Sungrow + Nibe

What Zerofy can do with Sungrow and Nibe

In practice

• Hot water is the simplest heat store: Autopilot can use the hot-water boost of your Nibe heat pump to heat water in hours with surplus.
• A heat pump draws roughly 1–3 kW while running, which a typical Sungrow home system (3–10 kW) can cover on sunny days.
• Zerofy gets new Sungrow data every 5 minutes. Heat pumps shouldn’t switch often, so set a minimum runtime in Autopilot.
• Zerofy also shows your Sungrow battery, so you can see whether surplus goes into the battery or into the heat pump.
• Leave the normal hot-water comfort mode at a moderate level so the tank has headroom; a boost triggered on surplus then stores midday solar as hot water for the evening. EME 20 is not needed for this, since Zerofy reads the surplus from your inverter’s cloud.

What Sungrow and Nibe offer on their own

Sungrow: SH-RT inverters have a DO relay that the iSolarCloud app can switch on export (Intelligent Mode: on once export reaches a set power, for at least 20 minutes), for example for an SG Ready heat pump via a contactor. The iHomeManager also has a DO port for heat pump control.

Nibe: NIBE’s own PV solution is the EME 20 communication module for S-series units (S1155, S1255, SMO S40, VVM S320/S325). It reads the inverter over RS485 Modbus RTU (SunSpec) and, under menu 4.2.2 “Solar electricity”, lets the heat pump raise room, hot-water or pool temperature when there is surplus; with an extra energy meter household consumption can be prioritised.

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

Setting up Sungrow and Nibe in Zerofy

1. Connect Sungrow

Zerofy connects to your Sungrow system through the iSolarCloud cloud, using your iSolarCloud login.

1. Make sure your Sungrow inverter is online and registered in iSolarCloud.
2. Add Sungrow in Zerofy and log in with your iSolarCloud credentials.

Step-by-step guide for Sungrow

2. Connect Nibe

Zerofy connects to the myUplink cloud API with your myUplink login (OAuth) and shows the heat pump as a Space Heating and a Hot Water Tank device; Autopilot controls the hot-water boost.

1. Register the heat pump in myUplink and make sure it is online.
2. Activate a myUplink Premium subscription for the system.
3. In Zerofy, add Nibe and log in with your myUplink credentials.
4. Enable Autopilot (Solar or Smart mode) for the Hot Water Tank.

Good to know: Without a myUplink Premium subscription the API access does not work. Zerofy currently steers only the hot-water boost; flow-temperature control is not available yet.

Step-by-step guide for Nibe

3. Turn on Autopilot

In Zerofy, open your Nibe heat pump, 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 Nibe heat pump 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 Sungrow solar production.

Learn more about Smart Mode

About Sungrow and Nibe

Sungrow – Chinese inverter and storage maker based in Hefei. Homes typically have an SH-RS single-phase hybrid inverter (3–6 kW) or an SH-RT three-phase hybrid inverter (5–10 kW) with the SBR battery (6.4–25.6 kWh, 3.2 kWh modules), connected to the cloud through a WiNet-S/S2 dongle. Monitoring app: Sungrow iSolarCloud.

Nibe – NIBE is a Swedish heat pump maker (Markaryd). Homeowners typically have a ground-source S1155/S1255, an air-to-water heat pump with an SMO or VVM indoor unit, or an exhaust-air F730/F750, all connected to the myUplink cloud. Products: S1155, S1255, S2125 with SMO S40 / VVM S320, F-series (F1155, F1255, F2120, F730, F750).

Manufacturer information last checked: October 2026.

All devices that work with Sungrow