SolarEdge + Daikin

What Zerofy can do with SolarEdge and Daikin

In practice

• Hot water is the simplest heat store: Autopilot can raise the hot-water temperature of your Daikin heat pump in hours with surplus.
• Zerofy can also change the room temperature and flow temperature of your Daikin heat pump, so space heating can shift into sunny hours.
• A heat pump draws roughly 1–3 kW while running, which a typical SolarEdge home system (3–10 kW) can cover on sunny days.
• Zerofy gets new SolarEdge data every 5 minutes. Heat pumps shouldn’t switch often, so set a minimum runtime in Autopilot.
• Zerofy also shows your SolarEdge battery, so you can see whether surplus goes into the battery or into the heat pump.
• Check how your installer set up the flow temperature: with a weather-dependent curve, Onecta only allows shifting the curve with an offset, not setting a fixed leaving-water temperature. Raising the hot-water setpoint during surplus is usually the simplest way to store solar heat.

What SolarEdge and Daikin offer on their own

SolarEdge: The SolarEdge Home Load Controller switches the SG Ready input of most air-to-water heat pumps on excess solar, with two configurable set points; it connects to the inverter via the SolarEdge Home Network and needs no ONE Controller. Vaillant heat pumps from 2018 with EEBUS can be controlled through the ONE Controller, and the SolarEdge Home Hot Water Controller feeds surplus into an immersion heater.

Daikin: Altherma units have Smart Grid inputs driven by an inverter or energy manager: in “Recommended ON” the heat pump buffers PV power in the hot-water tank (optionally also in the rooms) and limits its power consumption, statically or dynamically from a pulse meter at the grid connection. With the BRP069A61 LAN adapter the meter must measure the net feed-in at a single grid connection point.

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

Setting up SolarEdge and Daikin in Zerofy

1. Connect SolarEdge

Zerofy connects to SolarEdge’s monitoring cloud with the same login you use for the SolarEdge Monitoring website or the mySolarEdge app.

1. Make sure your SolarEdge inverter is online and your account has the Owner role on the site.
2. Add a new SolarEdge device in Zerofy.
3. Log in with your SolarEdge Monitoring / mySolarEdge credentials and follow the on-screen prompts.

Good to know: Your account needs the Owner role, which the installer usually assigns to the system owner during setup; ask your installer if you don’t have it. Battery and meter data depend on how your system is configured.

Step-by-step guide for SolarEdge

2. Connect Daikin

Zerofy connects to the Daikin Onecta cloud with your Onecta login and can set room temperature, leaving-water (flow) temperature and hot-water temperature; Autopilot runs it on solar surplus or low prices.

1. Register the heat pump or air conditioner in the Daikin Onecta app and check it is online.
2. In Zerofy, add Daikin and log in with your Onecta credentials.
3. Enable Autopilot (Solar or Smart mode) for the device.

Step-by-step guide for Daikin

3. Turn on Autopilot

In Zerofy, open your Daikin 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 Daikin 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 SolarEdge solar production.

Learn more about Smart Mode

About SolarEdge and Daikin

SolarEdge – Israeli company (Herzliya) known for inverters with a power optimizer on every module. Homes typically have a SolarEdge Home Wave single-phase or Home Hub three-phase inverter with optimizers, often with a SolarEdge Home Battery and SolarEdge Home smart-energy accessories. Monitoring app: SolarEdge Monitoring / mySolarEdge app.

Daikin – Daikin is a Japanese air-conditioning and heat pump maker with its European headquarters in Belgium. Homeowners typically have an Altherma 3 air-to-water heat pump or Daikin split air conditioners, both connected through the Daikin Onecta app. Products: Altherma 3 R, Altherma 3 H HT, Altherma 3 M, Altherma 3 GEO, split air conditioners in the Onecta app.

Manufacturer information last checked: October 2026.

All devices that work with SolarEdge