All incidents
Medium88%High confidenceNot activeUnderperformanceINC-0996
String underperformance on Ring1 Inverter 3
Output was 18% below comparable inverters between 8 and 21 February. A disconnected string was found and repaired.
Apollo2_New · Ring1_Inverter3 · Started 08 Feb 2025, 08:10
Estimated energy loss
1,145kWh
Estimated financial loss
€126
Current loss rate
Not active
Duration
13 days
Recommended action
Replace the failed connector
Why SOL detected this
- Output was 18% below the Apollo peer median during daylight.
- One MPPT input showed near zero current while the others were normal.
- The pattern started abruptly on 8 February.
Most likely cause
Open circuit on one string caused by a failed connector.
Other possible causes
- Failed DC connector
- Blown string fuse
- Module failure
Recommended inspection
These steps become the technician checklist
- 1Replace the failed connector
- 2Verify string current after repair
Actual against expected power
Peer comparison for a representative day
Expected against actual power
Units: kW by time of day
What to notice: The dashed line is what comparable inverters produced at the same time. The shaded area is the actual output.