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

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.

Yes, currently the following SolaX string inverters are compatible with heat-pump control (SG ready heat pump) via connecting to SolaX adaptor box：

X1-MINI G4

X1-BOOST G4

X3-MIC G2

X3-PRO G2

X1-Hybrid G4

X3-Hybrid G4

X1-Mini G3/G4

X1-Boost G3/G4

X3-MIC G2

X3-PRO G2

X1-Hybrid G4

X3-Hybrid G4

X1/X3-Hybrid G4, X1-Boost G4, X1-Mini G4, X3-MIC/PRO G2

X1-MINI G4, X1-BOOST G4, X3-MIC G2, X1/X3-Hybrid G4

Only X1-Hybrid G4 can control it by connecting to EPS port.

The second meter is used to monitor the power situation of the 3rd party on-grid inverter, is not necessary for the AC coupling system.

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

Yes, the string inverters can achieve zero export control.

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

The 3-phase string inverters cannot use CT,  you need to choose a meter or meter with CT (Please note that the meter needs to be SolaX version.)

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. 

If you disable 0 export control, excess energy will be injected to grid. If you enable 0 export control, inverter will limite generation power.

No, but it's better to work online, as we can provide remote support if there is any issue happened.

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.

In this sytem,  you need two meters, the first meter is at the Grid Connection Point, and the second meter is going to measure the output of the string inverters. Both meters are connecting to the hybrid inverter. Please note zero-export control is not avaialble in this system.

Yes. (Only WiFi2.0/WiFi3.0/WiFi+LAN adaptations have been updated so far)