Papers › Roof Age Determination for the Automated Site-Selection of Rooftop Solar
Roof Age Determination for the Automated Site-Selection of Rooftop Solar
Chris Heinrich, Michael Laskin, Simas Glinskis, Evert van Nieuwenburg
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Rooftop solar is one of the most promising tools for drawing down greenhouse gas (GHG) emissions and is cost-competitive with fossil fuels in many areas of the world today. One of the most important criteria for determining the suitability of a building for rooftop solar is the current age of its roof. The reason for this is simple -- because rooftop solar installations are long-lived, the roof needs to be new enough to last for the lifetime of the solar array or old enough to justify being replaced. In this paper we present a data-driven method for determining the age of a roof from historical satellite imagery, which removes one of the last obstacles to a fully automated pipeline for rooftop solar site selection. We estimate that a full solution to this problem would reduce customer acquisition costs for rooftop solar by ∼20%, leading to an additional ∼750 megatons of CO₂ displaced between 2020 and 2050.
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