Hoymiles + Zaptec

What Zerofy can do with Hoymiles and Zaptec

In practice

• Zerofy can switch your Zaptec charger between one and three phases. Solar charging can therefore start at about 1.4 kW of surplus (6 A on one phase) and move to three phases once the surplus passes about 4.1 kW.
• 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.
• 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.
• Ask whoever set up the charger to make you site owner in the Zaptec portal or to grant the permissions; otherwise Zerofy can only switch charging on and off instead of following the surplus. With phase switching the Go 2 starts at about 1.4 kW on one phase; on three phases it needs about 4.1 kW.

What Hoymiles and Zaptec 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.

Zaptec: Since June 2026 Zaptec offers its own solar charging in the Netherlands, Belgium, Germany, Switzerland and Luxembourg for Go, Go 2 and Pro. It needs a Zaptec Sense (Generic or P1) that detects local production, a Home installation with up to three chargers and a TN grid; the app then offers “Surplus + grid” and “Surplus only”.

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

Setting up Hoymiles and Zaptec 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 Zaptec

Zerofy connects with your Zaptec portal login and controls charging, current and phases through the Zaptec cloud.

1. Make sure your Zaptec charger is online and registered in the Zaptec portal.
2. In Zerofy, add a Zaptec charger and enter your Zaptec portal credentials.

Good to know: Only the site owner in the Zaptec portal may change current and phases. Without that permission Zerofy can only start and stop charging, and the app tells you so. Charging sessions only appear in the history after the car has been unplugged.

Step-by-step guide for Zaptec

3. Turn on Autopilot

In Zerofy, open your Zaptec 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 Zaptec 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 Zaptec

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).

Zaptec – Zaptec is a Norwegian charger maker. The Zaptec Go 2 is a very compact 22 kW charger with a MID meter, free built-in 4G and automatic switching between one and three phases, and like Easee it also runs on 3×230 V IT grids. Products: Zaptec Go 2, Zaptec Go, Zaptec Pro.

Manufacturer information last checked: October 2026.

All devices that work with Hoymiles