Best Solar Irradiance Meters: 8 Accurate Picks for Professional Solar Testing
Eight instruments that read sunlight in watts per square metre, from pocket meters with a stated accuracy figure to survey tools adding tilt and temperature.
Read Guide→Irradiance Meters
Solar testers, PV meters, battery monitors and more.
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Buying Guides
Solar Irradiance Meters With Temperature Probes: Three Picks Compared
A comparison of three solar irradiance meters that pair a light sensor with temperature measurement, and one weather station that is not an irradiance meter at all.
Read Guide→Wireless Solar Irradiance Meters: Four Picks for PV Site Assessment
Four solar irradiance meters compared on sensor, range, logging and temperature, with guidance on when wireless data transfer actually helps.
Read Guide→How to Choose a Solar Irradiance Meter
A silicon sensor that sees what panels see, a range past 1,200 W/m², a level and a tilt reading, and a cosine-corrected head.
Read Guide→Product Reviews
Seaward Solar Survey 200R Review: Irradiance Measurement for PV Surveys
A solar survey meter measuring irradiance to IEC 62446 with a built-in compass, inclinometer and two temperature channels, plus data logging on the 200R.
Read Review→Learning Center
Solar Irradiance vs Solar Panel Output
Output follows irradiance almost linearly, then temperature, soiling and wiring take their cut.
Read Article→What Is Solar Irradiance?
The power of sunlight arriving on a surface, in watts per square meter. The input side of every solar calculation.
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