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Topic starter
July 31, 2025 2:48 pm
Though monitoring EG4 inverters/system can be done by attaching directly through the wifi dongle (or the cloud), the ability to view the system through a local network would be very helpful. For example, I can attach directly to my 18Kpv inverter through the wifi dongle, but my dongle is 100 yards away from my house. It is connected to my local wifi network, but I cannot access it through my local network, but only through the cloud or directly to the dongle.
For those who are off-grid, with no internet access, or would like to monitor their EG4 system when the internet is down, the ability to monitor the EG4 system through a local network would be very helpful.
Topic starter
July 31, 2025 11:20 pm
@eg4eric, my solar shed is not within WiFi range of my home, but I have a well-distributed network around my property.
August 3, 2025 3:17 pm
Depending on your skill set there is an option which combines 2 open source projects. To get data from your EG4 inverter( 18kPV and 6000 supported ) there's Python Protocol Gateway( https://github.com/HotNoob/PythonProtocolGateway ) which I run on a Raspberry Pi and connect to the EG4 18kPV via RS485->USB cable.
It acquires data from the inverter and publishes it to a MQTT server( which can also be running on the Raspberry Pi. For display I use MQTT Explorer.
For a better looking display than a bunch of MQTT messages the next open source package is Home Assistant( https://www.home-assistant.io/ ) which can also run on the Raspberry Pi.
It can do far more than display solar inverter data for example I have a 3rd open source package in my solar system setup which is YAMBMS( https://github.com/Sleeper85/esphome-yambms ) which sits on an ESP32 between my batteries and the inverter and allows me more control of information and charge/discharge and many use it to read from a Smart Shunt for more accurate SOC information and provide that to the inverter instead of what the batteries think is their SOC. I have a CAN interface from the ESP32 to the EG4 18kPV inverter and another one to the DIY Basengreen batteries(3*16kWh).
Here's one of my 4 solar system display panels seen in a web browser.
Unfortunately, while Home Assistant sells a kit to get going, the YAMBMS doesn't but Python Protocol Gateway is, like Home Assistant pretty much a software only solution for inverter data collection and display. They are Linux solutions and as you mentioned, they are local LAN based so no Internet connection is required and no data is lost if there's a cloud issue or Internet disconnection.
Lance reacted
August 3, 2025 7:20 pm
Hello @lance,
I too had a "long way from the wifi" situation. I was able to resolve my problem using a wifi extender and a poe++ extender. Between the two I now have 4 bar reception wifi approx 450 feet from the front door of my shed.
For some reason the Amazon URL would not resolve so I put the pictures in so you could get the names and look them up if you need them.
PoE Texas PoE++ Extender - Outdoor PoE Repeater - IP67 Waterproof and Direct Burial Capable - High-Speed Ethernet Booster Extends Power and Gigabit Data Range by 100m - IEEE 802.3bt/at/af Compliant
I have had very good performance from both and setup was a no-brainer.
Hope this helps. Good Luck!
Lance reacted
