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Live Data from Solar Test Site

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Power Production For All Modules

This graph shows the current amount of power in watts that is being produced by each solar panel at the UAF Solar Test Site. Each trace represents the power production of one of the six panels. These data are being collected to compare power production between differently oriented panels (South-facing, West-facing, and East-facing) in addition to bifacial versus monofacial panels. As opposed to monofacial panels, bifacial panels absorb and convert sunlight on two sides. The Solar Test Site has two South-facing monofacial panels, two South-facing bifacial panels, one East-facing vertical bifacial panel, and one West-facing vertical bifacial panel. Please note that panel power production data are collected on a seconds time scale which may result in increased uploading times.

Direct Normal, Diffuse Horizontal, and Global Horizontal Irradiance

This graph shows, in real time, the three critical measurements of solar irradiance: Global Horizontal Irradiance (GHI), Diffuse Horizontal Irradiance (DHI), and Direct Normal Irradiance (DNI). Irradiance is a measurement of how much power the sun is emitting over a specific area, which is useful when evaluating the efficiency of different solar panels at different orientations. The most common irradiance measurement is GHI, which is a measurement of the total irradiance on a horizontal surface. DHI is a measurement of the non-direct (i.e., diffuse or scattered) irradiance on a horizontal surface. DNI is a measurement of the irradiance component perpendicular to a surface. These irradiance data are being collected on an hourly scale, which influences the overall graph shape.


This graph shows the current albedo of the ground. Albedo is an indicator of how much light is reflected from a surface without being absorbed. Albedo ranges from 0 to 1. For example, snow has a very high albedo (close to 1). Surfaces with high albedos can affect the outputs of different panels by reflecting additional sunlight back onto panels. This albedo data is being collected on an hourly scale which contributes to the overall graph shape.

*Please note that the displayed data are raw and are useful for providing informative snapshots but should not be used for detailed analysis. The data are subject to environmental factors like snow, soiling, vegetation, etc. Please contact the Solar Technologies Program researchers for access to and use of cleaned data.*

Ambient Temperatures

Wind Speed