On-grid, or grid-tied, means the inverter can generate power when connecting to the grid. When the grid is disconnected or cut-off, the on-grid inverters will stop until the grid is back due to anti-islanding requirements.

We have single phase from 600W to 8kW, and three phase from 3kW to 150kW. For more details, please refer to this page: https://www.solaxpower.com/x1-boost

Yes, actually string inverters doesn't have battery management unit integrated. SolaX provides a string inverter + retro-fit + battery storage solution, which makes it possible to extend battery storage to existing string inverter system.

You can check the system information on SolaX Cloud via Wi-Fi, LAN or 4G dongle. The data includes voltage(U)/Current(I)/Power(Pin and Pout) of PV side and grid side, energy flow diagram, energy of self-use and export to the grid(*meter or CT installation is required) and other detailed info.

The on-grid inverter can be offline at sunset without enough solar input. If you still want to monitor your system at night, you will need SolaX on-grid inverter with a built-in AC auxiliary power supply(APS) and SolaX smart energy meter/CT to achieve 24 hours energy monitoring.

It's working for any third-party on-grid inverter and there has 3 requirement for on-grid inverter:

1. Support 'Response to an Increase in Frequency'

2. On-grid inverter output power < Max Hybrid inverter EPS output power

3. On-grid inverter output power < Max battery charging power

Modbus solution: This solution is applicable to X3-PRO G2 and X1-BOOST G4. With the same series, it supports up to 5 inverters in different power sizes paralleled through Modbus.

Datahub solution: Datahub is a datalogging device, which can support all SolaX string inverters including X1-MINI G4, X1-BOOST G4, X3-MIC G2, X3-PRO G2, X3-MEGA G2, X3-FORTH and the maximum parallelling number is 60.

Yes, the string inverters can achieve zero export control.

In the Micro-grid system, the on-grid inverter can still work when there has power outage.  The wasted on-grid inverter PV energy been saved.

Yes. You can use local mode or operate on the LCD screem directly.

X1-MINI G3/G4, X1-BOOST G3/G4, X1-SMART, X3-MIC G2, X3-PRO G2 equipped with LCD screen by default.

For X3-MEGA G2 and X3-FORTH,  the LCD screen is optional. 

Yes, a meter or a CT is needed for export control(In the on-grid inverter series,only single phase on-grid inverters are compatible with CT,three phase on-grid inverters are not compatible with CT) . Once a meter or a CT is connected, you should configure the inverter via LCD screen(App for non-screen version). Go to setting item 'Export control' to enable meter(or CT) and then confirm how much power to inject to the grid. If you want zero injection, you just need to set the value to 0.