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Reference.org
Hot spot (photovoltaics)
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<p>In a <a href="/facts/Photovoltaic/5Xefaayl">photovoltaic</a> (PV) <a href="/facts/Solar_panel/gufbEu8n">module</a>, a hot spot describes an over proportional heating of a single <a href="/facts/Solar_cell/3L814UCC">solar cell</a> or a cell part compared to the surrounding cells. It is a typical degradation mode in PV modules. </p>