go-e Controller

The go-e Controller

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The go-e Controller ensures that surplus electricity from a PV system is used to charge electric vehicles. This helps you get more from your investment in photovoltaics by increasing self-consumption. With dynamic load management, the go-e Controller helps prevent the building connection from being overloaded: when load peaks are detected, it automatically reduces the charging power of EVs and plug-in hybrids connected to go-e Chargers and increases it again as soon as sufficient power is available.

The go-e Controller is compatible with all go-e Chargers (PRO, Gemini, Gemini 2.0 and HOME series), all types of PV inverters* and AC-coupled battery storage systems**.

*PV optimisation is also possible without directly measuring production at the inverter. Self-generation can be measured and visualised via a sensor for AC inverters only.

**A DC-coupled battery storage system cannot be measured directly, but a setting in the app can prevent it from being continuously discharged while the EV is charging (not available with HOME V2).

Energy monitoring with the go-e Controller

The go-e Controller lets you monitor the energy flows in a building. Depending on solar generation and the building's current electricity demand, charging sessions can be controlled even more intelligently in combination with go-e Chargers.

You can also use the go-e Controller simply to monitor loads. For example, you can keep an eye on the energy flows of a heat pump, air-conditioning system or sauna. The go-e Controller supports both single-phase and three-phase operation.

On three-phase grids, you can monitor 3 additional devices (for example a PV inverter, AC battery storage system and heat pump); on single-phase grids, you can monitor up to 5 additional devices.

Optimising self-consumption: PV surplus charging

With the go-e Controller, surplus solar energy can be used to charge electric vehicles via one or more go-e Chargers.

If your PV panels generate more energy than your household appliances currently require, charging your EV increases your self-consumption and lets you make greater use of your own renewable electricity. Neither PV surplus charging nor dynamic load management requires the PV production itself to be measured.

However, direct measurement at the AC connection of the inverter also allows self-consumption to be displayed correctly. No direct communication with the PV system is required.

Battery storage systems can also be taken into account as long as they can be measured at the AC connection. With hybrid inverters that have a DC battery connection, direct measurement of battery power is not possible. You decide whether the vehicle should be charged exclusively with PV surplus electricity or also with grid electricity.

Automatic phase switching***

If your PV system generates at least 1.4 kW of surplus power, the go-e Controller sends this information to the go-e Charger, which then manages the actual charging process using PV surplus electricity.

Depending on the available power, the Controller automatically switches between single-phase and three-phase charging. This enables a high level of self-consumption even when only a small PV surplus is available. As soon as the PV system produces sufficient surplus power, the go-e Controller switches to three-phase charging.

***Available only for HOME Series V3, Gemini, Gemini 2.0 and PRO Series.

Dynamic load management to protect against power outages & for peak shaving

Load management is important when charging electric vehicles in order to prevent the building connection from being overloaded. The go-e Charger already provides static load management, allowing the building's maximum available current to be taken into account when several EVs are charging. However, a safety margin would normally have to be reserved for other electrical loads in the building. This is why the go-e Controller provides dynamic load management.

When many electrical consumers are operating at the same time, the charging power of go-e Chargers connected to the go-e Controller is automatically adjusted as required. As a result, household appliances and charging stations do not draw more power at the same time than the building connection can provide – fully automatically.

Convenient control from the sofa

Set your preferences for solar-energy generation and consumption directly in the app. You can also use the go-e app to access all Controller settings and adapt them to your needs. Whether you are interested in dynamic load management or your building's electricity consumption, you can keep track of it all. Once the Controller is connected via Wi-Fi or LAN, charging your electric vehicle becomes even easier, safer, more cost-effective and more sustainable.

Advanced functions for experts and integrators

Do you have programming skills? The go-e Controller provides additional interfaces such as a local HTTP API, Modbus TCP and MQTT for even greater control over EV charging. With the optional cloud connection, the Controller's functions can be extended further.

Where is the go-e Controller installed?

An electrical distribution board is recommended as the installation location. If there is no space available, the go-e Controller can also be installed in a new surface-mounted or flush-mounted distribution board next to the existing one, with the connection cables for voltage measurement and the current transformers routed to it.

You can download the operating instructions HERE.