A “solar smart sensor” usually means a field device that measures PV performance drivers (irradiance, module/ambient temperature, wind) and/or loss mechanisms (especially soiling) and streams that data into your monitoring stack for alerts and performance ratio analysis. The 3 smart-sensor categories that matter Environmental sensors: irradiance temperature ( wind) to explain power swings and compute site performance ratio. ​ Soiling sensors: measure a soiling ratio / soiling-loss index so you k