An Under-Performance message appears when the solar system is generating less energy than is expected. An under-performance alert can be caused by either an actual issue regarding your solar system or a monitoring set-up error which leads to a false diagnosis.
Some common issues that will cause a false under-performance diagnosis are:
- Incorrect solar system details entered on the dashboard
- Incorrect labelling of circuits
- Incorrect device wiring
Possible solar systems issues that could cause an Under-Performance alert are:
- Actual solar system fault (e.g. Inverter or Panel fault)
- Over-voltage (i.e here for more information)
- Shading or Seasonal change (i.e. Autumn & Winter shading)
- System design faults
- Dirty panels (typically not the cause)
The easiest issues to check for are the above listed issues which cause a false under-performance diagnosis. In order to ensure that your under-performance is related to your solar system and not the monitoring set-up, please check the following information on the dashboard:
Customer Site Page
- Inverter/s. Check that the number of inverters and their ratings are correct;
- Subarray/s. Check that each subarrays rating, orientation and tilt is accurate. Each inverter must have its panel details inputted individually;
- Hardware configuration (require your installer assistance). Check the channel labelling (and enabling) in hardware configuration. This may need to be reconfigured by Solar Analytics.
Other causes of performance issues to consider:
- Time. Our algorithm requires at least 24 hours of data to calculate an accurate performance value.
- Outliers. In the event that there is only one day of under-performance sandwiched between consistently well-performing days the cause it most likely a discrepancy between the weather data received from The Bureau of Meteorology and the true weather conditions and can be disregarded.
If the above factors do not explain why your site is under-performing please drop us an email by clicking on 'contact us' below.