SolarEdge + Huawei SCharger

What Zerofy can do with SolarEdge and Huawei SCharger

In practice

• Zerofy adjusts the charging current of your Huawei SCharger but doesn’t switch phases. On a three-phase connection, solar charging needs at least about 4.1 kW of surplus (6 A × 3 × 230 V); on a single-phase connection about 1.4 kW.
• A typical SolarEdge home system (3–10 kW) needs a sunny midday to reach the 4.1 kW three-phase minimum. Wired single-phase, the charger starts from about 1.4 kW but charges at no more than about 3.7 kW.
• Zerofy gets new SolarEdge data every 5 minutes and adjusts accordingly. A minimum runtime and an activation threshold in Autopilot keep passing clouds from interrupting charging.
• Zerofy also shows your SolarEdge battery, so you can see whether surplus goes into the battery or into the car.
• If your car is connected to Zerofy too, turn on Autopilot for either the car or the charger, not both.
• In Huawei’s own mode, the 22KT charges three-phase from about 4.14 kW and drops to single-phase below that if “Switch Between Single and Three Phases” is on; it then charges on L1 only, so Huawei advises wiring L1 to the least-loaded phase. Via OCPP, Zerofy sets the power but not the phases, so the minimum is 6 A: about 1.4 kW single-phase or 4.1 kW three-phase.

What SolarEdge and Huawei SCharger offer on their own

SolarEdge: SolarEdge sells its own EV charger, controlled from the mySolarEdge app. With the SolarEdge ONE Controller (inverter firmware 4.22 or later), mySolarEdge can instead run one third-party OCPP 1.6J charger with Excess Solar charging: MENNEKES AMTRON, Wallbox Pulsar Max/Plus/Pro, Alfen Eve S-line/Pro-line or ABB Terra AC. Only one charger can be used at a time.

Huawei SCharger: Huawei’s own surplus mode is “PV Power Preferred” in FusionSolar. It needs a Huawei SUN2000 inverter and a Huawei Smart Power Sensor at the grid connection (DTSU666-FE directly, or an RS485 meter such as DTSU666-H relayed by the WLAN/FE Smart Dongle) and does not work in charger-only setups.

Zerofy connects the two: it reads SolarEdge production and controls your Huawei SCharger to match, together with your other devices in one app, with dynamic tariffs and forecast-based Smart mode.

Setting up SolarEdge and Huawei SCharger in Zerofy

1. Connect SolarEdge

Zerofy connects to SolarEdge’s monitoring cloud with the same login you use for the SolarEdge Monitoring website or the mySolarEdge app.

1. Make sure your SolarEdge inverter is online and your account has the Owner role on the site.
2. Add a new SolarEdge device in Zerofy.
3. Log in with your SolarEdge Monitoring / mySolarEdge credentials and follow the on-screen prompts.

Good to know: Your account needs the Owner role, which the installer usually assigns to the system owner during setup; ask your installer if you don’t have it. Battery and meter data depend on how your system is configured.

Step-by-step guide for SolarEdge

2. Connect Huawei SCharger

The SCharger connects to Zerofy via OCPP, which is set in installer mode of the Huawei Fusion app; Zerofy can then start, stop and set the charging power.

1. Update the charger to FusionCharge V100R023C10SPC220 or later (OTA via the app).
2. In Zerofy, add a Huawei SCharger and copy the OCPP link (ocppconnect.net/<id>).
3. In the Fusion app, connect to the charger’s Wi-Fi, log in with Installer Mode and open OCPP.
4. Choose “Insecure transmission with basic authentication” and enter domain ocppconnect.net, port 80, path and username <id>, and any password.

Good to know: OCPP can only be set in installer mode, so many owners need their installer for the one-time setup. Older firmware must be updated first.

Step-by-step guide for Huawei SCharger

3. Turn on Autopilot

In Zerofy, open your Huawei SCharger, turn on Autopilot and choose Solar – or Smart to also use dynamic tariffs and forecasts. Set the priority, activation threshold and minimum runtime.

Dynamic tariffs

Zerofy can also run your Huawei SCharger on dynamic electricity prices (EPEX Spot or Nord Pool, e.g. Tibber or aWATTar) or on a fixed time-of-use tariff. Smart mode combines those prices with forecasts of your household consumption and your SolarEdge solar production.

Learn more about Smart Mode

About SolarEdge and Huawei SCharger

SolarEdge – Israeli company (Herzliya) known for inverters with a power optimizer on every module. Homes typically have a SolarEdge Home Wave single-phase or Home Hub three-phase inverter with optimizers, often with a SolarEdge Home Battery and SolarEdge Home smart-energy accessories. Monitoring app: SolarEdge Monitoring / mySolarEdge app.

Huawei SCharger – The SCharger is the wallbox of the Chinese inverter maker Huawei (7.4 kW single-phase or 22 kW three-phase), the natural choice for homes with a Huawei inverter. It is sold through solar installers and is set up and monitored in FusionSolar. Products: SCharger-7KS-S0, SCharger-22KT-S0.

Manufacturer information last checked: October 2026.

All devices that work with SolarEdge