TSUN + go-e

What Zerofy can do with TSUN and go-e

In practice

• Zerofy can switch your go-e 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.
• Many TSUN systems are small (typically 0.8–3 kW). A balcony system rarely produces the 1.4 kW needed to start charging, so solar charging works best with larger TSUN installations; Smart mode can still move charging to the cheapest hours.
• Zerofy gets new TSUN data every 5 minutes and adjusts accordingly. A minimum runtime and an activation threshold in Autopilot keep passing clouds from interrupting charging.
• If your car is connected to Zerofy too, turn on Autopilot for either the car or the charger, not both.
• The go-eCharger charges from 6 A, about 1.4 kW on one phase and 4.1 kW on three. Zerofy charges single-phase up to about 3.7 kW of surplus and switches to three phases above that; go-e lists automatic phase switching for Gemini models and HOME V3, so older HOME units stay on the phases they are wired with.

What TSUN and go-e offer on their own

TSUN: TSUN offers no EV charger and no surplus-charging function. An 800 W balcony system also stays below the about 1.4 kW a charger needs at its 6 A minimum.

go-e: go-e’s own route to surplus charging is the go-e Controller, which measures the house connection with six current sensors and works with any inverter brand, including automatic 1/3-phase switching. Without the Controller, go-e relies on external energy managers through its open API, Modbus TCP or OCPP.

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

Setting up TSUN and go-e in Zerofy

1. Connect TSUN

Zerofy connects to the TSUN cloud with your TSUN Smart login and reads your inverter data.

1. Register your system in the TSUN Smart app.
2. In Zerofy, add an inverter, choose TSUN and log in with your TSUN Smart credentials.

Good to know: Only TSUN Smart accounts work (inverter IDs starting with Y); TSUN Home accounts are not supported. Battery and meter data are only partly available, depending on the system.

Step-by-step guide for TSUN

2. Connect go-e

Zerofy uses the go-e Cloud HTTP API with your charger’s serial number and API token, sets the charging current and switches between one and three phases.

1. Update the charger to firmware 052 or later and the go-e app to 2.3 or later.
2. In the go-e app, go to Internet → Advanced Settings and turn on the Cloud HTTP API.
3. Copy the API token shown there and enter it in Zerofy together with the charger’s serial number.

Good to know: Supported are Gemini 2.0 (serial 400000+), Gemini (200000–399999) and HOME (050000–199999).

Step-by-step guide for go-e

3. Turn on Autopilot

In Zerofy, open your go-e 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 go-e 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 TSUN solar production.

Learn more about Smart Mode

About TSUN and go-e

TSUN – TSUN (TSUNESS Co., Ltd., Suzhou, China, with a German office in Frankfurt) makes microinverters from 300 W single units to 3.3 kW 6-in-1 units. In Europe it is mainly found in 800 W balcony systems such as the TSOL-MS800, often combined with TSUN balcony storage (MSU2000, MSU4000Elite). Monitoring app: TSUN Smart.

go-e – go-e is an Austrian charger maker. The current go-eCharger Gemini 2.0 (11 or 22 kW) has documented local and cloud APIs, MQTT, Modbus TCP, a freely configurable OCPP backend and an eSIM; according to the data sheet it is not approved for the Netherlands, France or Italy. Products: go-eCharger Gemini 2.0, Gemini, HOME.

Manufacturer information last checked: October 2026.

All devices that work with TSUN