For all its environmental and other sustainability benefits, rooftop solar suffers from one big problem – it is not a 24×7, reliable source of electricity.
Unless of course you consider using a battery along with the solar panels; or using a diesel generator in conjunction with the solar panels.
If you are going for any of the above-described combinations (solar with storage or solar with diesel), you will need an inverter that is different from an inverter for a pure grid-tied inverter.
So, is it a good idea to for hybrud inverters for your rooftop solar solution? Here are the folks from Solar Mango answering this question. (part of Innovations in Solar series)