Production — actual vs expected (kWh/day)
Inverters (latest day)
| Inverter | Brand | Size | Performance ratio |
|---|---|---|---|
| Inverter 2 | Huawei | 12 kWp | 55% |
| Inverter 1 | Huawei | 12 kWp | 92% |
| Inverter 3 | Huawei | 12 kWp | 92% |
Anomalies
Panel soiling — Inverter 2 shows a sustained PR of 55% over 7 consecutive days on sunny conditions, while peer inverters achieve 92% on the same day and under the same clear sky. This persistent 37-point gap despite clear weather and stable performance across time points is characteristic of soiling accumulation rather than a sudden electrical fault.
Action: Schedule a panel cleaning inspection for Inverter 2's array; prioritize checking for dust, bird droppings, pollen, or other deposits that typically accumulate during dry periods. · confidence: high
Panel soiling — Inverter 2 has consistently underperformed at 55% PR for seven consecutive days while peers (Inverters 1 and 3) achieved 92% PR today under identical clear, sunny conditions. The sustained, flat depression—not a sudden drop—indicates accumulated dirt, dust, or debris on the panels rather than an electrical failure.
Action: Schedule a physical site visit to inspect and clean the panels on Inverter 2's string(s); verify no damage or shading obstruction during inspection. · confidence: high