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Survey Solar is the first automated assessment tool for measuring the solar photovoltaic potential of any building structure. Unlike existing labor intensive methods using aerial imaging, it quickly processes photo images to detect, isolate, measure and analyze individual building structures without manual intervention. Using oblique images (viewed at an angle) as opposed to orthogonal (viewed top down), it's possible to measure the circumference, area, individual roof sections, their pitch and composition, with a high degree of accuracy. Aerial imaging, as provided by firms like Google, are imprecise for precise measurements and do not offer correct color calibration. In some cases satellite images are "false colorized", preventing accuracy in the pitch and composition of a roof surface. Instead, oblique images, such as provided by Pictometry, are more accurate, with higher resolution, and with color corrected data providing true values for hue, saturation and intensity (HSI), necessary in analyzing a roof for its solar potential. Accuracy - In side by side studies comparing onsite physical inspection, the results showed Survey Solar as being 98 percent accurate in calculating roof areas and 99 percent in estimating solar KWh capacity. After hundreds of measurements of commercial, residential and municipal buildings, Survey Solar has reduced the time for analysis from days to minutes without sacrificing detail, at an incredibly low cost. In comparison, one vendor was paid $1 million by the DOE to map a large metropolitan county for solar potential of its buildings. The study covered roughly 75,000 buildings and provided no solar assessment. Survey Solar was able to provide both the imaging and solar analysis at less than $1 per building. Typical solar onsite inspection visits can cost between $75 - $150 to an installer. This tool reduces that cost by ten or more orders of magnitude, providing equivalent area measurements with the same precision. Survey Solar is a critical component in assessing the solar potential of school buildings for campuses consisting of multiple structures, each with different roof geometries. By automating the imaging analysis, School Powers can create a detail and exhaustive pro forma analysis of the solar potential for any school in a very short time frame. For more on the science of roof analysis using aerial imaging, click here |