Solax Inverter API Proxy Server

Reads realtime data from the Solax inverter (using local API, not cloud).

Works with Solax X3-Hybrid-G4 inverter.

Install

npm i

Configuration

Create .env file with following options:

SOLAX_URL=
SOLAX_PASSWORD=
SERVER_PORT=

E.g.

SOLAX_URL=http://192.168.1.123/
SOLAX_PASSWORD=123456
SERVER_PORT=8080

Run

npm run start

or in the development mode

npm run dev

Open in browser: http://localhost:8080/solax-api/

Response example

{
    "pvPower": 754,
    "acPower": 741,
    "string1Voltage": 420.3,
    "string2Voltage": 280,
    "string1Current": 0.9,
    "string2Current": 1.2,
    "string1Power": 416,
    "string2Power": 338,
    "batterySoc": 0,
    "gridPower": -5541,
    "batteryVoltage": 0,
    "batteryCurrent": 0,
    "batteryPower": 0,
    "batteryRemainingEnergy": 6.9,
    "loadPower": 6282,
    "todayFeedInEnergy": 0.1,
    "totalFeedInEnergy": 15.1,
    "todayBatteryDischargeEnergy": 3.1,
    "todayBatteryChargeEnergy": 0.1,
    "totalBatteryDischargeEnergy": 240.5,
    "totalBatteryChargeEnergy": 263.1,
    "todayConsumption": 12.9,
    "totalConsumption": 1355.12,
    "batteryTemperature": 0,
    "totalYield": 501.4,
    "todayYield": 4.8,
    "outputCurrentPhase1": 1.4,
    "outputCurrentPhase2": 1.4,
    "outputCurrentPhase3": 1.4,
    "powerPhase1": 233,
    "powerPhase2": 260,
    "powerPhase3": 248
}

Create a Linux service

You can create a Linux service to run the proxy server on startup.

1. Create a file /lib/systemd/system/solax-api-proxy.service with following content (just change the path to the run script):

[Unit]
Description=Solax Inverter API Proxy
After=network-online.target

[Service]
ExecStart=/bin/bash /home/pi/solax-inverter-api-proxy/run.sh
WorkingDirectory=/home/pi/solax-inverter-api-proxy
StandardOutput=inherit
StandardError=inherit
Restart=always
User=root

[Install]
WantedBy=multi-user.target

2. Start the service:

sudo systemctl start solax-api-proxy.service

3. Check the service status:

sudo systemctl status solax-api-proxy.service

4. Enable the service (to run on startup):

sudo systemctl enable solax-api-proxy.service