Quick Answer
Utilize satellite images with high resolution (at least 30cm) and a clear view of your site to assess shading, taking note of nearby structures, vegetation, and terrain features that may cast shadows on your solar panels.
Satellite Image Requirements
To assess shading using satellite images, you will need high-resolution imagery with a minimum resolution of 30cm (0.3m) and a clear view of your site. Popular sources for such images include satellite data providers like Planet Labs, DigitalGlobe, and Maxar Technologies. When selecting satellite images, look for those taken during the time of year and at the time of day when the sun is most likely to be shining on your solar array.
Assessing Shading on Satellite Images
To assess shading on satellite images, use a combination of visual inspection and digital tools to identify potential shading sources. Start by zooming in on your site to see if there are any nearby structures, such as trees, buildings, or hills, that may cast shadows on your solar panels. Use the satellite image’s shadow analysis tools or manually draw a rectangle around your solar array to identify the area where shadows may fall. Note the time of day and season when shadows are most likely to occur.
Analyzing and Visualizing Shading
To better understand the extent of shading on your site, analyze the satellite images using specialized software or online platforms, such as Google Earth or ESRI ArcGIS. These tools allow you to create custom overlays, draw shapes, and measure distances to further assess the impact of shading on your solar panel performance. Additionally, some satellite data providers offer 3D modeling capabilities, which can help you visualize the terrain and potential shading sources in greater detail.
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