Hoymiles + Wallbox

What Zerofy can do with Hoymiles and Wallbox

In practice

• Phase switching for Wallbox is coming to Zerofy. Until then the charger uses the phases it’s wired with, so on a three-phase connection solar charging needs at least about 4.1 kW of surplus (6 A × 3 × 230 V).
• Hoymiles systems range from balcony kits to rooftop systems (0.8–10 kW). A balcony system never reaches the 1.4 kW needed to start charging; a rooftop system of a few kW does on bright days, and three-phase charging needs about 4.1 kW.
• Zerofy gets new Hoymiles data only every 15 minutes, so charging reacts to clouds with some delay. A slightly higher activation threshold and a minimum runtime in Autopilot keep it steady.
• If your car is connected to Zerofy too, turn on Autopilot for either the car or the charger, not both.
• Wallbox’s Full green mode needs 6 A of surplus, about 1.4 kW single-phase or 3×6 A (about 4.1 kW) three-phase, and Wallbox asks for the inverter to be set to export mode. The Wallbox solar mode measures with its own meter, but Zerofy does not need it: Autopilot works out the surplus from the inverter you have connected.

What Hoymiles and Wallbox offer on their own

Hoymiles: Hoymiles sells its own AC chargers (VAS-7-G2 single-phase 7 kW, VAT-11-G2 and VAT-22-G2 three-phase) with a green power mode that follows PV surplus, but only together with a Hoymiles storage inverter (HYS, HAS, HYT, HAT), not with microinverters. An 800 W balcony system on its own never reaches the about 1.4 kW a charger needs at its 6 A minimum.

Wallbox: Wallbox’s own Solar Charging (formerly Eco-Smart) needs a power meter sold by Wallbox at the grid connection and offers “Eco” (solar plus grid) and “Full green” (surplus only). With the meter, Pulsar Max and Pulsar Pro can drop from three to one phase when surplus is low (“3P Optimization”; tethered Pulsar Max units from August 2025 production); no inverter brand is read directly.

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

Setting up Hoymiles and Wallbox in Zerofy

1. Connect Hoymiles

Zerofy connects to the Hoymiles S-Miles Cloud with your S-Miles account and reads your PV production.

1. If your installer hasn’t set up your plant yet, register it in the S-Miles Installer app (use DIY mode if you install it yourself).
2. In Zerofy, add an inverter, choose Hoymiles and log in with your S-Miles credentials.
3. Use Autopilot (Solar Mode) to switch devices on solar surplus.

Good to know: Zerofy reads PV production only from Hoymiles, not grid meter or battery data, and stores the power history in 15-minute steps (5 minutes for most other brands).

Step-by-step guide for Hoymiles

2. Connect Wallbox

Wallbox chargers connect to Zerofy via OCPP 1.6J, which you switch on in the myWallbox app; Zerofy shows you the exact server and charge point identity to enter.

1. In Zerofy, add a Wallbox charger and copy the Server and Charge point identity.
2. In the myWallbox app, open the charger settings, go to External Management → OCPP and turn OCPP on.
3. Choose OCPP provider “Other”, paste both values, leave the password empty and save; the charger reboots and connects within 1–3 minutes.

Good to know: The charge point identity is case-sensitive, so use the copy buttons. While OCPP is active, charging is controlled from Zerofy instead of the myWallbox app; firmware updates, restarts and network settings stay in the myWallbox app.

Step-by-step guide for Wallbox

3. Turn on Autopilot

In Zerofy, open your Wallbox charger, 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 Wallbox charger 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 Hoymiles solar production.

Learn more about Smart Mode

About Hoymiles and Wallbox

Hoymiles – Hoymiles (Hangzhou, China) is one of the largest microinverter makers. In Europe it is best known for balcony systems such as the HMS-800W-2T (switchable 600/800 W) with the MS-A2 balcony battery, and it also sells HYS/HYT hybrid inverters with home batteries. Monitoring app: S-Miles Cloud (S-Miles app).

Wallbox – Wallbox is a Spanish charger maker whose small Pulsar series is one of Europe’s most widely sold wallboxes, as a tethered or socket version. In Germany, Austria and Switzerland it is also sold as ABL Pulsar. Products: Pulsar Plus, Pulsar Max, Pulsar Pro, Commander 2, Copper SB.

Manufacturer information last checked: October 2026.

All devices that work with Hoymiles