Fronius Symo monitoring with Netdata

Collects metrics from the configured solar power installation from Fronius Symo.

Requirements

• Configuration file fronius.conf in the node.d Netdata config dir (default: /etc/netdata/node.d/fronius.conf)
• Fronius Symo with network access (http)

It produces per server:

1. Power

• Current power input from the grid (positive values), output to the grid (negative values), in W
• Current power input from the solar panels, in W
• Current power stored in the accumulator (if present), in W (in theory, untested)

2. Consumption

• Local consumption in W

3. Autonomy

• Relative autonomy in %. 100 % autonomy means that the solar panels are delivering more power than it is needed by local consumption.
• Relative self consumption in %. The lower the better

4. Energy

• The energy produced during the current day, in kWh
• The energy produced during the current year, in kWh

5. Inverter

• The current power output from the connected inverters, in W, one dimension per inverter. At least one is always present.

configuration

Sample:

{

"enable_autodetect": false,

"update_every": 5,

"servers": [

{

"name": "Symo",

"hostname": "symo.ip.or.dns",

"update_every": 5,

"api_path": "/solar_api/v1/GetPowerFlowRealtimeData.fcgi"

}

]

}

If no configuration is given, the module will be disabled. Each update_every is optional, the default is 5.

---

Fronius Symo 8.2

The plugin has been tested with a single inverter, namely Fronius Symo 8.2-3-M:

• Datalogger version: 240.162630
• Software version: 3.7.4-6
• Hardware version: 2.4D

Other products and versions may work, but without any guarantees.

Example Netdata configuration for node.d/fronius.conf. Copy this section to fronius.conf and change name/ip. The module supports any number of servers. Sometimes there is a lag when collecting every 3 seconds, so 5 should be okay too. You can modify this per server.

{

"enable_autodetect": false,

"update_every": 5,

"servers": [

{

"name": "solar",

"hostname": "symo.ip.or.dns",

"update_every": 5,

"api_path": "/solar_api/v1/GetPowerFlowRealtimeData.fcgi"

}

]

}

The output of /solar_api/v1/GetPowerFlowRealtimeData.fcgi looks like this:

{

"Head" : {

"RequestArguments" : {},

"Status" : {

"Code" : 0,

"Reason" : "",

"UserMessage" : ""

},

"Timestamp" : "2017-07-05T12:35:12+02:00"

},

"Body" : {

"Data" : {

"Site" : {

"Mode" : "meter",

"P_Grid" : -6834.549847,

"P_Load" : -1271.450153,

"P_Akku" : null,

"P_PV" : 8106,

"rel_SelfConsumption" : 15.685297,

"rel_Autonomy" : 100,

"E_Day" : 35020,

"E_Year" : 5826076,

"E_Total" : 14788870,

"Meter_Location" : "grid"

},

"Inverters" : {

"1" : {

"DT" : 123,

"P" : 8106,

"E_Day" : 35020,

"E_Year" : 5826076,

"E_Total" : 14788870

}

}

}

}

}