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Deye HEMS
Use Zerofy as your Deye HEMS. Monitor solar production, optimize self-consumption, and automatically control EV chargers, heat pumps, and smart plugs.
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Deye HEMS: TL;DR
Zerofy transforms your Deye PV system into a complete Home Energy Management System (HEMS). Monitor production, optimize self-consumption, and control your connected devices – all from one app. No additional hardware required.
About Deye
Deye (Ningbo Deye Inverter Technology, Ningbo, China) is best known for low-voltage hybrid inverters such as the three-phase SUN-5K to SUN-12K-SG04LP3-EU, used with 48 V batteries. It also makes SUN-M60/80/100G4 microinverters (600–1000 W) for balcony and small rooftop systems. Its monitoring app is Deye Cloud.
What is a Home Energy Management System?
A HEMS (Home Energy Management System) helps you get the most out of your solar installation. It monitors your PV production in real-time and automatically steers connected devices like EV chargers, heat pumps, and smart plugs to maximize self-consumption.
With Zerofy as your Deye HEMS, you can:
- Monitor real-time solar production and home consumption
- Optimize self-consumption through intelligent device control
- Save on electricity bills with dynamic tariff integration
- Track your energy independence and CO₂ savings
Key Features
Real-time Monitoring
See live data from your Deye inverter: current production, consumption, grid feed-in, and battery status.
Smart Autopilot
Automatically control EV charging, heat pumps, and appliances based on solar surplus.
Dynamic Tariffs
Integrate electricity spot prices (Tibber, aWATTar, etc.) to optimize for cost savings.
What Deye offers on its own
Before connecting Deye to Zerofy, it helps to know what Deye offers on its own:
- EV charging: Deye’s own SUN-EVSE11K01/22K01-EU-AC charger can be set up in the hybrid inverter’s Smart Devices menu with a “Solar energy only (SOC>95%)” time slot. This needs a Smart TX module on the inverter for the LoRa link, and not every Deye hybrid supports it.
- Heating: Deye hybrids have no SG Ready output. A heating rod or other load can be wired to the GEN port in Smart Load Output mode, but it switches only by battery SOC (e.g. on at 100 %, off below 95 %), not by measured surplus.
- Other loads: The same GEN-port Smart Load switching works for any load up to the port’s rating; with “On Grid always on” the port stays on whenever the inverter is grid-connected.
How It Works
- Connect your Deye system – Zerofy connects to Deye Cloud with your Deye Cloud login and reads PV production, meter (consumption) and battery data.
- Add your devices – Connect your EV, charger, heat pump, or smart plugs
- Enable Autopilot – Let Zerofy automatically optimize for solar self-consumption
- Track your savings – Monitor your energy independence and cost savings
Why Choose Zerofy for Deye HEMS?
| Zerofy HEMS | Hardware-based HEMS | |
|---|---|---|
| Hardware cost | None | €500-1000+ |
| Installation | App download, 5 minutes | Professional electrician |
| Monthly cost | Free or €7/month (Plus) | Varies |
| Device support | 60+ brands | Limited selection |
| Updates | Automatic, free | Manual/paid |
Ready to optimize your Deye solar system?
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