AH-SOL is a handheld solar irradiance meter for PV installation checks, field comparisons, research and environmental monitoring. Take a direct W/m² reading, freeze it with Data Hold, and store up to 99 measurements for later comparison.
This distinction matters. The meter tells you how much solar radiation reaches the measurement point in W/m², which is useful when you want to compare sunlight conditions, positions, modules or site conditions.
AH-SOL reads solar irradiance in W/m². It does not directly measure a PV module’s electrical watts, voltage, current or energy production. Those require electrical test instruments.
Keep measurement position and sensor orientation consistent whenever you compare readings.
Place the sensor at the location and orientation you want to evaluate, then read solar irradiance directly in W/m².
Use Data Hold when you need to freeze the displayed value. Store readings when you want to compare multiple points later.
Compare locations, modules, shading conditions or measurement times using a consistent position and orientation.
AH-SOL is most useful when you need a direct irradiance value and a repeatable way to compare conditions.
Document irradiance present during commissioning, inspections or comparative site measurements.
Record sunlight conditions when irradiance is one of the variables in an outdoor or laboratory workflow.
Compare solar exposure across positions, times or outdoor locations using direct W/m² measurements.
Core specifications shown on this page are based on the current AH-SOL product information.
These answers clarify what the meter measures and when it is the right tool.
AH-SOL measures solar irradiance at the sensor location and displays the result in W/m².
No. It measures incident solar irradiance, not panel voltage, current, electrical watts or energy production.
No app is required for its primary measurement workflow. Read the W/m² value directly on the meter and use Data Hold or stored readings as needed.
AH-SOL can store up to 99 readings for quick field comparisons and later review.
No. It can also be used in research and environmental monitoring whenever a direct solar irradiance measurement is useful.
Irradiance can change with time, clouds, shading, sensor position and orientation. Keep the measurement method consistent when comparing readings.
View the current AH-SOL Solar Meter instruction manual in PDF format.
Review current availability, delivery and purchase information for AH-SOL on the retailer page.