On-grid inverters and hybrid inverters are two different types of inverters used in solar power systems, and their working principles differ significantly. On-grid inverters are used in grid-tied solar power systems where solar panels are directly connected to the utility grid. These inverters convert the DC power generated by the solar panels into AC power that can be fed directly into the grid. When the solar panels are producing more power than the load demands, the excess power is exported to the grid, and when the load demands more power than the solar panels are producing, the grid supplies the shortfall. On-grid inverters typically do not have batteries or a backup power source, and they do not provide power during a grid outage. Hybrid inverters, on the other hand, are used in hybrid solar power systems that combine solar panels, batteries, and a backup power source such as a generator set. These inverters can work in both on-grid and off-grid modes, depending on the system configuration and the availability of grid power. When the solar panels are producing more power than the load demands, the excess power is used to charge the batteries, and when the load demands more power than the solar panels are producing, the batteries discharge to supply the shortfall. If the batteries become depleted and the solar panels cannot meet the load demand, the backup power source is activated to provide power to the load. Hybrid inverters manage the power flow between the solar panels, batteries, and the backup power source, ensuring optimal use of available power and efficient energy management. In summary, the main difference between on-grid and hybrid inverters is that on-grid inverters are used in grid-tied solar power systems, while hybrid inverters are used in hybrid solar power systems that combine solar panels, batteries, and a backup power source. On-grid inverters feed excess power back to the grid, while hybrid inverters manage power flow between the solar panels, batteries, and backup power source to provide optimal use of available power and efficient energy management.