sources for us. From MAINS and from solar panel.
Then my question is, what will happened to all the electric equipment or to our network if the cos phi are not same? Say, the MAINS' cos phi is 0.9 while our cos phi is 0.8 or something like that.