On Grid Solar System
On Grid or grid-tie solar systems re the most common nd widely used by homes and businesses. These systems do not use batteries and use common solar inverters and re connected to the public electricity grid. Excess solar power generated is exported to the electricity grid ad you usually get paid in tariff(FIT) or credits for the energy you export.
On Grid Solar systems are not able to function or generate electricity during a blackout dur to security reasons. Since, power cuts usually occurs when the electricity grid damages, if the solar inverter still feeds elecricity into a damaged grid, it would risk the safety of the people repairing the fults in the network.