EG4 Web Monitor
Complete Home Assistant integration for EG4 solar inverters, batteries, and GridBOSS systems
EG4 Electronics is a leading manufacturer of residential and commercial solar energy equipment. Their product line includes high-performance solar inverters (FlexBOSS series, 18KPV, 12KPV, XP series), advanced battery storage systems with integrated Battery Management Systems (BMS), and GridBOSS microgrid interconnection devices that enable seamless integration with utility power.
Integration Features
Monitor and control your complete solar energy system from Home Assistant.
Real-time Monitoring
Track power generation, battery state of charge, grid usage, voltage, current, temperature, and energy production in real-time
Device Control
Control operating modes, enable quick battery charging, activate battery backup (EPS) mode, and configure charge limits
Multi-Device Support
Manage multiple solar installations, inverters, batteries, and GridBOSS devices from a single account
Available Sensors & Controls
Real-time visibility into every aspect of your solar, battery, and grid power.
Inverter Sensors
- AC power output
- Battery charge/discharge power
- State of charge (SOC)
- Daily energy generation
- Grid frequency & voltage
Battery Sensors
- State of charge percentage
- Individual cell voltages
- Battery temperature
- Charge/discharge current
GridBOSS Sensors
- Grid power import/export
- Load power consumption
- Smart port status
- Operating mode
Control Entities
- Quick charge switch
- Battery backup (EPS) switch
- Operating mode selection
- Charge limit configuration
Advanced Home Assistant Automations
Without this integration, systems operate in isolation with only basic scheduled behaviors. Home Assistant integration unlocks sophisticated automation capabilities:
Dynamic Time-of-Use Optimization
Automatically adjust battery charge/discharge behavior based on utility rate schedules. Charge batteries during off-peak hours and discharge during peak pricing periods to maximize savings.
Example: "When electricity rates enter peak period (4pm-9pm), discharge battery to power home and avoid grid usage. When rates drop to off-peak (midnight-6am), switch to quick charge mode to fully charge batteries."
Weather-Aware Energy Management
Integrate with weather forecasts to preemptively adjust energy storage strategy. Prepare for cloudy days by maintaining higher battery reserve, or allow deeper discharge when sunny weather is forecasted.
Example: "If tomorrow's forecast shows low solar production, maintain battery SOC above 80% tonight. If next week shows consistent sun, allow battery to discharge to 20% to maximize solar utilization."
Intelligent Load Management
Coordinate high-power appliances with solar production and battery status. Automatically delay or trigger energy-intensive tasks based on available renewable energy and battery capacity.
Example: "Start EV charging when solar production exceeds 3kW and battery is above 50%. Pause pool pump if battery drops below 30% and grid power is expensive. Run dishwasher and laundry during peak solar production hours."
Grid Outage Response
Automatically activate battery backup mode during grid outages and send notifications. Prioritize critical loads and manage power consumption to extend battery runtime.
Example: "When grid power lost, activate EPS mode, send push notification, turn off non-essential loads (pool, HVAC), adjust thermostat to conserve battery, and calculate estimated backup runtime based on current load."
Installation & Support
Home Assistant (HACS)
Recommended for usersInstall directly from HACS (Home Assistant Community Store). This is the easiest method and provides automatic update notifications.
Opens My Home Assistant to add the repository directly
Manual Installation
Python Library
For developersFor developers building custom integrations or scripts, the underlying Python library is available on PyPI.
pip install pylxpwebRequirements
- Home Assistant 2025.11.0 or newer
- Active EG4 Monitor account (https://monitor.eg4electronics.com)
- EG4 inverter, battery, or GridBOSS device connected to EG4 Monitor
Source Code
View the source code, report issues, or contribute to the project on GitHub.
View on GitHubOpen Source & Community Driven
This integration is an unofficial, open-source project developed by the Home Assistant community. It is not affiliated with or endorsed by EG4 Electronics. The integration is actively maintained with regular updates to support new EG4 products and features. Community contributions and feature requests are welcome on GitHub.