Solar Time, Angles, and Irradiance Calculator: User Manual

panel azimuth and tilt angles and the reflectance of the ground surface. Similar to solar azimuth, the azimuth angle of the panel is its +/- angle relative to true south (0°). Tilt angle is the angle the panel is tilted from flat. Finally, the reflectance of the ground surrounding the solar panels must be taken into account because sunlight ................
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