Standard residential solar panels are typically around 5. However, the exact dimensions depend heavily on the panel's technology, wattage, and the manufacturer's design. But what is the wattage? That is unfortunately not listed at all. 72-cell solar panel. . Roof Load Capacity is Rarely a Limiting Factor: Solar panels add only 3-4 pounds per square foot to roof load, well within the 20+ pound capacity of most residential roofs. The real constraints are typically usable roof space after accounting for required 3-foot setbacks and obstruction clearances. . All versions of the solar module measure 2,172 mm × 1,303 mm × 35 mm and weigh in at 36 kg. 5 feet wide and weigh between 40 to 50 pounds. This size offers the best balance between power output, handling ease, and fitting standard roof dimensions.
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