As you may know, the function of an inverter is to convert DC power coming from the solar panels to AC. A hybrid inverter facilitates storage of some or all of this power by including the provision of connecting a battery or serve as an alternate source of electricity with diesel gensets.
Hybrid inverters ensure that there is an option of getting the power from batteries or diesel genset when the solar panel is not producing power. Essentially, it combines the functions of off-grid and grid-tied inverters. These are especially resourceful in areas that are prone to blackouts or frequent power outages and there is a need for uninterrupted power supply.
Despite their merits, hybrid inverters suffer from a lot of complexities in design. Moreover, the cost is pretty high too. They cost probably 1.5 times that of a conventional inverter.
Consumers who wish to enjoy solar power in the absence of grid power should consider a solar plant with a hybrid inverter that can integrate with a diesel generator or with batteries. In fact, many commercial and industrial facilities that require continuous power supply do go for this option.