Advantages of Grid-Tied Systems.
1. Save more money with net metering
Your solar panels will often generate more electricity than what
you are capable of consuming. With net metering, homeowners can put
this excess electricity onto the utility grid instead of storing it
themselves with batteries.
2. The utility grid is a virtual battery
The electric power grid is in many ways also a battery, without the
need for maintenance or replacements, and with much better
efficiency rates. In other words, more electricity goes to waste
with conventional battery systems.