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Welcome to the PowerSync wiki. This is the detailed reference for setting up and configuring PowerSync.
| System | Connection |
|---|---|
| Tesla Powerwall | PowerSync.cc, Fleet API, or Teslemetry |
| Sigenergy | Cloud API + local Modbus TCP |
| Sungrow SH-series | Local Modbus TCP |
| FoxESS (H1, H3, H3-Pro, H3 Smart, KH + OEM rebrands) | Modbus TCP or RS485 |
| GoodWe hybrid (ET/EH/BT/BH/ES/EM/BP) | UDP or TCP (local), or Modbus TCP gateway via EMS mode |
| AlphaESS (SMILE/Storion) | Local Modbus TCP + optional Cloud API |
| ESY Sunhome (HM series) | Via ESY Sunhome companion integration (HACS) |
| Solax Hybrid (X1/X3 Gen4–Gen6, AC Retro-Fit) | Via Solax Modbus companion integration (HACS) |
| SAJ H2 / HS2 | Via SAJ H2 Modbus companion integration (HACS) |
| Fronius Reserva | Via Fronius Modbus companion integration (HACS) |
| Neovolt / Bytewatt | Via Neovolt Modbus companion integration (HACS) |
| SolarEdge Home Battery / inverter curtailment | SolarEdge HA entities for telemetry and battery dispatch; local Modbus TCP or SolarEdge Modbus entity fallback for curtailment |
| Custom / external controller | Existing Home Assistant entities for battery SOC, battery power, grid power, solar power, and home load |
See Battery System Setup for connection guides and capability details.
PowerSync exposes Home Assistant services for force charge/discharge, Hold SOC, backup reserve, Tesla off-grid/reconnect, AC inverter curtailment, and battery-health sync. It also creates control entities for common actions, including duration selectors, power targets, optimizer enable/disable, monitoring mode, auto-update, Away Mode, Profit Max mode, spread import/export controls, Tesla grid charging/export controls, and Powerwall local pairing/off-grid controls where supported.
The mobile app also includes PowerSync automation actions for optimizer toggles, AEMO spike handling, EV charging, and grid-status workflows.
Remote monitoring and control via iOS and Android.
iOS: Join TestFlight | Android: Google Play
New to PowerSync? Try Demo Mode in the mobile app to explore the interface with simulated data — no Home Assistant connection required.
PowerSync is licensed under the PolyForm Noncommercial 1.0.0 license. You are free to use, modify, and distribute the software for any noncommercial purpose. Commercial use requires separate permission from the author.
- Discord: https://discord.gg/eaWDWxEWE3 — bug reports, feature requests, and support