Soiling intelligence
What the soiling ratio means, how per-inverter estimation works, and how the cleaning optimizer uses it.
The soiling ratio (SR) is the fraction of expected energy your modules deliver given the dirt on them: SR 0.95 means 5 percent of production is lost to soiling. NuraVolt estimates SR per inverter from AC power, irradiance and temperature after weather and curtailment correction, forecasts it 365 days ahead, and recommends cleaning dates where the recovered energy pays for the clean.
Soiling ratio, in plain terms
Dust, pollen and salt settle on modules and block light. The soiling ratio compares what your plant actually produces against what it should produce with clean modules under the same weather. A plant at SR 0.92 is losing 8 percent of its energy to dirt.
Most plants carry at most one reference sensor, so NuraVolt infers soiling per inverter from operational data instead. Uneven soiling is normal: rows near a road or field edge foul faster, and per-inverter estimates make that visible.
Forecast and cleaning optimizer
- A 365-day SR forecast per plant, with confidence bounds and rain-recovery effects from weather forecasts.
- Cleaning recommendations that weigh the cost of a clean against the energy it recovers at your tariff.
- A schedule you can approve as O&M tickets, so the recommendation becomes a work order.
Frequently asked questions
See also
See this on your own plants
NuraVolt turns your SCADA and BMS data into early fault detection, degradation-aware BESS analytics, and audit-ready reporting. A fixed-scope audit shows you what we’d find on your portfolio.