A simple definition
A hybrid inverter is an inverter that can work together with the panels, a battery and the grid. It converts the direct current from the panels into alternating current, but it also manages the charging and discharging of the battery.
How it differs from an ordinary inverter
A grid-tied inverter sends energy to the house and to the grid, but cannot work with a battery. A hybrid inverter decides, according to its settings, whether the energy produced goes to consumption, to the battery or to the grid. Some models also have a backup output for power cuts.
What you should check
- nominal power: it has to cover consumption and the panels;
- panel inputs: the number of inputs and the voltage limits;
- battery compatibility: voltage and communication;
- backup function: whether there is one, how much power it can supply and how quickly it switches over;
- monitoring: app, meter, updates;
- warranty and service.
When it is worth it
It makes sense if you want a battery now or later, if you want a reserve for power cuts, or if you want to use more of the energy you produce in the evening. If most of your consumption is during the day and you do not want a battery, an ordinary inverter may be enough.
See also hybrid solar systems and battery storage.