On-grid solar systems are by far the most common and widely used by homes and businesses. These systems do not need batteries and use common solar inverters and are connected to the public electricity grid. Any excess solar power that you generate is exported to the electricity grid and you usually get paid a feed-in-tariff (FiT) or credits for the energy you export. Unlike hybrid systems, on-grid solar systems are not able to function or generate electricity during a blackout due to safety reasons.