Solarman + OCPP chargers

What Zerofy can do with Solarman and OCPP chargers

In practice

• Zerofy adjusts the charging current of your OCPP charger 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.
• Solarman systems range from balcony kits to rooftop systems (0.8–12 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 Solarman 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.
• Many chargers switch off their own app or solar mode while an external OCPP backend is active (for example enercab, Growatt THOR, SolaX in its OCPP scene), so Zerofy takes over. Zerofy sets the power over OCPP but not the phases, so a three-phase charger needs about 4.1 kW of surplus (3×6 A) unless it switches phases by itself.

What Solarman and OCPP chargers offer on their own

Solarman: Solarman has no EV charger and no own surplus-charging function; whether surplus charging is possible depends on the inverter brand behind the logger. Deye’s SUN-EVSE charger, for example, can be monitored and controlled in Solarman when it is paired with a Deye hybrid inverter.

OCPP chargers: OCPP itself has no solar mode: since 1.6 it carries smart-charging profiles, so the backend sets the current limit and decides when to charge. Solar behaviour therefore comes from whichever system is the backend, or from the charger’s own meter-based mode.

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

Setting up Solarman and OCPP chargers in Zerofy

1. Connect Solarman

Zerofy connects to SOLARMAN Smart with your account login and reads PV production, meter (consumption) and battery data of your plant; a Solarman P1 meter reader can also be added as a separate electricity meter.

1. Make sure your logger is online and your plant is set up in SOLARMAN Smart.
2. In Zerofy, add an inverter, choose Solarman and log in with your SOLARMAN Smart e-mail and password.
3. Optional: if the plant has a P1 meter, add it in meter setup under Solarman and select it from the discovered devices.

Good to know: Zerofy finds devices per plant, so a P1 meter must be assigned to a plant in SOLARMAN Smart. If a plant has both an inverter and a P1 meter, Zerofy offers two meters with the same plant-level values; connect only one of them.

Step-by-step guide for Solarman

2. Connect OCPP chargers

You enter Zerofy’s OCPP URL in your charger’s OCPP settings; Zerofy then acts as the backend and can start, stop and set the charging power.

1. Check that your charger supports OCPP 1.6 and lets you change the backend address.
2. In Zerofy, add an OCPP charger and copy the OCPP URL.
3. Paste it into the OCPP settings of your charger’s app or web page and wait for it to connect.

Good to know: Not every OCPP charger lets the owner choose the backend: some need the installer’s service tool (Alfen, ABB), some pick from a preset list (Peblar) or whitelist the address first (Smappee), and some offer no owner OCPP at all (Tesla Wall Connector, Ohme).

Step-by-step guide for OCPP chargers

3. Turn on Autopilot

In Zerofy, open your OCPP 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 OCPP 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 Solarman solar production.

Learn more about Smart Mode

About Solarman and OCPP chargers

Solarman – Solarman (IGEN Tech, Wuxi, China) does not make inverters: it makes data loggers such as the LSW-3 Wi-Fi stick and runs the SOLARMAN Smart platform, which according to IGEN works with about 200 inverter brands, including Deye. If your inverter’s app is SOLARMAN Smart, your data comes through Solarman whatever brand is on the inverter. Monitoring app: SOLARMAN Smart.

OCPP chargers – OCPP (Open Charge Point Protocol) is the open standard from the Open Charge Alliance for communication between a charger and a management system; version 1.6 from 2015 is the most widely used, in its JSON variant 1.6J. A charger can only be connected to one OCPP backend at a time. Products: Any charger with OCPP 1.6J and a freely configurable backend, e.g. Alfen Eve, KEBA KeContact P40, Charge Amps Halo, Autel MaxiCharger, enercab smart.

Manufacturer information last checked: October 2026.

All devices that work with Solarman