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Deye Modbus (Hybrid Inverter)

Local Home Assistant integration for Deye three-phase hybrid inverters — SUN-*K-SG04LP3 / SG05LP3 family, including the SUN-12K-SG05LP3. It polls the inverter over Modbus TCP directly, either through the Deye WiFi/LAN logger (default port 8899) or an RS485-to-TCP gateway (port 502). No cloud, no SolarMAN account.

What you get

  • 100% local polling — nothing leaves your network.
  • Sensors: PV strings, battery (SOC/power/temperature), grid import/export, per-phase grid/inverter/load, temperatures, plus daily and lifetime energy counters for the Energy dashboard.
  • Controls: work mode, solar sell, grid/generator charge, battery current & SOC limits, max sell power, and 6-slot time-of-use programming.
  • Guided config flow (pick model → host/port/unit ID/scan interval) and an options flow for transport, address offset and serial params.
  • Services: write_register, write_registers, write_u32 for advanced access.

Some entities (PV3/PV4, per-phase detail, TOU slots) ship disabled by default — enable them in the entity settings.

Supported models

  • Deye SUN-12K-SG05LP3 (3-phase hybrid)
  • Deye SUN-5/6/8/10/12K-SG05LP3 (3-phase hybrid)
  • Deye SUN-5/6/8/10/12K-SG04LP3 (3-phase hybrid)

Quick start

  1. Install via HACS, then restart Home Assistant.
  2. Settings ▸ Devices & Services ▸ Add Integration → "Deye Modbus".
  3. Pick your model and enter the logger IP (e.g. 192.168.x.x), port (8899 for the Deye logger, 502 for an RS485↔TCP gateway), Modbus unit ID (1) and scan interval.

Note: the inverter accepts only one Modbus connection at a time, so this conflicts with SolarMAN cloud logging and other Modbus pollers.

See the README for the full entity list, options, services and troubleshooting.